USAP-DC

{"dp_type": "Dataset", "free_text": "Antarctic Peninsula"}

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Female oocytes were examined using the \"squash technique\" developed by Cuzin-Roudy and Amsler (1991) for assessing ovarian development and sexual maturity. The squash method provides a detailed view of oocyte size, which serves as an indicator of reproductive status and energy allocation during the winter months. Data were collected and processed according to the methods described by Steinke et al. (2024). The dataset includes .csv files containing oocyte diameter and area measurements for individual female krill. These data are valuable for understanding krill reproductive cycles and their ecological responses to environmental variability. Data users should acknowledge the project and grant number, as well as credit Dr. Kim Bernard, Dr. Kirsten Steinke, and Dr. Christian Reiss. 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Antarctic Peninsula; Cryosphere; Macroalgae", "locations": "Antarctic Peninsula; Antarctica", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.692085, "title": "Chemical composition data for Sarcopeltis antarctica ", "uid": "601885", "west": -67.77137}, {"awards": "1744602 Iken, Katrin; 1744550 Amsler, Charles; 1744570 Galloway, Aaron; 1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-67.77137 -64.77195,-67.3795463 -64.77195,-66.9877226 -64.77195,-66.59589890000001 -64.77195,-66.2040752 -64.77195,-65.8122515 -64.77195,-65.4204278 -64.77195,-65.0286041 -64.77195,-64.6367804 -64.77195,-64.2449567 -64.77195,-63.853133 -64.77195,-63.853133 -65.16396350000001,-63.853133 -65.555977,-63.853133 -65.9479905,-63.853133 -66.34000400000001,-63.853133 -66.73201750000001,-63.853133 -67.124031,-63.853133 -67.5160445,-63.853133 -67.90805800000001,-63.853133 -68.3000715,-63.853133 -68.692085,-64.2449567 -68.692085,-64.6367804 -68.692085,-65.0286041 -68.692085,-65.4204278 -68.692085,-65.8122515 -68.692085,-66.2040752 -68.692085,-66.59589890000001 -68.692085,-66.9877226 -68.692085,-67.3795463 -68.692085,-67.77137 -68.692085,-67.77137 -68.3000715,-67.77137 -67.90805800000001,-67.77137 -67.5160445,-67.77137 -67.124031,-67.77137 -66.73201750000001,-67.77137 -66.34000400000001,-67.77137 -65.9479905,-67.77137 -65.555977,-67.77137 -65.16396350000001,-67.77137 -64.77195))"], "date_created": "Tue, 21 Jan 2025 00:00:00 GMT", "description": "This dataset consists of a file with results of chemical analyses of the red macroalga Iridaea sp. along the benthos at 14 sites between the Joubin Islands in the north and the Terra Firma Islands in the south", "east": -63.853133, "geometry": ["POINT(-65.8122515 -66.73201750000001)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Macroalgae", "locations": "Antarctic Peninsula; Antarctica", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.692085, "title": "Chemical composition data for Iridaea ", "uid": "601884", "west": -67.77137}, {"awards": "1744570 Galloway, Aaron; 1744550 Amsler, Charles; 1744584 Klein, Andrew; 1744602 Iken, Katrin", "bounds_geometry": ["POLYGON((-67.77137 -64.77195,-67.3795463 -64.77195,-66.9877226 -64.77195,-66.59589890000001 -64.77195,-66.2040752 -64.77195,-65.8122515 -64.77195,-65.4204278 -64.77195,-65.0286041 -64.77195,-64.6367804 -64.77195,-64.2449567 -64.77195,-63.853133 -64.77195,-63.853133 -65.16396350000001,-63.853133 -65.555977,-63.853133 -65.9479905,-63.853133 -66.34000400000001,-63.853133 -66.73201750000001,-63.853133 -67.124031,-63.853133 -67.5160445,-63.853133 -67.90805800000001,-63.853133 -68.3000715,-63.853133 -68.692085,-64.2449567 -68.692085,-64.6367804 -68.692085,-65.0286041 -68.692085,-65.4204278 -68.692085,-65.8122515 -68.692085,-66.2040752 -68.692085,-66.59589890000001 -68.692085,-66.9877226 -68.692085,-67.3795463 -68.692085,-67.77137 -68.692085,-67.77137 -68.3000715,-67.77137 -67.90805800000001,-67.77137 -67.5160445,-67.77137 -67.124031,-67.77137 -66.73201750000001,-67.77137 -66.34000400000001,-67.77137 -65.9479905,-67.77137 -65.555977,-67.77137 -65.16396350000001,-67.77137 -64.77195))"], "date_created": "Tue, 21 Jan 2025 00:00:00 GMT", "description": "This dataset consists of a file with results of chemical analyses of the brown macroalga Himantothallus grandifolius along the benthos at 14 sites between the Joubin Islands in the north and the Terra Firma Islands in the south.", "east": -63.853133, "geometry": ["POINT(-65.8122515 -66.73201750000001)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Macroalgae", "locations": "Antarctica; Antarctic Peninsula", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.692085, "title": "Chemical composition data for Himantothallus grandifolius", "uid": "601883", "west": -67.77137}, {"awards": "1850988 Teets, Nicholas", "bounds_geometry": ["POINT(-64.0162 -64.7992)"], "date_created": "Sat, 04 Jan 2025 00:00:00 GMT", "description": "This dataset contains survival data for larvae of Belgica antarctica exposed to varying levels of cold, heat, desiccation, and salinity for 24 h. The goal of the experiment was to determine the lethal level for each of these distinct, ecologically relevant stressors.", "east": -64.0162, "geometry": ["POINT(-64.0162 -64.7992)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere", "locations": "Antarctica; Antarctic Peninsula; Antarctica", "north": -64.7992, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Teets, Nicholas", "project_titles": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects", "projects": [{"proj_uid": "p0010203", "repository": "USAP-DC", "title": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.7992, "title": "Multiple stress tolerance in the Antarctic midge", "uid": "601867", "west": -64.0162}, {"awards": "1850988 Teets, Nicholas", "bounds_geometry": ["POLYGON((-64.074764 -64.771683,-64.06381760000001 -64.771683,-64.0528712 -64.771683,-64.0419248 -64.771683,-64.0309784 -64.771683,-64.020032 -64.771683,-64.0090856 -64.771683,-63.9981392 -64.771683,-63.9871928 -64.771683,-63.9762464 -64.771683,-63.9653 -64.771683,-63.9653 -64.7739047,-63.9653 -64.7761264,-63.9653 -64.77834809999999,-63.9653 -64.7805698,-63.9653 -64.7827915,-63.9653 -64.7850132,-63.9653 -64.78723489999999,-63.9653 -64.7894566,-63.9653 -64.7916783,-63.9653 -64.7939,-63.9762464 -64.7939,-63.9871928 -64.7939,-63.9981392 -64.7939,-64.0090856 -64.7939,-64.020032 -64.7939,-64.0309784 -64.7939,-64.0419248 -64.7939,-64.0528712 -64.7939,-64.06381760000001 -64.7939,-64.074764 -64.7939,-64.074764 -64.7916783,-64.074764 -64.7894566,-64.074764 -64.78723489999999,-64.074764 -64.7850132,-64.074764 -64.7827915,-64.074764 -64.7805698,-64.074764 -64.77834809999999,-64.074764 -64.7761264,-64.074764 -64.7739047,-64.074764 -64.771683))"], "date_created": "Fri, 03 Jan 2025 00:00:00 GMT", "description": "For this study, larvae of Belgica antarctica were exposed to varying concentrations of microplastics in lab conditions. After exposing larvae for 10 days, we measured a variety of physiological outcomes, including survival, metabolic rate, and energy store levels (carbohydrates, lipids, and proteins).", "east": -63.9653, "geometry": ["POINT(-64.020032 -64.7827915)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere", "locations": "Antarctic Peninsula; Antarctica", "north": -64.771683, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Teets, Nicholas; Devlin, Jack", "project_titles": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects", "projects": [{"proj_uid": "p0010203", "repository": "USAP-DC", "title": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.7939, "title": "Data from microplastics exposure in Belgica antarctica", "uid": "601866", "west": -64.074764}, {"awards": "1947562 van Gestel, Natasja", "bounds_geometry": ["POLYGON((-64.0898264 -64.7704833,-64.08444765 -64.7704833,-64.07906890000001 -64.7704833,-64.07369015 -64.7704833,-64.0683114 -64.7704833,-64.06293265 -64.7704833,-64.0575539 -64.7704833,-64.05217515 -64.7704833,-64.04679639999999 -64.7704833,-64.04141765 -64.7704833,-64.0360389 -64.7704833,-64.0360389 -64.77082025,-64.0360389 -64.77115719999999,-64.0360389 -64.77149415,-64.0360389 -64.7718311,-64.0360389 -64.77216805,-64.0360389 -64.772505,-64.0360389 -64.77284195,-64.0360389 -64.7731789,-64.0360389 -64.77351585,-64.0360389 -64.7738528,-64.04141765 -64.7738528,-64.04679639999999 -64.7738528,-64.05217515 -64.7738528,-64.0575539 -64.7738528,-64.06293265 -64.7738528,-64.0683114 -64.7738528,-64.07369015 -64.7738528,-64.07906890000001 -64.7738528,-64.08444765 -64.7738528,-64.0898264 -64.7738528,-64.0898264 -64.77351585,-64.0898264 -64.7731789,-64.0898264 -64.77284195,-64.0898264 -64.772505,-64.0898264 -64.77216805,-64.0898264 -64.7718311,-64.0898264 -64.77149415,-64.0898264 -64.77115719999999,-64.0898264 -64.77082025,-64.0898264 -64.7704833))"], "date_created": "Fri, 03 Jan 2025 00:00:00 GMT", "description": "This data set contains soil temperature, soil moisture, and soil conductivity data in the vicinity of Palmer Station. TEROS12 sensors are installed in 40 plots that are distributed along an increasing primary productivity gradient (i.e., with increasing distance from the Marr Ice Piedmont glacier). The sensors are comprised of 5 cm long metal pins that are inserted straight down into the soil and hence, data are collected from the upper 0-5 cm of the soil. There are 4 sites along the gradient (site 1 is closest to the glacier and site 4 is farthest from the glacier), with ten plots at each site. Half of the plots at each site are plots that contain an open-top chamber and the other half of the plots are control (unwarmed) plots. Plot ids will contain \"W\" for warmed plots and \"C\" for control plots. Raw data from the loggers (logged every 20 minutes), as well as an R Markdown file is provided to facilitate reading in and displaying the daily average soil moisture and temperature data at the plot and at the treatment level for each productivity site. Loggers and sensors were installed in December 2022 and were downloaded in November (sites 2-4) and in December (site 1) of 2024. ", "east": -64.0360389, "geometry": ["POINT(-64.06293265 -64.77216805)"], "keywords": "Antarctica; Antarctic Peninsula; Conductivity; Cryosphere; Palmer Station; Soil; Temperature", "locations": "Antarctica; Antarctic Peninsula; Palmer Station", "north": -64.7704833, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "van Gestel, Natasja", "project_titles": "Antarctica as a Model System for Responses of Terrestrial Carbon Balance to Warming", "projects": [{"proj_uid": "p0010251", "repository": "USAP-DC", "title": "Antarctica as a Model System for Responses of Terrestrial Carbon Balance to Warming"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.7738528, "title": "Soil moisture and soil temperature data (0-5 cm) near Palmer Station, Antarctica", "uid": "601877", "west": -64.0898264}, {"awards": "1850988 Teets, Nicholas", "bounds_geometry": ["POLYGON((-64.0844 -64.7651,-64.07249 -64.7651,-64.06058 -64.7651,-64.04867 -64.7651,-64.03676 -64.7651,-64.02485 -64.7651,-64.01294 -64.7651,-64.00103 -64.7651,-63.98912 -64.7651,-63.97721 -64.7651,-63.9653 -64.7651,-63.9653 -64.76798000000001,-63.9653 -64.77086,-63.9653 -64.77374,-63.9653 -64.77662,-63.9653 -64.7795,-63.9653 -64.78238,-63.9653 -64.78526,-63.9653 -64.78814,-63.9653 -64.79101999999999,-63.9653 -64.7939,-63.97721 -64.7939,-63.98912 -64.7939,-64.00103 -64.7939,-64.01294 -64.7939,-64.02485 -64.7939,-64.03676 -64.7939,-64.04867 -64.7939,-64.06058 -64.7939,-64.07249 -64.7939,-64.0844 -64.7939,-64.0844 -64.79101999999999,-64.0844 -64.78814,-64.0844 -64.78526,-64.0844 -64.78238,-64.0844 -64.7795,-64.0844 -64.77662,-64.0844 -64.77374,-64.0844 -64.77086,-64.0844 -64.76798000000001,-64.0844 -64.7651))"], "date_created": "Fri, 03 Jan 2025 00:00:00 GMT", "description": "For this study, larvae were collected every week for the entire summer field season from five sites, four located on Cormorant Island and a fifth site on Humble Island. The dataset contains microhabitat data for each site, as well as the metabolic rate, carbohydrate content, lipid content, and protein content of the larvae collected at those sites for each time point.", "east": -63.9653, "geometry": ["POINT(-64.02485 -64.7795)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Seasonality", "locations": "Antarctica; Antarctic Peninsula", "north": -64.7651, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Teets, Nicholas; Spacht, Drew; Gantz, Josiah D.; Devlin, Jack; McCabe, Eleanor; Lee, Richard; Denlinger, David", "project_titles": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects", "projects": [{"proj_uid": "p0010203", "repository": "USAP-DC", "title": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.7939, "title": "Fine\u2011scale variation in microhabitat conditions influences physiology and metabolism in an Antarctic insect", "uid": "601865", "west": -64.0844}, {"awards": "1850988 Teets, Nicholas", "bounds_geometry": ["POLYGON((-65.6867 -64.7256,-65.52717 -64.7256,-65.36764 -64.7256,-65.20811 -64.7256,-65.04858 -64.7256,-64.88905 -64.7256,-64.72952 -64.7256,-64.56998999999999 -64.7256,-64.41046 -64.7256,-64.25093 -64.7256,-64.0914 -64.7256,-64.0914 -64.86576,-64.0914 -65.00592,-64.0914 -65.14608,-64.0914 -65.28624,-64.0914 -65.4264,-64.0914 -65.56656,-64.0914 -65.70672,-64.0914 -65.84688,-64.0914 -65.98704000000001,-64.0914 -66.1272,-64.25093 -66.1272,-64.41046 -66.1272,-64.56998999999999 -66.1272,-64.72952 -66.1272,-64.88905 -66.1272,-65.04858 -66.1272,-65.20811 -66.1272,-65.36764 -66.1272,-65.52717 -66.1272,-65.6867 -66.1272,-65.6867 -65.98704000000001,-65.6867 -65.84688,-65.6867 -65.70672,-65.6867 -65.56656,-65.6867 -65.4264,-65.6867 -65.28624,-65.6867 -65.14608,-65.6867 -65.00592,-65.6867 -64.86576,-65.6867 -64.7256))"], "date_created": "Mon, 16 Dec 2024 00:00:00 GMT", "description": "In this study, we measured cold and dehydration tolerance of larvae of Belgica antarctica from three distinct geographic locations along the Antarctic Peninsula. Larvae were collected from Cape Rasmussen, Cape Evensen, and Dream Island, after which they were returned to the US for experiments. For cold tolerance, larvae were exposed to -14 or -15\u00b0C for 24 h, and survival was assessed 24 later. For dehydration tolerance, larvae were exposed to 75% RH for 72 h, and survival was checked after 24 h of rehydration. The dataset reports the numbers of live and dead larvae from each island and experimental conditions. Larvae were tested in groups of 10.", "east": -64.0914, "geometry": ["POINT(-64.88905 -65.4264)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere", "locations": "Antarctic Peninsula; Antarctica", "north": -64.7256, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Teets, Nicholas; Kawarasaki, Yuta", "project_titles": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects", "projects": [{"proj_uid": "p0010203", "repository": "USAP-DC", "title": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -66.1272, "title": "Cold and dehydration tolerance of Belgica antarctica from three distinct geographic locations", "uid": "601864", "west": -65.6867}, {"awards": "1744871 Robinson, Rebecca", "bounds_geometry": ["POLYGON((-80 -59,-76.8 -59,-73.6 -59,-70.4 -59,-67.2 -59,-64 -59,-60.8 -59,-57.599999999999994 -59,-54.4 -59,-51.2 -59,-48 -59,-48 -60.6,-48 -62.2,-48 -63.8,-48 -65.4,-48 -67,-48 -68.6,-48 -70.2,-48 -71.8,-48 -73.4,-48 -75,-51.2 -75,-54.4 -75,-57.6 -75,-60.8 -75,-64 -75,-67.2 -75,-70.4 -75,-73.6 -75,-76.8 -75,-80 -75,-80 -73.4,-80 -71.8,-80 -70.2,-80 -68.6,-80 -67,-80 -65.4,-80 -63.8,-80 -62.2,-80 -60.6,-80 -59))"], "date_created": "Tue, 13 Aug 2024 00:00:00 GMT", "description": "This dataset includes measurements of diatom-bound nitrogen isotopic composition (d15Ndb; \u2030 vs air), bulk sedimentary nitrogen isotopic composition (d15Nbulk; \u2030 vs air), and total nitrogen (wt%) from 81 Holocene and late deglacial-aged samples from ODP Site 1098B on the western Antarctic Peninsula.", "east": -48.0, "geometry": ["POINT(-64 -67)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Geochemistry; Sediment", "locations": "Antarctic Peninsula; Antarctica", "north": -59.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Dove, Isabel; Jones, Colin; Kelly, Roger; Robinson, Rebecca", "project_titles": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?", "projects": [{"proj_uid": "p0010234", "repository": "USAP-DC", "title": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -75.0, "title": "Diatom-bound and bulk sedimentary N isotopes from ODP Site 1098, Western Antarctic Peninsula", "uid": "601816", "west": -80.0}, {"awards": "2011285 Santora, Jarrod", "bounds_geometry": ["POLYGON((-63 -60,-62.1 -60,-61.2 -60,-60.3 -60,-59.4 -60,-58.5 -60,-57.6 -60,-56.7 -60,-55.8 -60,-54.9 -60,-54 -60,-54 -60.4,-54 -60.8,-54 -61.2,-54 -61.6,-54 -62,-54 -62.4,-54 -62.8,-54 -63.2,-54 -63.6,-54 -64,-54.9 -64,-55.8 -64,-56.7 -64,-57.6 -64,-58.5 -64,-59.4 -64,-60.3 -64,-61.2 -64,-62.1 -64,-63 -64,-63 -63.6,-63 -63.2,-63 -62.8,-63 -62.4,-63 -62,-63 -61.6,-63 -61.2,-63 -60.8,-63 -60.4,-63 -60))"], "date_created": "Tue, 28 May 2024 00:00:00 GMT", "description": "Winter survey data from the Antarctic Peninsula (including hydrography, zooplankton, and top predators) conducted from the R/V Nathaniel B. Palmer during the austral winter (August-September) of 2012-2016. Survey stations were selected from the U.S. Antarctic Marine Living Resources Program\u0027s standard grid, approximately 15-20 nm apart covering the region 60\u00b0 to 64\u00b0 S and 54\u00b0 to 63\u00b0 W. At each station, hydrography and chlorophyll measurements were collected with CTD profilers and Niskin bottles, and macrozooplankton samples were collected using an Isaacs-Kidd Midwater Trawl. Between stations, observers recorded abundance and behavior of top predators (seabirds and marine mammals).", "east": -54.0, "geometry": ["POINT(-58.5 -62)"], "keywords": "Antarctica; Antarctic Krill; Antarctic Peninsula; Cryosphere; Pack Ice; Polynya; Seabirds; Sea Ice; Winter; Zooplankton", "locations": "Antarctic Peninsula; Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "Santora, Jarrod; Reiss, Christian; Dietrich, Kim; Czapanskiy, Max", "project_titles": "Collaborative Research: Climate, Changing Abundance and Species Interactions of Marine Birds and Mammals at South Georgia in Winter", "projects": [{"proj_uid": "p0010382", "repository": "USAP-DC", "title": "Collaborative Research: Climate, Changing Abundance and Species Interactions of Marine Birds and Mammals at South Georgia in Winter"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.0, "title": "Winter marine communities of the Antarctic Peninsula", "uid": "601795", "west": -63.0}, {"awards": "1848887 McClintock, James; 1744550 Amsler, Charles", "bounds_geometry": ["POLYGON((-64.36985 -64.77195,-64.3181783 -64.77195,-64.2665066 -64.77195,-64.2148349 -64.77195,-64.1631632 -64.77195,-64.1114915 -64.77195,-64.0598198 -64.77195,-64.0081481 -64.77195,-63.9564764 -64.77195,-63.9048047 -64.77195,-63.853133 -64.77195,-63.853133 -64.78477170000001,-63.853133 -64.7975934,-63.853133 -64.8104151,-63.853133 -64.8232368,-63.853133 -64.83605850000001,-63.853133 -64.8488802,-63.853133 -64.8617019,-63.853133 -64.8745236,-63.853133 -64.88734529999999,-63.853133 -64.900167,-63.9048047 -64.900167,-63.9564764 -64.900167,-64.0081481 -64.900167,-64.0598198 -64.900167,-64.1114915 -64.900167,-64.1631632 -64.900167,-64.2148349 -64.900167,-64.2665066 -64.900167,-64.3181783 -64.900167,-64.36985 -64.900167,-64.36985 -64.88734529999999,-64.36985 -64.8745236,-64.36985 -64.8617019,-64.36985 -64.8488802,-64.36985 -64.83605850000001,-64.36985 -64.8232368,-64.36985 -64.8104151,-64.36985 -64.7975934,-64.36985 -64.78477170000001,-64.36985 -64.77195))"], "date_created": "Thu, 16 May 2024 00:00:00 GMT", "description": "File presents summary of image analysis of 956 screen grabs derived from 17 diver video transects of marine communities at 4 sites (A-D) along the Antarctic Peninsula surveyed in 2020 (sites B \u0026 C only) and 2023. The coordinates for these sites are in USAP-DC dataset 601330 (https://doi.org/10.15784/601330 ) and published in Amsler et al. 2003 (https://doi.org/10.1525/elementa.2023.00020).", "east": -63.853133, "geometry": ["POINT(-64.1114915 -64.83605850000001)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Cryosphere; Species Abundance; Video Transects", "locations": "Antarctica; Antarctic Peninsula", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Assemblage-wide effects of ocean acidification and ocean warming on ecologically important macroalgal-associated crustaceans in Antarctica", "projects": [{"proj_uid": "p0010193", "repository": "USAP-DC", "title": "Assemblage-wide effects of ocean acidification and ocean warming on ecologically important macroalgal-associated crustaceans in Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.900167, "title": "2020 and 2023 Underwater video transect community analysis data", "uid": "601787", "west": -64.36985}, {"awards": "2200448 Simms, Alexander", "bounds_geometry": null, "date_created": "Fri, 10 May 2024 00:00:00 GMT", "description": "Radiocarbon dating is arguably the most common method for dating Quaternary deposits. However, accurate age assignments using radiocarbon dating are dependent on knowing the radiocarbon reservoir. For the coastal waters across Antarctica, the radiocarbon reservoirs show significant variation, ranging from 700 to 6,000 years depending on the material dated and the period in question. In this study, we examine the radiocarbon reservoir age for the shallow waters of the Southern Ocean using 23 whale bones salvaged from whaling stations operating on or near the Western Antarctic Peninsula between 1904 and 1916. The species origin of the bones had been identified previously as humpback, fin, or blue whales using sequences of mitochondrial (mt)DNA. We find an average reservoir age of 1050 +/- 135 years for these 23 whale bones, with a \u003c100 year difference in the reservoir age value by species. A comparison between our results and other studies through the Holocene suggest that the Southern Ocean surface water radiocarbon reservoir age has not significantly changed for the last 14,000 years. Combining our new ages with existing data sets provides insight to the stability of the Southern Ocean marine radiocarbon reservoir age, enhancing our understanding of ocean ventilation and upwelling dynamics throughout the Holocene.", "east": null, "geometry": null, "keywords": "Antarctica; C-14; Cryosphere; Radiocarbon Dates; Whale Bone; Whales", "locations": "Antarctica", "north": null, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Divola, Claire; Simms, Alexander; Sremba, Angela; Baker, C. Scott; Friedlaender, Ari; Southon, John", "project_titles": "New constraints on 14C reservoirs around the Antarctic Peninsula and the Southern Ocean based on historically-harvested whale bones", "projects": [{"proj_uid": "p0010457", "repository": "USAP-DC", "title": "New constraints on 14C reservoirs around the Antarctic Peninsula and the Southern Ocean based on historically-harvested whale bones"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Constraining the Radiocarbon Reservoir Age for the Southern Ocean Using Whale Bones Salvaged from Early 20th Century Whaling Stations", "uid": "601784", "west": null}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-97.5 -56,-92.2 -56,-86.9 -56,-81.6 -56,-76.3 -56,-71 -56,-65.7 -56,-60.4 -56,-55.1 -56,-49.800000000000004 -56,-44.5 -56,-44.5 -58,-44.5 -60,-44.5 -62,-44.5 -64,-44.5 -66,-44.5 -68,-44.5 -70,-44.5 -72,-44.5 -74,-44.5 -76,-49.8 -76,-55.1 -76,-60.4 -76,-65.7 -76,-71 -76,-76.3 -76,-81.6 -76,-86.9 -76,-92.19999999999999 -76,-97.5 -76,-97.5 -74,-97.5 -72,-97.5 -70,-97.5 -68,-97.5 -66,-97.5 -64,-97.5 -62,-97.5 -60,-97.5 -58,-97.5 -56))"], "date_created": "Thu, 09 May 2024 00:00:00 GMT", "description": "This dataset contains simulated krill trajectories from the Regional Ocean Modeling System (ROMS) in NETCDF format. Files include latitude, longitude, and depth of particles released along the West Antarctic Peninsula within the ROMS framework with diel vertical migration behavior added to simulate Antarctic krill behavior. Time frames and diel vertical migration behaviors simulated are included in a .csv file. Data currently cover 4 austral summers: 2006, 2007, 2010, and 2011. Five different vertical migration behaviors were simulated, for a total of 20 simulations.", "east": -44.5, "geometry": ["POINT(-71 -66)"], "keywords": "Antarctica; Antarctic Krill; Cryosphere; Model Data; Physical Oceanography; Regional Ocean Modeling System; ROMS; West Antarctic Shelf", "locations": "West Antarctic Shelf; Antarctica", "north": -56.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Simulated krill trajectory data from Regional Ocean Modeling System simulations 2006-2007 \u0026 2010-2011", "uid": "601780", "west": -97.5}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-97.5 -55,-92.05 -55,-86.6 -55,-81.15 -55,-75.7 -55,-70.25 -55,-64.8 -55,-59.35 -55,-53.9 -55,-48.449999999999996 -55,-43 -55,-43 -57.1,-43 -59.2,-43 -61.3,-43 -63.4,-43 -65.5,-43 -67.6,-43 -69.7,-43 -71.8,-43 -73.9,-43 -76,-48.45 -76,-53.9 -76,-59.35 -76,-64.8 -76,-70.25 -76,-75.7 -76,-81.15 -76,-86.6 -76,-92.05000000000001 -76,-97.5 -76,-97.5 -73.9,-97.5 -71.8,-97.5 -69.7,-97.5 -67.6,-97.5 -65.5,-97.5 -63.4,-97.5 -61.3,-97.5 -59.2,-97.5 -57.099999999999994,-97.5 -55))"], "date_created": "Thu, 09 May 2024 00:00:00 GMT", "description": "This dataset includes daily-averaged current speed and velocity data from the Regional Ocean Modeling System. Domain covers the West Antarctic Peninsula. Simulations are from the 2006, 2007, 2010, and 2011 seasons.", "east": -43.0, "geometry": ["POINT(-70.25 -65.5)"], "keywords": "Antarctica; Cryosphere; Model Data; Ocean Currents; Physical Oceanography; Regional Ocean Modeling System; ROMS; West Antarctic Shelf", "locations": "West Antarctic Shelf; Antarctica", "north": -55.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Current velocity and direction data from Regional Ocean Modeling System simulations (2006-2007 \u0026 2010-2011)", "uid": "601779", "west": -97.5}, {"awards": "1744871 Robinson, Rebecca", "bounds_geometry": ["POINT(-64.207 -64.86)"], "date_created": "Wed, 24 Apr 2024 00:00:00 GMT", "description": "This dataset includes measurements of opal (wt %), total organic carbon (wt %), total nitrogen (wt%), bulk nitrogen isotopic composition (d15Nbulk; \u2030 vs air), and diatom-bound nitrogen isotopic composition (d15Ndb; \u2030 vs air) from 36 samples from ODP sediment core 1098B-5H-7 on the western Antarctic Peninsula. The sediments were deposited during a period of deglaciation about 12.5-12.3 ka.", "east": -64.207, "geometry": ["POINT(-64.207 -64.86)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere", "locations": "Antarctic Peninsula; Antarctica", "north": -64.86, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Dove, Isabel", "project_titles": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?", "projects": [{"proj_uid": "p0010234", "repository": "USAP-DC", "title": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.86, "title": "Sediment chemistry of ODP Site 1098", "uid": "601778", "west": -64.207}, {"awards": "1744871 Robinson, Rebecca", "bounds_geometry": ["POINT(-64 -65)"], "date_created": "Wed, 24 Apr 2024 00:00:00 GMT", "description": "This dataset includes diatom assemblage and surface area data from ODP sediment core 1098B-5H-7 on the western Antarctic Peninsula. The sediments are laminated and were deposited during a period of deglaciation about 12.5-12.3 ka. Quantitative diatom assemblage counts and surface area measurements are reported for 12 samples.", "east": -64.0, "geometry": ["POINT(-64 -65)"], "keywords": "Antarctica; Antarctic Peninsula; Cryosphere; Sediment Core Data", "locations": "Antarctic Peninsula; Antarctica", "north": -65.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Dove, Isabel", "project_titles": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?", "projects": [{"proj_uid": "p0010234", "repository": "USAP-DC", "title": "The nitrogen isotopic composition of diatom resting spores in Southern Ocean sediments: A source of bias and/or paleoenvironmental information?"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "ODP Site 1098 deglacial diatom assemblage", "uid": "601777", "west": -64.0}, {"awards": "1841467 MacAyeal, Douglas; 1841607 Banwell, Alison", "bounds_geometry": ["POLYGON((-68.28 -71.1,-68.202 -71.1,-68.124 -71.1,-68.046 -71.1,-67.968 -71.1,-67.89 -71.1,-67.812 -71.1,-67.734 -71.1,-67.656 -71.1,-67.578 -71.1,-67.5 -71.1,-67.5 -71.14999999999999,-67.5 -71.19999999999999,-67.5 -71.25,-67.5 -71.3,-67.5 -71.35,-67.5 -71.39999999999999,-67.5 -71.44999999999999,-67.5 -71.5,-67.5 -71.55,-67.5 -71.6,-67.578 -71.6,-67.656 -71.6,-67.734 -71.6,-67.812 -71.6,-67.89 -71.6,-67.968 -71.6,-68.046 -71.6,-68.124 -71.6,-68.202 -71.6,-68.28 -71.6,-68.28 -71.55,-68.28 -71.5,-68.28 -71.44999999999999,-68.28 -71.39999999999999,-68.28 -71.35,-68.28 -71.3,-68.28 -71.25,-68.28 -71.19999999999999,-68.28 -71.14999999999999,-68.28 -71.1))"], "date_created": "Wed, 20 Mar 2024 00:00:00 GMT", "description": "This dataset contains all of the field data (GNSS, weather station data, timelapse camera images) used in the publication \u0027Banwell et al., 2024\u0027, which documents observations of surface meltwater-induced flexure and fracture at a doline on north George VI Ice Shelf, Antarctic Peninsula. ", "east": -67.5, "geometry": ["POINT(-67.89 -71.35)"], "keywords": "Antarctica; Antarctic Peninsula; AWS; Cryosphere; GNSS; GPS Data; Ice-Shelf Flexure; Ice Shelf Fracture; Ice-Shelf Melt; Timelaps Images", "locations": "Antarctic Peninsula; Antarctica", "north": -71.1, "nsf_funding_programs": "Antarctic Glaciology; Antarctic Glaciology", "persons": "Banwell, Alison; Willis, Ian; Stevens, Laura; Dell, Rebecca; MacAyeal, Douglas", "project_titles": "NSFGEO-NERC: Ice-shelf Instability Caused by Active Surface Meltwater Production, Movement, Ponding and Hydrofracture", "projects": [{"proj_uid": "p0010449", "repository": "USAP-DC", "title": "NSFGEO-NERC: Ice-shelf Instability Caused by Active Surface Meltwater Production, Movement, Ponding and Hydrofracture"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.6, "title": "Dataset for: Banwell et al. 2024, \u0027Observed meltwater-induced flexure and fracture at a doline on George VI Ice Shelf, Antarctica\u0027, Journal of Glaciology.", "uid": "601771", "west": -68.28}, {"awards": "1443585 Polito, Michael; 1443386 Emslie, Steven; 1826712 McMahon, Kelton; 1443424 McMahon, Kelton", "bounds_geometry": ["POLYGON((-180 -61.59,-168.969 -61.59,-157.938 -61.59,-146.90699999999998 -61.59,-135.876 -61.59,-124.845 -61.59,-113.814 -61.59,-102.783 -61.59,-91.752 -61.59,-80.72099999999999 -61.59,-69.69 -61.59,-69.69 -63.195,-69.69 -64.8,-69.69 -66.405,-69.69 -68.01,-69.69 -69.61500000000001,-69.69 -71.22,-69.69 -72.825,-69.69 -74.43,-69.69 -76.035,-69.69 -77.64,-80.721 -77.64,-91.752 -77.64,-102.783 -77.64,-113.814 -77.64,-124.845 -77.64,-135.876 -77.64,-146.90699999999998 -77.64,-157.938 -77.64,-168.969 -77.64,180 -77.64,179.02100000000002 -77.64,178.042 -77.64,177.063 -77.64,176.084 -77.64,175.10500000000002 -77.64,174.126 -77.64,173.147 -77.64,172.168 -77.64,171.18900000000002 -77.64,170.21 -77.64,170.21 -76.035,170.21 -74.43,170.21 -72.825,170.21 -71.22,170.21 -69.61500000000001,170.21 -68.01,170.21 -66.405,170.21 -64.8,170.21 -63.195,170.21 -61.59,171.18900000000002 -61.59,172.168 -61.59,173.147 -61.59,174.126 -61.59,175.10500000000002 -61.59,176.084 -61.59,177.063 -61.59,178.042 -61.59,179.02100000000002 -61.59,-180 -61.59))"], "date_created": "Tue, 09 Jan 2024 00:00:00 GMT", "description": "This data set contains measurements of nitrogen (\u03b415N) stable isotope values of twelve individual amino acids from modern and excavated eggshell of Ad\u00e9lie penguins (Pygoscelis adelidae) from multiple sites around the Antarctic Peninsula and Ross Sea regions of Antarctica. Stable isotope analyses were conducted using a gas chromatograph coupled to a continuous flow stable isotope ratio mass spectrometer. Radiocarbon dates of excavated eggshells were estimated using accelerator Mass Spectrometry (AMS) on bone, feather, and egg membrane tissues from the same ornithogenic layer as the eggshell and were completed at the Rafter Radiocarbon Laboratory and New Zealand (NZA), Beta Analytic, Inc. (Beta). All dates were corrected for the marine carbon reservoir effect and calibrated to calendar years before present (cal years BP) using a \u0394R of 750\u2009\u00b1\u200950 years and the MARINE13 calibration curve in Calib 7.0 (2\u03c3 range). \r\n\r\nThis data set indexes each individually analyzed eggshell sample with site (location), latitude, longitude, tissue used from radiocarbon dating, age of the sample, and nitrogen stable isotope values of individual amino acids. Details of the data set and all relevant methods are provided in Michelson et al. 2023 Limnol. Oceanogr. DOI:10.1002/lno.12446", "east": 170.21, "geometry": ["POINT(-129.74 -69.61500000000001)"], "keywords": "Adelie Penguin; Amino Acids; Antarctica; Antarctic Peninsula; Ross Sea; Stable Isotope Analysis; Trophic Position", "locations": "Ross Sea; Antarctic Peninsula; Antarctica", "north": -61.59, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Michelson, Chantel; Polito, Michael; Wonder, Michael; McCarthy, Matthew; Patterson, William; McMahon, Kelton; Emslie, Steven D.", "project_titles": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators", "projects": [{"proj_uid": "p0010047", "repository": "USAP-DC", "title": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.64, "title": "Amino acid nitrogen isotope values of modern and ancient Ad\u00e9lie penguin eggshells from the Ross Sea and Antarctic Peninsula regions", "uid": "601760", "west": -69.69}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-90 -55,-85.5 -55,-81 -55,-76.5 -55,-72 -55,-67.5 -55,-63 -55,-58.5 -55,-54 -55,-49.5 -55,-45 -55,-45 -57.5,-45 -60,-45 -62.5,-45 -65,-45 -67.5,-45 -70,-45 -72.5,-45 -75,-45 -77.5,-45 -80,-49.5 -80,-54 -80,-58.5 -80,-63 -80,-67.5 -80,-72 -80,-76.5 -80,-81 -80,-85.5 -80,-90 -80,-90 -77.5,-90 -75,-90 -72.5,-90 -70,-90 -67.5,-90 -65,-90 -62.5,-90 -60,-90 -57.5,-90 -55))"], "date_created": "Wed, 13 Sep 2023 00:00:00 GMT", "description": "These data represent simulated buoyant debris released along the West Antarctic Peninsula. Files include latitude, longitude, and depth of particles released along the West Antarctic Peninsula within the Regional Ocean Modeling System (ROMS) framework. Data currently cover 4 austral summers: 2008, 2009, 2018, and 2019. A total of 12 simulations were conducted, simulating debris fields from 4 potential sources: non-point sources, tourism, fishing, and research.", "east": -45.0, "geometry": ["POINT(-67.5 -67.5)"], "keywords": "Antarctica; Modeling; Regional Ocean Modeling System; West Antarctic Shelf", "locations": "West Antarctic Shelf; Antarctica", "north": -55.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -80.0, "title": "Simulated marine debris trajectories along the West Antarctic Peninsula in 2008-2009 and 2018-2019", "uid": "601734", "west": -90.0}, {"awards": "1744584 Klein, Andrew; 1744550 Amsler, Charles; 1744570 Galloway, Aaron; 1744602 Iken, Katrin", "bounds_geometry": ["POLYGON((-67.77137 -64.77195,-67.3795463 -64.77195,-66.9877226 -64.77195,-66.59589890000001 -64.77195,-66.2040752 -64.77195,-65.8122515 -64.77195,-65.4204278 -64.77195,-65.0286041 -64.77195,-64.6367804 -64.77195,-64.2449567 -64.77195,-63.853133 -64.77195,-63.853133 -65.16396350000001,-63.853133 -65.555977,-63.853133 -65.9479905,-63.853133 -66.34000400000001,-63.853133 -66.73201750000001,-63.853133 -67.124031,-63.853133 -67.5160445,-63.853133 -67.90805800000001,-63.853133 -68.3000715,-63.853133 -68.692085,-64.2449567 -68.692085,-64.6367804 -68.692085,-65.0286041 -68.692085,-65.4204278 -68.692085,-65.8122515 -68.692085,-66.2040752 -68.692085,-66.59589890000001 -68.692085,-66.9877226 -68.692085,-67.3795463 -68.692085,-67.77137 -68.692085,-67.77137 -68.3000715,-67.77137 -67.90805800000001,-67.77137 -67.5160445,-67.77137 -67.124031,-67.77137 -66.73201750000001,-67.77137 -66.34000400000001,-67.77137 -65.9479905,-67.77137 -65.555977,-67.77137 -65.16396350000001,-67.77137 -64.77195))"], "date_created": "Wed, 30 Aug 2023 00:00:00 GMT", "description": "This spreadsheet contains by-hand collection data by transect and depth for macroalgal species from 14 sites in the central Antarctic Peninsula. See Amsler et al. 2023 https://doi.org/10.1525/elementa.2023.00020 for a description of the sites and methodology. Data are from the \"Horizontal Transect Components\" only. ", "east": -63.853133, "geometry": ["POINT(-65.8122515 -66.73201750000001)"], "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctica; Antarctic Peninsula", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.692085, "title": "Macroalgal species collected along horizontal transect components", "uid": "601725", "west": -67.77137}, {"awards": "1644256 Costa, Daniel", "bounds_geometry": ["POLYGON((-73.106701 -52.962091,-69.1243089 -52.962091,-65.1419168 -52.962091,-61.159524700000006 -52.962091,-57.1771326 -52.962091,-53.1947405 -52.962091,-49.2123484 -52.962091,-45.2299563 -52.962091,-41.2475642 -52.962091,-37.2651721 -52.962091,-33.28278 -52.962091,-33.28278 -54.530129,-33.28278 -56.098167000000004,-33.28278 -57.666205000000005,-33.28278 -59.234243,-33.28278 -60.802281,-33.28278 -62.370319,-33.28278 -63.938357,-33.28278 -65.506395,-33.28278 -67.074433,-33.28278 -68.642471,-37.2651721 -68.642471,-41.2475642 -68.642471,-45.2299563 -68.642471,-49.2123484 -68.642471,-53.1947405 -68.642471,-57.1771326 -68.642471,-61.159524700000006 -68.642471,-65.1419168 -68.642471,-69.1243089 -68.642471,-73.106701 -68.642471,-73.106701 -67.074433,-73.106701 -65.506395,-73.106701 -63.938356999999996,-73.106701 -62.370319,-73.106701 -60.802281,-73.106701 -59.234243,-73.106701 -57.666205,-73.106701 -56.098167000000004,-73.106701 -54.530129,-73.106701 -52.962091))"], "date_created": "Thu, 11 May 2023 00:00:00 GMT", "description": "The data provided here are the processed dive records obtained via Argos from the MK-10 Wildlife Computers tags. This includes the processed movement data, the diving behavior in terms of time and depth and the metadata for each seal", "east": -33.28278, "geometry": ["POINT(-53.1947405 -60.802281)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Body Mass; Diving Behavior; Leopard Seal; Seals", "locations": "Antarctic Peninsula; Antarctica", "north": -52.962091, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Costa, Daniel", "project_titles": "Collaborative Research: Foraging Ecology and Physiology of the Leopard Seal", "projects": [{"proj_uid": "p0010419", "repository": "USAP-DC", "title": "Collaborative Research: Foraging Ecology and Physiology of the Leopard Seal"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.642471, "title": "Leopard Seal Diving behavior data", "uid": "601690", "west": -73.106701}, {"awards": "1644256 Costa, Daniel", "bounds_geometry": ["POLYGON((-73.106701 -52.962091,-69.1243089 -52.962091,-65.1419168 -52.962091,-61.159524700000006 -52.962091,-57.1771326 -52.962091,-53.1947405 -52.962091,-49.2123484 -52.962091,-45.2299563 -52.962091,-41.2475642 -52.962091,-37.2651721 -52.962091,-33.28278 -52.962091,-33.28278 -54.530129,-33.28278 -56.098167000000004,-33.28278 -57.666205000000005,-33.28278 -59.234243,-33.28278 -60.802281,-33.28278 -62.370319,-33.28278 -63.938357,-33.28278 -65.506395,-33.28278 -67.074433,-33.28278 -68.642471,-37.2651721 -68.642471,-41.2475642 -68.642471,-45.2299563 -68.642471,-49.2123484 -68.642471,-53.1947405 -68.642471,-57.1771326 -68.642471,-61.159524700000006 -68.642471,-65.1419168 -68.642471,-69.1243089 -68.642471,-73.106701 -68.642471,-73.106701 -67.074433,-73.106701 -65.506395,-73.106701 -63.938356999999996,-73.106701 -62.370319,-73.106701 -60.802281,-73.106701 -59.234243,-73.106701 -57.666205,-73.106701 -56.098167000000004,-73.106701 -54.530129,-73.106701 -52.962091))"], "date_created": "Thu, 11 May 2023 00:00:00 GMT", "description": "The data provided here are the processed dive records obtained via Argos from the MK-10 Wildlife Computers tags. This includes the processed movement data, the diving behavior in terms of time and depth and the metadata for each seal", "east": -33.28278, "geometry": ["POINT(-53.1947405 -60.802281)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Body Mass; Diving Behavior; Leopard Seal; Movement Data; Seals", "locations": "Antarctic Peninsula; Antarctica", "north": -52.962091, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Costa, Daniel", "project_titles": "Collaborative Research: Foraging Ecology and Physiology of the Leopard Seal", "projects": [{"proj_uid": "p0010419", "repository": "USAP-DC", "title": "Collaborative Research: Foraging Ecology and Physiology of the Leopard Seal"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.642471, "title": "Leopard Seal movement data", "uid": "601689", "west": -73.106701}, {"awards": "1850988 Teets, Nicholas", "bounds_geometry": ["POLYGON((-64.366767 -62.68104,-63.991703599999994 -62.68104,-63.6166402 -62.68104,-63.2415768 -62.68104,-62.866513399999995 -62.68104,-62.49145 -62.68104,-62.1163866 -62.68104,-61.7413232 -62.68104,-61.366259799999995 -62.68104,-60.9911964 -62.68104,-60.616133 -62.68104,-60.616133 -62.953703700000005,-60.616133 -63.2263674,-60.616133 -63.4990311,-60.616133 -63.771694800000006,-60.616133 -64.0443585,-60.616133 -64.31702220000001,-60.616133 -64.5896859,-60.616133 -64.8623496,-60.616133 -65.13501330000001,-60.616133 -65.407677,-60.9911964 -65.407677,-61.366259799999995 -65.407677,-61.7413232 -65.407677,-62.1163866 -65.407677,-62.49145 -65.407677,-62.866513399999995 -65.407677,-63.2415768 -65.407677,-63.6166402 -65.407677,-63.991703599999994 -65.407677,-64.366767 -65.407677,-64.366767 -65.13501330000001,-64.366767 -64.8623496,-64.366767 -64.5896859,-64.366767 -64.31702220000001,-64.366767 -64.0443585,-64.366767 -63.771694800000006,-64.366767 -63.4990311,-64.366767 -63.2263674,-64.366767 -62.953703700000005,-64.366767 -62.68104))"], "date_created": "Tue, 09 May 2023 00:00:00 GMT", "description": "The file associated with this submission contains information about the collection of Belgica antarctica individuals realized during the 2022/2023 Antarctica summer season. Each entry on the table describes the collection locations, how many sites are within each location, how many individuals were collected in each site, the collection dates, the life stage, and the species.", "east": -60.616133, "geometry": ["POINT(-62.49145 -64.0443585)"], "keywords": "Antarctica; Antarctic Peninsula; Belgica Antarctica; Biota; Sample Location", "locations": "Antarctic Peninsula; Antarctica", "north": -62.68104, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Pavinato, Vitor; Gantz, Joseph; Kawarasaki, Yuta; Devlin, Jack; Teets, Nicholas; Michel, Andrew; Peter, Convey; Sousa Lima, Cleverson", "project_titles": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects", "projects": [{"proj_uid": "p0010203", "repository": "USAP-DC", "title": "NSFGEO-NERC: Mechanisms of Adaptation to Terrestrial Antarctica through Comparative Physiology and Genomics of Antarctic and sub-Antarctic Insects"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.407677, "title": "Information on 2023 collection sites for Belgica antarctica", "uid": "601687", "west": -64.366767}, {"awards": "1543445 Zhang, Jing", "bounds_geometry": ["POLYGON((-70.9 -65,-69.51 -65,-68.12 -65,-66.73 -65,-65.34 -65,-63.95 -65,-62.56 -65,-61.17 -65,-59.78 -65,-58.39 -65,-57 -65,-57 -65.5,-57 -66,-57 -66.5,-57 -67,-57 -67.5,-57 -68,-57 -68.5,-57 -69,-57 -69.5,-57 -70,-58.39 -70,-59.78 -70,-61.17 -70,-62.56 -70,-63.95 -70,-65.34 -70,-66.73 -70,-68.12 -70,-69.51 -70,-70.9 -70,-70.9 -69.5,-70.9 -69,-70.9 -68.5,-70.9 -68,-70.9 -67.5,-70.9 -67,-70.9 -66.5,-70.9 -66,-70.9 -65.5,-70.9 -65))"], "date_created": "Wed, 03 May 2023 00:00:00 GMT", "description": "This dataset includes the 3-km resolution budget terms of surface mass balance (SMB) and surface energy budget (SEB) for the Larsen C Ice Shelf during the melting season of 2017-18. The variables include the SMB budget terms of net surface mass balance, precipitation, runoff, blowing snow erosion, surface sublimation, and blowing snow sublimation, and the SEB budget terms of net surface energy budget, downwelling and upwelling longwave radiation, surface absorbed shortwave radiation, ground heat flux, and sensible / latent heat flux.", "east": -57.0, "geometry": ["POINT(-63.95 -67.5)"], "keywords": "Antarctica; Glaciology; Larsen C Ice Shelf; Model Data; Surface Energy Budget; Surface Mass Balance; WRF Model", "locations": "Antarctica; Larsen C Ice Shelf", "north": -65.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Zhang, Jing; Luo, Liping", "project_titles": "Collaborative Research: Present and Projected Future Forcings on Antarctic Peninsula Glaciers and Ice Shelves using the Weather Forecasting and Research (WRF) Model", "projects": [{"proj_uid": "p0010408", "repository": "USAP-DC", "title": "Collaborative Research: Present and Projected Future Forcings on Antarctic Peninsula Glaciers and Ice Shelves using the Weather Forecasting and Research (WRF) Model"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "3-km Surface Mass and Energy Budget for the Larsen C Ice Shelf", "uid": "601685", "west": -70.9}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-97.5 -56,-92.2 -56,-86.9 -56,-81.6 -56,-76.3 -56,-71 -56,-65.7 -56,-60.4 -56,-55.1 -56,-49.800000000000004 -56,-44.5 -56,-44.5 -58,-44.5 -60,-44.5 -62,-44.5 -64,-44.5 -66,-44.5 -68,-44.5 -70,-44.5 -72,-44.5 -74,-44.5 -76,-49.8 -76,-55.1 -76,-60.4 -76,-65.7 -76,-71 -76,-76.3 -76,-81.6 -76,-86.9 -76,-92.19999999999999 -76,-97.5 -76,-97.5 -74,-97.5 -72,-97.5 -70,-97.5 -68,-97.5 -66,-97.5 -64,-97.5 -62,-97.5 -60,-97.5 -58,-97.5 -56))"], "date_created": "Wed, 26 Apr 2023 00:00:00 GMT", "description": "This dataset contains passive particle trajectories from the Regional Ocean Modeling System (ROMS) in NETCDF format. Files include latitude, longitude, and depth of particles released along the West Antarctic Peninsula within the ROMS framework. Time frames and particle release depths are included in a .csv file. Data currently cover 4 austral summers: 2008, 2009, 2018, and 2019. Five different release depths were used across the 5 model years, for a total of 20 simulations.", "east": -44.5, "geometry": ["POINT(-71 -66)"], "keywords": "Antarctica; Physical Oceanography; Regional Ocean Modeling System; ROMS", "locations": "Antarctica; Antarctica", "north": -56.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Passive particle trajectories from Regional Ocean Modeling System simulations 2008-2009 \u0026 2018-2019", "uid": "601682", "west": -97.5}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-97.5 -55,-92.05 -55,-86.6 -55,-81.15 -55,-75.7 -55,-70.25 -55,-64.8 -55,-59.35 -55,-53.9 -55,-48.449999999999996 -55,-43 -55,-43 -57.1,-43 -59.2,-43 -61.3,-43 -63.4,-43 -65.5,-43 -67.6,-43 -69.7,-43 -71.8,-43 -73.9,-43 -76,-48.45 -76,-53.9 -76,-59.35 -76,-64.8 -76,-70.25 -76,-75.7 -76,-81.15 -76,-86.6 -76,-92.05000000000001 -76,-97.5 -76,-97.5 -73.9,-97.5 -71.8,-97.5 -69.7,-97.5 -67.6,-97.5 -65.5,-97.5 -63.4,-97.5 -61.3,-97.5 -59.2,-97.5 -57.099999999999994,-97.5 -55))"], "date_created": "Fri, 13 Jan 2023 00:00:00 GMT", "description": "This dataset includes daily-averaged current speed and velocity data from the Regional Ocean Modeling System. Domain covers the West Antarctic Peninsula. Simulations are from the 2008, 2009, 2018, and 2019 seasons. ", "east": -43.0, "geometry": ["POINT(-70.25 -65.5)"], "keywords": "Antarctica; Model Data; Ocean Currents; Physical Oceanography; Regional Ocean Modeling System; ROMS; West Antarctic Shelf", "locations": "Antarctica; West Antarctic Shelf", "north": -55.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Current velocity and direction data from Regional Ocean Modeling System simulations (2008-2009 \u0026 2018-2019)", "uid": "601656", "west": -97.5}, {"awards": "2138277 Gallagher, Katherine", "bounds_geometry": ["POLYGON((-97.5 -56,-92.2 -56,-86.9 -56,-81.6 -56,-76.3 -56,-71 -56,-65.7 -56,-60.4 -56,-55.1 -56,-49.800000000000004 -56,-44.5 -56,-44.5 -58,-44.5 -60,-44.5 -62,-44.5 -64,-44.5 -66,-44.5 -68,-44.5 -70,-44.5 -72,-44.5 -74,-44.5 -76,-49.8 -76,-55.1 -76,-60.4 -76,-65.7 -76,-71 -76,-76.3 -76,-81.6 -76,-86.9 -76,-92.19999999999999 -76,-97.5 -76,-97.5 -74,-97.5 -72,-97.5 -70,-97.5 -68,-97.5 -66,-97.5 -64,-97.5 -62,-97.5 -60,-97.5 -58,-97.5 -56))"], "date_created": "Fri, 13 Jan 2023 00:00:00 GMT", "description": "This dataset contains simulated krill trajectories from the Regional Ocean Modeling System (ROMS) in NETCDF format. Files include latitude, longitude, and depth of particles released along the West Antarctic Peninsula within the ROMS framework with diel vertical migration behavior added to simulate Antarctic krill behavior. Time frames and diel vertical migration behaviors simulated are included in a .csv file. Data currently cover 4 austral summers: 2008, 2009, 2018, and 2019. Five different vertical migration behaviors were simulated, for a total of 20 simulations. ", "east": -44.5, "geometry": ["POINT(-71 -66)"], "keywords": "Antarctica; Antarctic Krill; Model Data; Physical Oceanography; Regional Ocean Modeling System; ROMS; West Antarctic Shelf", "locations": "Antarctica; West Antarctic Shelf", "north": -56.0, "nsf_funding_programs": "Post Doc/Travel", "persons": "Gallagher, Katherine", "project_titles": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula", "projects": [{"proj_uid": "p0010349", "repository": "USAP-DC", "title": "OPP-PRF Pygoscelis Penguin Response to Potential Prey Retention along the West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Simulated krill trajectory data from Regional Ocean Modeling System simulations 2008-2009 \u0026 2018-2019", "uid": "601655", "west": -97.5}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-60 -61.8,-60 -62.6,-60 -63.4,-60 -64.2,-60 -65,-60 -65.8,-60 -66.6,-60 -67.4,-60 -68.2,-60 -69,-61 -69,-62 -69,-63 -69,-64 -69,-65 -69,-66 -69,-67 -69,-68 -69,-69 -69,-70 -69,-70 -68.2,-70 -67.4,-70 -66.6,-70 -65.8,-70 -65,-70 -64.2,-70 -63.4,-70 -62.6,-70 -61.8,-70 -61))"], "date_created": "Wed, 11 Jan 2023 00:00:00 GMT", "description": "This dataset a CSV file containing the percentages of water (non-land) pixels within various sized buffers (100, 300, 3,000 and 10,000 m radii) buffers around fifteen sampling sites that were classified as being either Sea Ice or Cloud in the Antarctic Landsat Views collection housed within Esri\u2019s curated Living Atlas of the world which is a collection of ready-to-use global geographic content. The encompass a portion of the Western Antarctic Peninsula. This dataset was developed in support of projects ANT-1744550, -744570, -1744584, and -1744602.", "east": -60.0, "geometry": ["POINT(-65 -65)"], "keywords": "Antarctica; Antarctic Peninsula; GIS; LANDSAT; LMG1904; Remote Sensing; R/v Laurence M. Gould", "locations": "Antarctica; Antarctic Peninsula", "north": -61.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.0, "title": "Landsat Sea Ice/Cloud classifications surrounding project study sites", "uid": "601654", "west": -70.0}, {"awards": "1744602 Iken, Katrin", "bounds_geometry": ["POLYGON((-68 -64.5,-67.5 -64.5,-67 -64.5,-66.5 -64.5,-66 -64.5,-65.5 -64.5,-65 -64.5,-64.5 -64.5,-64 -64.5,-63.5 -64.5,-63 -64.5,-63 -64.95,-63 -65.4,-63 -65.85,-63 -66.3,-63 -66.75,-63 -67.2,-63 -67.65,-63 -68.1,-63 -68.55,-63 -69,-63.5 -69,-64 -69,-64.5 -69,-65 -69,-65.5 -69,-66 -69,-66.5 -69,-67 -69,-67.5 -69,-68 -69,-68 -68.55,-68 -68.1,-68 -67.65,-68 -67.2,-68 -66.75,-68 -66.3,-68 -65.85,-68 -65.4,-68 -64.95,-68 -64.5))"], "date_created": "Tue, 10 Jan 2023 00:00:00 GMT", "description": "The purpose of this dataset was to determine the importance of macroalgal primary producers to the coastal invertebrate food webs along a gradient of sites with increasing mean annual sea ice cover. This dataset contains the carbon and nitrogen stable isotope values, in addition to carbon and nitrogen content, of various coastal primary producers and invertebrate consumers from 15 stations along the Antarctic Peninsula from 64 to 69 degree latitude south collected in 2019. Primary producers included multiple species of macroalgae, particulate organic matter (POM) as a proxy of phytoplankton production, and benthic diatoms (where they occurred). Consumers included various benthic invertebrates of different feeding types, from suspension feeders (like sponges and ascidians) to predators/omnivores (like sea stars). ", "east": -63.0, "geometry": ["POINT(-65.5 -66.75)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Carbon; Carbon Isotopes; LMG1904; Nitrogen Isotopes; Oceans", "locations": "Antarctica; Antarctic Peninsula", "north": -64.5, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Iken, Katrin", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.0, "title": "Carbon and nitrogen isotope data along a gradient at the Antarctic Peninsula", "uid": "601653", "west": -68.0}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-78 -60,-74.6 -60,-71.2 -60,-67.8 -60,-64.4 -60,-61 -60,-57.6 -60,-54.2 -60,-50.8 -60,-47.400000000000006 -60,-44 -60,-44 -61.3,-44 -62.6,-44 -63.9,-44 -65.2,-44 -66.5,-44 -67.8,-44 -69.1,-44 -70.4,-44 -71.7,-44 -73,-47.4 -73,-50.8 -73,-54.2 -73,-57.6 -73,-61 -73,-64.4 -73,-67.8 -73,-71.2 -73,-74.6 -73,-78 -73,-78 -71.7,-78 -70.4,-78 -69.1,-78 -67.8,-78 -66.5,-78 -65.2,-78 -63.9,-78 -62.6,-78 -61.3,-78 -60))"], "date_created": "Fri, 06 Jan 2023 00:00:00 GMT", "description": "This dataset comprises a series of geotiff grids of modelled solar radiation (Wh m-2 day-1) for a portion of the Western Antarctic Peninsula. The grids were generated using the r.sun module in Grass GIS. In addition to the a geotiff grid representing the average daily global horizontal irradiance for an entire year, the dataset also includes geotiffs containing daily values of direct beam irradiance, diffuse irradiance, ground reflected irradiance, and global (total) irradiance (all in Wh m-2 day-1) as well as insolation time (hours). This dataset was created in support of projects ANT-1744550, -1744570, -1744584, and -1744602.", "east": -44.0, "geometry": ["POINT(-61 -66.5)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; GIS; GIS Data; LMG1904; R/v Laurence M. Gould; Solar Radiation", "locations": "Antarctica; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -73.0, "title": "Modelled Solar Irradiance for Western Antarctic Pennisula", "uid": "601651", "west": -78.0}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-78 -60,-74.6 -60,-71.2 -60,-67.8 -60,-64.4 -60,-61 -60,-57.6 -60,-54.2 -60,-50.8 -60,-47.400000000000006 -60,-44 -60,-44 -61.3,-44 -62.6,-44 -63.9,-44 -65.2,-44 -66.5,-44 -67.8,-44 -69.1,-44 -70.4,-44 -71.7,-44 -73,-47.4 -73,-50.8 -73,-54.2 -73,-57.6 -73,-61 -73,-64.4 -73,-67.8 -73,-71.2 -73,-74.6 -73,-78 -73,-78 -71.7,-78 -70.4,-78 -69.1,-78 -67.8,-78 -66.5,-78 -65.2,-78 -63.9,-78 -62.6,-78 -61.3,-78 -60))"], "date_created": "Thu, 05 Jan 2023 00:00:00 GMT", "description": "This dataset comprises a series of geotiff files containing mean annual or summer (October-February) gridded sea ice concentrations for five-year periods developed from available Sea Ice Concentration Datasets (AMSR2, the Sea Ice Index, and National Ice Center Charts). The grids encompass a portion of the Western Antarctic Peninsula. This dataset was developed in support of projects ANT-1744550, -1744570, -1744584, and -1744602.", "east": -44.0, "geometry": ["POINT(-61 -66.5)"], "keywords": "Antarctica; Antarctic Peninsula; LMG1904; National Ice Center Charts; Sea Ice Concentration", "locations": "Antarctica; Antarctica; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -73.0, "title": "Five year mean annual and summer sea ice concentration grids for the Western Antarctic Peninsula from AMSR2, National Ice Center Charts and the Sea Ice Index ", "uid": "601649", "west": -78.0}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-78 -60,-74.6 -60,-71.2 -60,-67.8 -60,-64.4 -60,-61 -60,-57.6 -60,-54.2 -60,-50.8 -60,-47.400000000000006 -60,-44 -60,-44 -61.3,-44 -62.6,-44 -63.9,-44 -65.2,-44 -66.5,-44 -67.8,-44 -69.1,-44 -70.4,-44 -71.7,-44 -73,-47.4 -73,-50.8 -73,-54.2 -73,-57.6 -73,-61 -73,-64.4 -73,-67.8 -73,-71.2 -73,-74.6 -73,-78 -73,-78 -71.7,-78 -70.4,-78 -69.1,-78 -67.8,-78 -66.5,-78 -65.2,-78 -63.9,-78 -62.6,-78 -61.3,-78 -60))"], "date_created": "Thu, 29 Dec 2022 00:00:00 GMT", "description": "This dataset contains gridded sea ice concentrations developed from vector GIS National Ice Center (NIC) Charts for a portion of the western Antarctic Peninsula. This dataset was developed in support of projects ANT-1744550, -1744570, -1744584, and -1744602. It contains geotif files containing the minimum, maximum, and midpoint (average) sea ice concentrations in tenths calculated from NIC vector GIS layers for the 2008-2019 time period.", "east": -44.0, "geometry": ["POINT(-61 -66.5)"], "keywords": "Antarctica; Antarctic Peninsula; LMG1904; National Ice Center Charts; R/v Laurence M. Gould; Sea Ice Concentration", "locations": "Antarctica; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -73.0, "title": "Gridded sea ice concentrations from National Ice Center (NIC) Charts 2014-2019 for Western Antarctic Peninsula ", "uid": "601643", "west": -78.0}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-60 -61.8,-60 -62.6,-60 -63.4,-60 -64.2,-60 -65,-60 -65.8,-60 -66.6,-60 -67.4,-60 -68.2,-60 -69,-61 -69,-62 -69,-63 -69,-64 -69,-65 -69,-66 -69,-67 -69,-68 -69,-69 -69,-70 -69,-70 -68.2,-70 -67.4,-70 -66.6,-70 -65.8,-70 -65,-70 -64.2,-70 -63.4,-70 -62.6,-70 -61.8,-70 -61))"], "date_created": "Thu, 29 Dec 2022 00:00:00 GMT", "description": "This cvs dataset contains time series of sea ice concentrations from four remote sensing derived products \u2013 the Sea Ice Index (Sea Ice Index), AMSR2 and AMSR-E, and National Ice Center NIC Charts. The dataset consists of the daily (or weekly in the case of NIC) timeseries for the available period of record beginning in 1979 for the Sea Ice Index and extending until April 1, 2019. The sea ice concentrations were extracted from the nearest corresponding pixels from the fifteen study sites associated with visited by projects ANT-1744550, -1744570, -1744584, and -1744602 during ARSV Laurence M. Gould cruise LMG 19-04 in April and May 2019. In addition to the original time series, five-year annual means starting on April 1st are computed for the Sea Ice Index, AMSR2 and NIC datasets all of which covered the 2014-2019 period. These five-year means include both annual and summer (October-February).", "east": -60.0, "geometry": ["POINT(-65 -65)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; LMG1904; R/v Laurence M. Gould; Sea Ice Concentration", "locations": "Antarctica; Antarctic Peninsula; Antarctica", "north": -61.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.0, "title": "Sea Ice Concentration Timeseries for study sites", "uid": "601642", "west": -70.0}, {"awards": "1744584 Klein, Andrew", "bounds_geometry": ["POLYGON((-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-60 -61.8,-60 -62.6,-60 -63.4,-60 -64.2,-60 -65,-60 -65.8,-60 -66.6,-60 -67.4,-60 -68.2,-60 -69,-61 -69,-62 -69,-63 -69,-64 -69,-65 -69,-66 -69,-67 -69,-68 -69,-69 -69,-70 -69,-70 -68.2,-70 -67.4,-70 -66.6,-70 -65.8,-70 -65,-70 -64.2,-70 -63.4,-70 -62.6,-70 -61.8,-70 -61))"], "date_created": "Thu, 29 Dec 2022 00:00:00 GMT", "description": "This csv dataset includes the fetch distances for the 15 study sites visited by projects ANT-1744550, -1744570, -1744584, and -1744602 during ARSV Laurence M. Gould cruise LMG 19-04 in April and May 2019. The fetch distances were computed for each of the following eight cardinal directions (0\u00b0,45\u00b0,90\u00b0,135\u00b0,180\u00b0,225\u00b0,270\u00b0,315\u00b0). The fetches are all reported in meters (m). Fetch was determined by computing the distance along each of the eight directions to the nearest shoreline based on a 100 m resolution land/water grid. The grid was constructed using a vector-to-raster conversion of the Scientific Council of Antarctic Research (SCAR) Antarctic Digital Database\u2019s High resolution vector polylines of the Antarctic coastline. The fetch computations utilized an ArcGIS toolbox based on code by Finlayson (2006) that computes fetch using the recommended procedures from the US Army Corp of Engineers Shore Protection Manual (USACE, 1984).\r\nFinlayson, D.P. 2006. The geomorphology of Puget Sound beaches. Ph.D. dissertation. University of Washington, Seattle. 216 p.\r\nGerrish, L., Fretwell, P., \u0026 Cooper, P. (2021). High resolution vector polylines of the Antarctic coastline (7.4) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research \u0026 Innovation. https://doi.org/10.5285/e46be5bc-ef8e-4fd5-967b-92863fbe2835\u0027.\r\nUSACE, 1984. Shore Protection Manual, Coastal Engineering Research Center, Fort Belvoir, Virginia.\r\n", "east": -60.0, "geometry": ["POINT(-65 -65)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Fetch; LMG1904; R/v Laurence M. Gould", "locations": "Antarctica; Antarctic Peninsula", "north": -61.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Klein, Andrew", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.0, "title": "Computed fetch for project study sites", "uid": "601639", "west": -70.0}, {"awards": "1644197 Simms, Alexander", "bounds_geometry": null, "date_created": "Mon, 19 Dec 2022 00:00:00 GMT", "description": "This dataset provides the raw and processed ground-penetrating radar (GPR) data collected on Joinville Island in the Antarctic Peninsula. ", "east": null, "geometry": null, "keywords": "Antarctica; Joinville Island", "locations": "Antarctica; Joinville Island", "north": null, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Simms, Alexander", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Ground Penetrating Radar Profiles from Beaches on Joinville Island, Antarctic Peninsula", "uid": "601632", "west": null}, {"awards": "1644197 Simms, Alexander", "bounds_geometry": null, "date_created": "Mon, 19 Dec 2022 00:00:00 GMT", "description": "This dataset consists of the location, elevation, and age of samples obtained from Joinville Island along the Antarctic Peninsula", "east": null, "geometry": null, "keywords": "Antarctica; Joinville Island; Raised Beaches; Sea Level", "locations": "Antarctica; Joinville Island", "north": null, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Simms, Alexander", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Radiocarbon Ages from Beaches on Joinville Island, Antarctic Peninsula", "uid": "601634", "west": null}, {"awards": "1644197 Simms, Alexander", "bounds_geometry": null, "date_created": "Mon, 19 Dec 2022 00:00:00 GMT", "description": "This dataset includes ground-penetrating radar (GPR) data collected on Livingston Island in the Antarctic Peninsula.", "east": null, "geometry": null, "keywords": "Antarctica; Joinville Island", "locations": "Antarctica; Joinville Island", "north": null, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Simms, Alexander", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Ground-Penetrating Radar data from Livingston Island in the Antarctic Peninsula", "uid": "601633", "west": null}, {"awards": "1341339 Baker, Bill; 1341333 McClintock, James", "bounds_geometry": ["POLYGON((-64.36222 -64.72805,-64.325105 -64.72805,-64.28799 -64.72805,-64.250875 -64.72805,-64.21376 -64.72805,-64.176645 -64.72805,-64.13953 -64.72805,-64.102415 -64.72805,-64.0653 -64.72805,-64.028185 -64.72805,-63.99107 -64.72805,-63.99107 -64.74691299999999,-63.99107 -64.765776,-63.99107 -64.784639,-63.99107 -64.803502,-63.99107 -64.82236499999999,-63.99107 -64.841228,-63.99107 -64.860091,-63.99107 -64.878954,-63.99107 -64.897817,-63.99107 -64.91668,-64.028185 -64.91668,-64.0653 -64.91668,-64.102415 -64.91668,-64.13953 -64.91668,-64.176645 -64.91668,-64.21376 -64.91668,-64.250875 -64.91668,-64.28799 -64.91668,-64.325105 -64.91668,-64.36222 -64.91668,-64.36222 -64.897817,-64.36222 -64.878954,-64.36222 -64.860091,-64.36222 -64.841228,-64.36222 -64.82236499999999,-64.36222 -64.803502,-64.36222 -64.784639,-64.36222 -64.765776,-64.36222 -64.74691299999999,-64.36222 -64.72805))"], "date_created": "Tue, 22 Nov 2022 00:00:00 GMT", "description": "Data and R code from Sabrina Heiser\u0027s study of the reproductive system of Plocamium sp. in the Palmer Station region.", "east": -63.99107, "geometry": ["POINT(-64.176645 -64.82236499999999)"], "keywords": "Antarctica; 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", "east": -63.853133, "geometry": ["POINT(-65.8122515 -66.73201750000001)"], "keywords": "Antarctica; Antarctic Peninsula; Benthic Communities; Biota; Macroalgae; Macroinvertebrates; Oceans; Video Transects", "locations": "Antarctic Peninsula; Antarctica; Antarctic Peninsula; Antarctica", "north": -64.77195, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.692085, "title": "Underwater video transect community analysis data", "uid": "601619", "west": -67.77137}, {"awards": "1933764 Enderlin, Ellyn", "bounds_geometry": ["POLYGON((-63.1 -65.2,-62.99 -65.2,-62.88 -65.2,-62.77 -65.2,-62.660000000000004 -65.2,-62.55 -65.2,-62.44 -65.2,-62.33 -65.2,-62.22 -65.2,-62.11 -65.2,-62 -65.2,-62 -65.24000000000001,-62 -65.28,-62 -65.32,-62 -65.36,-62 -65.4,-62 -65.44,-62 -65.47999999999999,-62 -65.52,-62 -65.56,-62 -65.6,-62.11 -65.6,-62.22 -65.6,-62.33 -65.6,-62.44 -65.6,-62.55 -65.6,-62.660000000000004 -65.6,-62.77 -65.6,-62.88 -65.6,-62.99 -65.6,-63.1 -65.6,-63.1 -65.56,-63.1 -65.52,-63.1 -65.47999999999999,-63.1 -65.44,-63.1 -65.4,-63.1 -65.36,-63.1 -65.32,-63.1 -65.28,-63.1 -65.24000000000001,-63.1 -65.2))"], "date_created": "Mon, 24 Oct 2022 00:00:00 GMT", "description": "This dataset contains observed and modeled conditions along the Crane Glacier centerline for ~1994\u20142100. 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The sample locations and water depths are recorded in this dataset. These samples were used to collect data on organic matter (total organic carbon, total nitrogen, delta 13C (organic), delta 15N, and C to N ratios). Nutrient data (nitrate, nitrite, sulfate, and ammonia) and grain size analysis were collected on a subsample set (10). ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Grain Size; Grain Size Analysis; Marine Geoscience; Marine Sediments; Organic Matter Geochemistry; Sediment Core Data; Shelf Sediments; Weddell Sea", "locations": "Weddell Sea; Antarctic Peninsula; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Learman, Deric", "project_titles": "RAPID: Meta-genomic and Transcriptomic Investigation of Complex Organic Matter Degradation in Antarctic Benthic Sediments", "projects": [{"proj_uid": "p0010235", "repository": "USAP-DC", "title": "RAPID: Meta-genomic and Transcriptomic Investigation of Complex Organic Matter Degradation in Antarctic Benthic Sediments"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Physical and geochemical data from shelf sediments near the Antartic Pennisula", "uid": "601607", "west": null}, {"awards": "0003956 Burns, Jennifer; 0523338 Burns, Jennifer", "bounds_geometry": ["POLYGON((-70 -65,-69.5 -65,-69 -65,-68.5 -65,-68 -65,-67.5 -65,-67 -65,-66.5 -65,-66 -65,-65.5 -65,-65 -65,-65 -65.5,-65 -66,-65 -66.5,-65 -67,-65 -67.5,-65 -68,-65 -68.5,-65 -69,-65 -69.5,-65 -70,-65.5 -70,-66 -70,-66.5 -70,-67 -70,-67.5 -70,-68 -70,-68.5 -70,-69 -70,-69.5 -70,-70 -70,-70 -69.5,-70 -69,-70 -68.5,-70 -68,-70 -67.5,-70 -67,-70 -66.5,-70 -66,-70 -65.5,-70 -65))"], "date_created": "Fri, 24 Jun 2022 00:00:00 GMT", "description": "Total body oxygen stores were determined for adult crabeater seals in the Marguerite Bay region of the Western Antarctic Peninsula. This study was conducted in 2001 and 2002 as part of the Southern Ocean GLOBEC collaboration.", "east": -65.0, "geometry": ["POINT(-67.5 -67.5)"], "keywords": "Antarctica; Crabeater Seal; GLOBEC; Hemoglobin; LMG0104; LMG0106; LMG0204; LMG0205; Marguerite Bay; Myoglobin; Oxygen Stores; Seals", "locations": "Marguerite Bay; Antarctica", "north": -65.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Burns, Jennifer", "project_titles": "Foraging Ecology of Crabeater Seals (Lobodon Carcinophagus)", "projects": [{"proj_uid": "p0010345", "repository": "USAP-DC", "title": "Foraging Ecology of Crabeater Seals (Lobodon Carcinophagus)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "Crabeater seal oxygen stores", "uid": "601583", "west": -70.0}, {"awards": "1643877 Friedlaender, Ari", "bounds_geometry": ["POLYGON((-65 -62,-64.5 -62,-64 -62,-63.5 -62,-63 -62,-62.5 -62,-62 -62,-61.5 -62,-61 -62,-60.5 -62,-60 -62,-60 -62.4,-60 -62.8,-60 -63.2,-60 -63.6,-60 -64,-60 -64.4,-60 -64.8,-60 -65.2,-60 -65.6,-60 -66,-60.5 -66,-61 -66,-61.5 -66,-62 -66,-62.5 -66,-63 -66,-63.5 -66,-64 -66,-64.5 -66,-65 -66,-65 -65.6,-65 -65.2,-65 -64.8,-65 -64.4,-65 -64,-65 -63.6,-65 -63.2,-65 -62.8,-65 -62.4,-65 -62))"], "date_created": "Wed, 23 Mar 2022 00:00:00 GMT", "description": "This dataset contains motion-sensing and video recording data from CATS biologging tags deployed on Antarctic minke whales in 2018 and 2019. The data are used to determine underwater behavior and link foraging rates to environmental covariates to better understand the ecological role of this poorly known krill predator. Specifically, we are interested in how the presence and amount of ice affects the behavior of this species in the nearshore waters on the western side of the Antarctic Peninsula, a region experiencing rapid climate change.", "east": -60.0, "geometry": ["POINT(-62.5 -64)"], "keywords": "Antarctica; Antarctic Peninsula; Biologging; Foraging; Ice; Minke Whales", "locations": "Antarctica; Antarctic Peninsula", "north": -62.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Friedlaender, Ari", "project_titles": "Foraging Behavior and Ecological Role of the Least Studied Antarctic Krill Predator, the Antarctic Minke Whale (Balaenoptera Bonaerensis)", "projects": [{"proj_uid": "p0010207", "repository": "USAP-DC", "title": "Foraging Behavior and Ecological Role of the Least Studied Antarctic Krill Predator, the Antarctic Minke Whale (Balaenoptera Bonaerensis)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -66.0, "title": "Motion-sensing biologging data from Antarctic minke whales, West Antarctic Peninsula", "uid": "601542", "west": -65.0}, {"awards": "1341333 McClintock, James; 1341339 Baker, Bill", "bounds_geometry": null, "date_created": "Tue, 15 Mar 2022 00:00:00 GMT", "description": "This file represents the raw gastropod count data used for the analyses in Amsler et al. 2022, Antarctic Science. See the methods there in the main text and supplementary material for specifics on collections and exact coordinates of the collection sites. ", "east": null, "geometry": null, "keywords": "Antarctica; Benthos; Palmer Station", "locations": "Antarctica; Palmer Station", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Raw gastropod collection data from Amsler et al. 2022 Antarctic Science", "uid": "601533", "west": null}, {"awards": "1947040 Postlethwait, John", "bounds_geometry": ["POLYGON((-63.1 -63.9,-63.02 -63.9,-62.94 -63.9,-62.86 -63.9,-62.78 -63.9,-62.7 -63.9,-62.62 -63.9,-62.54 -63.9,-62.46 -63.9,-62.38 -63.9,-62.3 -63.9,-62.3 -64.01,-62.3 -64.12,-62.3 -64.23,-62.3 -64.34,-62.3 -64.45,-62.3 -64.56,-62.3 -64.67,-62.3 -64.78,-62.3 -64.89,-62.3 -65,-62.38 -65,-62.46 -65,-62.54 -65,-62.62 -65,-62.7 -65,-62.78 -65,-62.86 -65,-62.94 -65,-63.02 -65,-63.1 -65,-63.1 -64.89,-63.1 -64.78,-63.1 -64.67,-63.1 -64.56,-63.1 -64.45,-63.1 -64.34,-63.1 -64.23,-63.1 -64.12,-63.1 -64.01,-63.1 -63.9))"], "date_created": "Tue, 15 Mar 2022 00:00:00 GMT", "description": "In situ hybridization of Notoxcellia coronata and host fish Trematomus scotti 18S SSU rRNA and of Notoxcellia picta and host fish Nototheniops larseni in alternate sections of tumor xenomas.", "east": -62.3, "geometry": ["POINT(-62.7 -64.45)"], "keywords": "Alveolata; 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Antarctica; Antarctic Peninsula; Notoxcellia Coronata; Notoxcellia Picta; Perkinsozoa; Xcellidae", "locations": "Antarctica; Antarctic Peninsula", "north": -63.9, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Desvignes, Thomas; Fontenele, Rafaela S. ; Kraberger, Simona ; Varsani, Arvind; Postlethwait, John", "project_titles": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish ", "projects": [{"proj_uid": "p0010221", "repository": "USAP-DC", "title": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish "}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Metagenomic analysis of apparently healthy and tumor samples using Kaiju software ", "uid": "601537", "west": -63.1}, {"awards": "1947040 Postlethwait, John", "bounds_geometry": ["POLYGON((-63.1 -63.9,-63.02 -63.9,-62.94 -63.9,-62.86 -63.9,-62.78 -63.9,-62.7 -63.9,-62.62 -63.9,-62.54 -63.9,-62.46 -63.9,-62.38 -63.9,-62.3 -63.9,-62.3 -64.01,-62.3 -64.12,-62.3 -64.23,-62.3 -64.34,-62.3 -64.45,-62.3 -64.56,-62.3 -64.67,-62.3 -64.78,-62.3 -64.89,-62.3 -65,-62.38 -65,-62.46 -65,-62.54 -65,-62.62 -65,-62.7 -65,-62.78 -65,-62.86 -65,-62.94 -65,-63.02 -65,-63.1 -65,-63.1 -64.89,-63.1 -64.78,-63.1 -64.67,-63.1 -64.56,-63.1 -64.45,-63.1 -64.34,-63.1 -64.23,-63.1 -64.12,-63.1 -64.01,-63.1 -63.9))"], "date_created": "Mon, 14 Mar 2022 00:00:00 GMT", "description": "Histopathology images of X-cell xenomas in Trematomus scotti and in Nototheniops larseni.", "east": -62.3, "geometry": ["POINT(-62.7 -64.45)"], "keywords": "Alveolata; 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De calculation; dose rate calculation, fading, signal measurement", "east": -55.0, "geometry": ["POINT(-60 -63)"], "keywords": "Antarctica; Geochronology; Joinville Island; Livingston Island; OSL dating; Raised Beaches", "locations": "Joinville Island; Antarctica; Livingston Island", "north": -61.0, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Earth Sciences", "persons": "DeWitt, Regina", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Joinville and Livingston Islands - rock and sediment OSL ages", "uid": "601534", "west": -65.0}, {"awards": "1643868 DeWitt, Regina; 1644197 Simms, Alexander", "bounds_geometry": ["POLYGON((-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-59 -61,-58 -61,-57 -61,-56 -61,-55 -61,-55 -61.4,-55 -61.8,-55 -62.2,-55 -62.6,-55 -63,-55 -63.4,-55 -63.8,-55 -64.2,-55 -64.6,-55 -65,-56 -65,-57 -65,-58 -65,-59 -65,-60 -65,-61 -65,-62 -65,-63 -65,-64 -65,-65 -65,-65 -64.6,-65 -64.2,-65 -63.8,-65 -63.4,-65 -63,-65 -62.6,-65 -62.2,-65 -61.8,-65 -61.4,-65 -61))"], "date_created": "Fri, 11 Mar 2022 00:00:00 GMT", "description": "raw OSL data for rock and sediment samples collected on Joinville and Livingston Islands", "east": -55.0, "geometry": ["POINT(-60 -63)"], "keywords": "Antarctica; Geochronology; Joinville Island; Livingston Island; OSL dating; Raised Beaches", "locations": "Joinville Island; Antarctica; Livingston Island", "north": -61.0, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Earth Sciences", "persons": "DeWitt, Regina", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "OSL data - Joinville and Livingston Islands - Raw data", "uid": "601532", "west": -65.0}, {"awards": "1644197 Simms, Alexander; 1643868 DeWitt, Regina", "bounds_geometry": ["POLYGON((-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-60 -61,-59 -61,-58 -61,-57 -61,-56 -61,-55 -61,-55 -61.4,-55 -61.8,-55 -62.2,-55 -62.6,-55 -63,-55 -63.4,-55 -63.8,-55 -64.2,-55 -64.6,-55 -65,-56 -65,-57 -65,-58 -65,-59 -65,-60 -65,-61 -65,-62 -65,-63 -65,-64 -65,-65 -65,-65 -64.6,-65 -64.2,-65 -63.8,-65 -63.4,-65 -63,-65 -62.6,-65 -62.2,-65 -61.8,-65 -61.4,-65 -61))"], "date_created": "Fri, 11 Mar 2022 00:00:00 GMT", "description": "sediment and rock samples were collected on Joinville and Livingston Islands for OSL dating; feldspar separates were prepared; data set includes Electron microprobe analysis of selected feldspar extracts; includes bmp and tif with elemental maps plus elemental concentrations and Ca:Na:K ratios for feldspar analysis", "east": -55.0, "geometry": ["POINT(-60 -63)"], "keywords": "Antarctica; Geochronology; Joinville Island; Livingston Island; OSL dating; Raised Beaches", "locations": "Livingston Island; Antarctica; Joinville Island", "north": -61.0, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Earth Sciences", "persons": "DeWitt, Regina", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Electron Microprobe Analysis of feldspar separates from rock and sediment OSL samples from Joinville and Livingston Island Beaches", "uid": "601531", "west": -65.0}, {"awards": "1643494 Saal, Alberto", "bounds_geometry": ["POLYGON((-68.074 -57.345,-66.6033 -57.345,-65.1326 -57.345,-63.6619 -57.345,-62.1912 -57.345,-60.7205 -57.345,-59.2498 -57.345,-57.7791 -57.345,-56.3084 -57.345,-54.8377 -57.345,-53.367 -57.345,-53.367 -58.1252,-53.367 -58.9054,-53.367 -59.6856,-53.367 -60.4658,-53.367 -61.246,-53.367 -62.0262,-53.367 -62.8064,-53.367 -63.5866,-53.367 -64.3668,-53.367 -65.147,-54.8377 -65.147,-56.3084 -65.147,-57.7791 -65.147,-59.2498 -65.147,-60.7205 -65.147,-62.1912 -65.147,-63.6619 -65.147,-65.1326 -65.147,-66.6033 -65.147,-68.074 -65.147,-68.074 -64.3668,-68.074 -63.5866,-68.074 -62.8064,-68.074 -62.0262,-68.074 -61.246,-68.074 -60.4658,-68.074 -59.6856,-68.074 -58.9054,-68.074 -58.1252,-68.074 -57.345))"], "date_created": "Mon, 07 Feb 2022 00:00:00 GMT", "description": "", "east": -53.367, "geometry": ["POINT(-60.7205 -61.246)"], "keywords": "Antarctica; Antarctic Peninsula; Chemical Composition; Chemistry:rock; Chemistry:Rock; Geochemistry; Isotope Data; Trace Elements", "locations": "Antarctica; Antarctic Peninsula", "north": -57.345, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Saal, Alberto", "project_titles": "Magmatic Volatiles, Unraveling the Reservoirs and Processes of the Volcanism in the Antarctic Peninsula", "projects": [{"proj_uid": "p0010196", "repository": "USAP-DC", "title": "Magmatic Volatiles, Unraveling the Reservoirs and Processes of the Volcanism in the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.147, "title": "Major, trace elements contents and radiogenic isotopes of erupted lavas Antarctic Peninsula and Phoenix Ridge", "uid": "601519", "west": -68.074}, {"awards": "1947040 Postlethwait, John", "bounds_geometry": ["POLYGON((-63.1 -63.9,-63.02 -63.9,-62.94 -63.9,-62.86 -63.9,-62.78 -63.9,-62.7 -63.9,-62.62 -63.9,-62.54 -63.9,-62.46 -63.9,-62.38 -63.9,-62.3 -63.9,-62.3 -64.01,-62.3 -64.12,-62.3 -64.23,-62.3 -64.34,-62.3 -64.45,-62.3 -64.56,-62.3 -64.67,-62.3 -64.78,-62.3 -64.89,-62.3 -65,-62.38 -65,-62.46 -65,-62.54 -65,-62.62 -65,-62.7 -65,-62.78 -65,-62.86 -65,-62.94 -65,-63.02 -65,-63.1 -65,-63.1 -64.89,-63.1 -64.78,-63.1 -64.67,-63.1 -64.56,-63.1 -64.45,-63.1 -64.34,-63.1 -64.23,-63.1 -64.12,-63.1 -64.01,-63.1 -63.9))"], "date_created": "Tue, 04 Jan 2022 00:00:00 GMT", "description": "Nucleic acid sequences, sequence alignments, model selection results, and phylogenetic trees from the phylogenetic placement of Notoxcellia species. ", "east": -62.3, "geometry": ["POINT(-62.7 -64.45)"], "keywords": "Alveolata; Antarctica; Antarctic Peninsula; Biota; Notoxcellia Coronata; Notoxcellia Picta; Oceans; Perkinsozoa; Xcellidae", "locations": "Antarctic Peninsula; Antarctica", "north": -63.9, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Desvignes, Thomas; Varsani, Arvind; Postlethwait, John", "project_titles": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish ", "projects": [{"proj_uid": "p0010221", "repository": "USAP-DC", "title": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish "}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Phylogenetic Analysis of Notoxcellia species.", "uid": "601501", "west": -63.1}, {"awards": "1947040 Postlethwait, John", "bounds_geometry": ["POLYGON((-65.3 -63.3,-65 -63.3,-64.7 -63.3,-64.4 -63.3,-64.1 -63.3,-63.8 -63.3,-63.5 -63.3,-63.2 -63.3,-62.9 -63.3,-62.6 -63.3,-62.3 -63.3,-62.3 -63.47,-62.3 -63.64,-62.3 -63.81,-62.3 -63.98,-62.3 -64.15,-62.3 -64.32,-62.3 -64.49,-62.3 -64.66,-62.3 -64.83,-62.3 -65,-62.6 -65,-62.9 -65,-63.2 -65,-63.5 -65,-63.8 -65,-64.1 -65,-64.4 -65,-64.7 -65,-65 -65,-65.3 -65,-65.3 -64.83,-65.3 -64.66,-65.3 -64.49,-65.3 -64.32,-65.3 -64.15,-65.3 -63.98,-65.3 -63.81,-65.3 -63.64,-65.3 -63.47,-65.3 -63.3))"], "date_created": "Thu, 16 Dec 2021 00:00:00 GMT", "description": "Temperature profiles at five fishing locations on the West Antarctic Peninsula during austral fall 2018. All profiles were recorded using a DST centi-TD Miniature Temperature and Depth Data Logger (Star-Oddi, Gar\u00f0ab\u00e6r, Iceland) mounted on one of the two otters of the fishing net, thus continuously recording temperature while going down, at the bottom, and while ascending the water column. The two temperature profiles in the Gerlache Strait were recorded using XBT probes (Expendable Bathythermograph) Sippican Deep Blue 760-M and thus show unidirectional temperature profiles.", "east": -62.3, "geometry": ["POINT(-63.8 -64.15)"], "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctic Peninsula; Antarctica", "north": -63.3, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Desvignes, Thomas", "project_titles": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish ", "projects": [{"proj_uid": "p0010221", "repository": "USAP-DC", "title": "EAGER: Origin and Physiological Consequences of a Neoplasm Outbreak in Antarctic Fish "}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Temperature profiles at five fishing locations on the West Antarctic Peninsula during austral fall 2018.", "uid": "601495", "west": -65.3}, {"awards": "0732625 Leventer, Amy; 1433140 Domack, Eugene", "bounds_geometry": ["POLYGON((-69 -58,-67.7 -58,-66.4 -58,-65.1 -58,-63.8 -58,-62.5 -58,-61.2 -58,-59.9 -58,-58.6 -58,-57.3 -58,-56 -58,-56 -59,-56 -60,-56 -61,-56 -62,-56 -63,-56 -64,-56 -65,-56 -66,-56 -67,-56 -68,-57.3 -68,-58.6 -68,-59.9 -68,-61.2 -68,-62.5 -68,-63.8 -68,-65.1 -68,-66.4 -68,-67.7 -68,-69 -68,-69 -67,-69 -66,-69 -65,-69 -64,-69 -63,-69 -62,-69 -61,-69 -60,-69 -59,-69 -58))"], "date_created": "Mon, 15 Nov 2021 00:00:00 GMT", "description": "This data set contains an age vs depth model and measurements of magnetic susceptibility, benthic foraminifera Bulimina aculeata d18O and d13C, bulk sediment GDGT data, and diatom assemblage data from USAP LMG13-11 JKC-1 sediment core (0-100 cm) archived at the Oregon State University ACC repository. All stable isotope and GDGT measurements were made at the University of South Florida College of Marine Science. Diatom assemblages were counted at Colgate University. The data set includes all replicate measurements. Details of the entire data set and all relevant methods are provided in Browne et al (submitted, 2021)", "east": -56.0, "geometry": ["POINT(-62.5 -63)"], "keywords": "Antarctica; Antarctic Peninsula; Delta 13C; Delta 18O; Paleoceanography; Temperature", "locations": "Antarctica; Antarctic Peninsula", "north": -58.0, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Integrated System Science", "persons": "Shevenell, Amelia", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -68.0, "title": "LMG13-11 JKC-1 Paleoceanographic data", "uid": "601485", "west": -69.0}, {"awards": null, "bounds_geometry": ["POLYGON((-57.7 -64.2,-46.44 -64.2,-35.18 -64.2,-23.92 -64.2,-12.66 -64.2,-1.4 -64.2,9.86 -64.2,21.12 -64.2,32.38 -64.2,43.64 -64.2,54.9 -64.2,54.9 -65.99,54.9 -67.78,54.9 -69.57,54.9 -71.36,54.9 -73.15,54.9 -74.94,54.9 -76.73,54.9 -78.52,54.9 -80.31,54.9 -82.1,43.64 -82.1,32.38 -82.1,21.12 -82.1,9.86 -82.1,-1.4 -82.1,-12.66 -82.1,-23.92 -82.1,-35.18 -82.1,-46.44 -82.1,-57.7 -82.1,-57.7 -80.31,-57.7 -78.52,-57.7 -76.73,-57.7 -74.94,-57.7 -73.15,-57.7 -71.36,-57.7 -69.57,-57.7 -67.78,-57.7 -65.99,-57.7 -64.2))"], "date_created": "Fri, 16 Jul 2021 00:00:00 GMT", "description": "This dataset includes:\r\n1) rBC concentration and flux for 6 Antarctic ice core sites (JRI_2008, JRI_D98, NUS08_7, NUS07_7, B53, and B40). \r\n2) FLEXPART backward-model emission sensitivities for 4 Antarctic ice core sites (JRI, B40, B53, NUS07_7). \r\n3) FLEXPART forward-model deposition for simulated biomass burning emissions from New Zealand.\r\n4) Tie points to constrain flow model used to develop JRI_2008 chronology.", "east": 54.9, "geometry": ["POINT(-1.4 -73.15)"], "keywords": "Antarctica; Antarctic Peninsula; Biomass Burning; Black Carbon; Dronning Maud Land; East Antarctic Plateau; Ice Core", "locations": "Antarctica; Antarctic Peninsula; Dronning Maud Land; East Antarctic Plateau", "north": -64.2, "nsf_funding_programs": null, "persons": "McConnell, Joseph; Chellman, Nathan", "project_titles": null, "projects": null, "repositories": null, "science_programs": null, "south": -82.1, "title": "Common-era black carbon deposition and atmospheric modeling for 6 Antarctic ice cores", "uid": "601464", "west": -57.7}, {"awards": "0739575 Emslie, Steven", "bounds_geometry": ["POLYGON((-57.3 -63.3,-57.22 -63.3,-57.14 -63.3,-57.06 -63.3,-56.98 -63.3,-56.9 -63.3,-56.82 -63.3,-56.74 -63.3,-56.66 -63.3,-56.58 -63.3,-56.5 -63.3,-56.5 -63.4,-56.5 -63.5,-56.5 -63.6,-56.5 -63.7,-56.5 -63.8,-56.5 -63.9,-56.5 -64,-56.5 -64.1,-56.5 -64.2,-56.5 -64.3,-56.58 -64.3,-56.66 -64.3,-56.74 -64.3,-56.82 -64.3,-56.9 -64.3,-56.98 -64.3,-57.06 -64.3,-57.14 -64.3,-57.22 -64.3,-57.3 -64.3,-57.3 -64.2,-57.3 -64.1,-57.3 -64,-57.3 -63.9,-57.3 -63.8,-57.3 -63.7,-57.3 -63.6,-57.3 -63.5,-57.3 -63.4,-57.3 -63.3))"], "date_created": "Wed, 30 Jun 2021 00:00:00 GMT", "description": "Total mercury concentrations and corrected stable isotope signatures quantified in Ad\u00e9lie Penguin eggshell membrane and feathers recovered from the breast of deceased fledglings. Samples were collected in the austral summer of 2013/2014 in the northern Antarctic Peninsula region.", "east": -56.5, "geometry": ["POINT(-56.9 -63.8)"], "keywords": "Adelie Penguin; Antarctica; Antarctic Peninsula; Mercury; Penguin", "locations": "Antarctic Peninsula; Antarctica", "north": -63.3, "nsf_funding_programs": null, "persons": "McKenzie, Ashley", "project_titles": "Stable Isotope Analyses of Pygoscelid Penguin remains from Active and Abandoned Colonies in Antarctica", "projects": [{"proj_uid": "p0000317", "repository": "USAP-DC", "title": "Stable Isotope Analyses of Pygoscelid Penguin remains from Active and Abandoned Colonies in Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.3, "title": "Egg membrane and chick feather THg concentration and stable isotope composition", "uid": "601459", "west": -57.3}, {"awards": "1543432 Hock, Regine", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Tue, 22 Jun 2021 00:00:00 GMT", "description": "This dataset contains the total number of days per year with meltwater present at the surface across the Antarctic ice sheet and surrounding ice shelves derived from passive microwave satellite observations for each melt year from 1979/80 to 2019/20. This data comes from daily and near-daily SMMR, SSM/I, and SSMIS results at 25 km resolution at 19 GHz horizontal polarization. Each melt year starts on July 1 and ends June 30. The melt detection algorithm is described in Johnson and others (2020) and uses KMeans clustering analysis of the annual brightness temperature time series on each pixel to detect melt for that pixel and year. ", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Glaciers/ice Sheet; Glaciers/Ice Sheet; Melt Days; Passive Microwave; Snow/ice; Snow/Ice; Surface Melt", "locations": "Antarctica; Antarctica", "north": -60.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Johnson, Andrew; Hock, Regine; Fahnestock, Mark", "project_titles": "Collaborative Research: Present and Projected Future Forcings on Antarctic Peninsula Glaciers and Ice Shelves using the Weather Forecasting and Research (WRF) Model", "projects": [{"proj_uid": "p0010408", "repository": "USAP-DC", "title": "Collaborative Research: Present and Projected Future Forcings on Antarctic Peninsula Glaciers and Ice Shelves using the Weather Forecasting and Research (WRF) Model"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Antarctic passive microwave Kmeans derived surface melt days, 1979-2020", "uid": "601457", "west": -180.0}, {"awards": "1341602 Crockett, Elizabeth; 1341663 O\u0027Brien, Kristin", "bounds_geometry": null, "date_created": "Thu, 24 Dec 2020 00:00:00 GMT", "description": "Antarctic notothenioids are noted for extreme stenothermy, yet underpinnings of their thermal limits are not fully understood. We hypothesized that properties of ventricular membranes could explain previously observed differences among notothenioids in temperature onset of cardiac arrhythmias and persistent asystole. Microsomes were prepared using ventricles from six species of notothenioids, including four species from the hemoglobin-less (Hb-) family Channichthyidae (icefishes), which also differentially express cardiac myoglobin (Mb), and two species from the (Hb+) Nototheniidae. We determined membrane fluidity and structural integrity by quantifying fluorescence depolarization of 1,6-diphenyl-1,3,5-hexatriene (DPH) and leakage of 5(6)-carboxyfluorescein, respectively, over a temperature range from ambient (0 \u00b0C) to 20 \u00b0C. Compositions of membrane phospholipids and cholesterol contents were also quantified. Membranes from all four species of icefishes exhibited greater fluidity than membranes from the red-blooded species N. coriiceps. Thermal sensitivity of fluidity did not vary among species. The greatest thermal sensitivity to leakage occurred between 0 and 5 \u00b0C for all species, while membranes from the icefish, Chaenocephalus aceratus (Hb-/Mb-) displayed leakage that was nearly 1.5-fold greater than leakage in N. coriiceps (Hb+/Mb+). Contents of phosphatidylethanolamine (PE) were approximately 1.5-fold greater in icefishes than in red-blooded fishes, and phospholipids had a higher degree of unsaturation in icefishes than in Hb + notothenioids. Cholesterol contents were lowest in Champsocephalus gunnari (Hb-/Mb-) and highest in the two Hb+/Mb + species, G. gibberifrons and N. coriiceps. Our results reveal marked differences in membrane properties and indicate a breach in membrane fluidity and structural integrity at a lower temperature in icefishes than in red-blooded notothenioids. ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "O\u0027Brien, Kristin; Evans, Elizabeth; Farnoud, Amir; Crockett, Elizabeth", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Thermal sensitivity of membrane fluidity and integrity in hearts of Antarctic fishes that vary in expression of hemoglobin and myoglobin", "uid": "601414", "west": null}, {"awards": "1341602 Crockett, Elizabeth; 1341663 O\u0027Brien, Kristin", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "Icefishes characteristically lack the oxygen-binding protein haemoglobin and therefore are especially reliant on cardiovascular regulation to augment oxygen transport when oxygen demand increases, such as during activity and warming. Using both in vivo and in vitro experiments, we evaluated the roles for adrenaline and adenosine, two well-established cardio- and vasoactive molecules, in regulating the cardiovascular system of the blackfin icefish, Chaenocephalus aceratus. Despite increasing cardiac contractility (increasing twitch force and contraction kinetics in isometric myocardial strip preparations) and accelerating heart rate (\u0192H), adrenaline (5 nmol kg-1 bolus intra-arterial injection) did not significantly increase cardiac output (Q\u0307) in vivo because it elicited a large decrease in vascular conductance (Gsys). In contrast, and despite preliminary data suggesting a direct negative inotropic effect of adenosine on isolated atria and little effect on isolated ventricle strips, adenosine (500 nmol kg-1) generated a large increase in Q\u0307 by increasing Gsys, a change reminiscent of that previously reported during both acute warming and invoked activity. Our data thus illustrate how Q\u0307 in C. aceratus may be much more dependent on peripheral control of vasomotor tone than direct regulation of the heart. ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctic Peninsula; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Joyce, Michael; Axelsson, Michael; Farrell, Anthony; Egginton, Stuart; O\u0027Brien, Kristin", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Adrenergic and adenosinergic regulation of the cardiovascular system in the Antarctic icefish Chaenocephalus aceratus", "uid": "601409", "west": null}, {"awards": "1341663 O\u0027Brien, Kristin", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "Studies in temperate fishes provide evidence that cardiac mitochondrial function and the capacity to fuel cardiac work contribute to thermal tolerance. Here, we tested the hypothesis that decreased cardiac aerobic metabolic capacity contributes to the lower thermal tolerance of the haemoglobinless Antarctic icefish, Chaenocephalus aceratus, compared with that of the red-blooded Antarctic species, Notothenia coriiceps. Maximal activities of citrate synthase (CS) and lactate dehydrogenase (LDH), respiration rates of isolated mitochondria, adenylate levels and changes in mitochondrial protein expression were quantified from hearts of animals held at ambient temperature or exposed to their critical thermal maximum (CTmax). Compared with C. aceratus, activity of CS, ATP concentration and energy charge were higher in hearts of N. coriiceps at ambient temperature and CTmax While state 3 mitochondrial respiration rates were not impaired by exposure to CTmax in either species, state 4 rates, indicative of proton leakage, increased following exposure to CTmax in C. aceratus but not N. coriiceps The interactive effect of temperature and species resulted in an increase in antioxidants and aerobic metabolic enzymes in N. coriiceps but not in C. aceratus Together, our results support the hypothesis that the lower aerobic metabolic capacity of C. aceratus hearts contributes to its low thermal tolerance. ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "O\u0027Brien, Kristin", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Cardiac metabolism in Antarctic fishes in response to an acute increase in temperature", "uid": "601405", "west": null}, {"awards": "1341663 O\u0027Brien, Kristin; 1341602 Crockett, Elizabeth", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "The ability of Antarctic notothenioid fishes to mount a robust molecular response to hypoxia is largely unknown. The transcription factor, hypoxia-inducible factor-1 (HIF-1), a heterodimer of HIF-1\u03b1 and HIF-1\u03b2 subunits, is the master regulator of oxygen homeostasis in most metazoans. We sought to determine if, in the hearts of Antarctic notothenioids, HIF-1 is activated and functional in response to either an acute heat stress or hypoxia. The red-blooded Notothenia coriiceps and the hemoglobinless icefish, Chaenocephalus aceratus, were exposed to their critical thermal maximum (CTMAX) or hypoxia (5.0 \u00b1 0.3 mg of O2 L-1) for 2 h. Additionally, N. coriiceps was exposed to 2.3 \u00b1 0.3 mg of O2 L-1 for 12 h, and red-blooded Gobionotothen gibberifrons was exposed to both levels of hypoxia. Levels of HIF-1\u03b1 were quantified in nuclei isolated from heart ventricles using western blotting. Transcript levels of genes involved in anaerobic metabolism, and known to be regulated by HIF-1, were quantified by real-time PCR, and lactate levels were measured in heart ventricles. Protein levels of HIF-1\u03b1 increase in nuclei of hearts of N. coriiceps and C. aceratus in response to exposure to CTMAX and in hearts of N. coriiceps exposed to severe hypoxia, yet mRNA levels of anaerobic metabolic genes do not increase in any species, nor do lactate levels increase, suggesting that HIF-1 does not stimulate metabolic remodeling in hearts of notothenioids under these conditions. Together, these data suggest that Antarctic notothenioids may be vulnerable to hypoxic events, which are likely to increase with climate warming. ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctic Peninsula; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "O\u0027Brien, Kristin", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Hypoxia response of hearts of Antarctic fishes", "uid": "601406", "west": null}, {"awards": "1341663 O\u0027Brien, Kristin; 1341602 Crockett, Elizabeth", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "In fishes, the spleen can function as an important reservoir for red blood cells (RBCs), which, following splenic contraction, may be released into the circulation to increase haematocrit during energy\u2010demanding activities. This trait is particularly pronounced in red\u2010blooded Antarctic fishes in which the spleen can sequester a large proportion of RBCs during rest, thereby reducing blood viscosity, which may serve as an adaptation to life in cold environments. In one species, Pagothenia borchgrevinki, it has previously been shown that splenic contraction primarily depends on cholinergic stimulation. The aim of the present study was to investigate the regulation of splenic contraction in five other Antarctic fish species, three red\u2010blooded notothenioids (Dissostichus mawsoni Norman, 1937, Gobionotothen gibberifrons L\u00f6nnberg, 1905, Notothenia coriiceps Richardson 1844) and two white\u2010blooded \u201cicefish\u201d (Chaenocephalus aceratus L\u00f6nnberg, 1906 and Champsocephalus gunnari L\u00f6nnberg, 1905), which lack haemoglobin and RBCs, but nevertheless possess a large spleen. In all species, splenic strips constricted in response to both cholinergic (carbachol) and adrenergic (adrenaline) agonists. Surprisingly, in the two species of icefish, the spleen responded with similar sensitivity to red\u2010blooded species, despite contraction being of little obvious benefit for releasing RBCs into the circulation. Although the icefish lineage lost functional haemoglobin before diversifying over the past 7.8\u20134.8 millions of years, they retain the capacity to contract the spleen, likely as a vestige inherited from their red\u2010blooded ancestors.", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctic Peninsula; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "O\u0027Brien, Kristin; Joyce, William; Axelsson, Michael", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Measurements of splenic contraction in Antarctic fishes", "uid": "601407", "west": null}, {"awards": "1341663 O\u0027Brien, Kristin", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "The Southern Ocean has experienced stable, cold temperatures for over 10 million years, yet particular regions are currently undergoing rapid warming. To investigate the impacts of warming on cardiovascular oxygen transport, we compared the cardio-respiratory performance in an Antarctic notothenioid (Notothenia coriiceps) that was maintained at 0 or 5\u00b0C for 6.0-9.5 weeks. When compared at the fish\u0027s respective acclimation temperature, the oxygen consumption rate and cardiac output were significantly higher in 5\u00b0C-acclimated than 0\u00b0C-acclimated fish. The 2.7-fold elevation in cardiac output in 5\u00b0C-acclimated fish (17.4 vs. 6.5 ml min-1 kg-1) was predominantly due to a doubling of stroke volume, likely in response to increased cardiac preload, as measured by higher central venous pressure (0.15 vs. 0.08 kPa); tachycardia was minor (29.5 vs. 25.2 beats min-1). When fish were acutely warmed, oxygen consumption rate increased by similar amounts in 0\u00b0C- and 5\u00b0C-acclimated fish at equivalent test temperatures. In both acclimation groups, the increases in oxygen consumption rate during acute heating were supported by increased cardiac output achieved by elevating heart rate, while stroke volume changed relatively little. Cardiac output was similar between both acclimation groups until 12\u00b0C when cardiac output became significantly higher in 5\u00b0C-acclimated fish, driven largely by their higher stroke volume. Although cardiac arrhythmias developed at a similar temperature (~14.5\u00b0C) in both acclimation groups, the hearts of 5\u00b0C-acclimated fish continued to pump until significantly higher temperatures (CTmax for cardiac function 17.7 vs. 15.0\u00b0C for 0\u00b0C-acclimated fish). These results demonstrate that N. coriiceps is capable of increasing routine cardiac output during both acute and chronic warming, although the mechanisms are different (heart rate-dependent versus primarily stroke volume-dependent regulation, respectively). Cardiac performance was enhanced at higher temperatures following 5\u00b0C acclimation, suggesting cardiovascular function may not constrain the capacity of N. coriiceps to withstand a warming climate.", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula", "locations": "Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": null, "persons": "Joyce, William; Egginton, Stuart; Farrell, Anthony; Axelsson, Michael; Crockett, Elizabeth; O\u0027Brien, Kristin", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Acclimation of cardiovascular function in Notothenia coriiceps", "uid": "601408", "west": null}, {"awards": "1341663 O\u0027Brien, Kristin; 1341602 Crockett, Elizabeth", "bounds_geometry": null, "date_created": "Fri, 18 Dec 2020 00:00:00 GMT", "description": "We tested the hypothesis that blackfin icefish (Chaenocephalus aceratus), one of the six species in the family Channichthyidae (the icefishes) that do not express haemoglobin and myoglobin, lack regulatory cardiovascular flexibility during acute warming and activity. The experimental protocols were designed to optimize the surgical protocol and minimize stress. First, minimally invasive heart rate (fH) measurements were made during a thermal ramp until cardiac failure in C. aceratus and compared with those from the closely related red-blooded black rockcod (Notothenia coriiceps). Then, integrative cardiovascular adjustments were more extensively studied using flow probes and intravascular catheters in C. aceratus during acute warming (from 0 to 8\u00b0C) at rest and after imposed activity. Chaenocephalus aceratus had a lower routine fH than N. coriiceps (9 beats min-1 versus 14 beats min-1) and a lower peak fH during acute warming (38 beats min-1 versus 55 beats min-1) with a similar cardiac breakpoint temperature (13 and 14\u00b0C, respectively). Routine cardiac output (Q\u0307) for C. aceratus at \u223c0\u00b0C was much lower (26.6 ml min-1 kg-1) than previously reported, probably because fish in the present study had a low fH (12 beats min-1) indicative of a high routine vagal tone and low stress. Chaenocephalus aceratus increased oxygen consumption during acute warming and with activity. Correspondingly, Q\u0307 increased considerably (maximally 86.3 ml min-1 kg-1), as did vascular conductance (5-fold). Thus, unlike earlier suggestions, these data provide convincing evidence that icefish can mount a well-developed cardiovascular regulation of heart rate, cardiac output and vascular conductance, and this regulatory capacity provides flexibility during acute warming. ", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Biota; Fish", "locations": "Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Joyce, William; Farrell, Anthony; Axelsson, Michael; Egginton, Stuart; Crockett, Elizabeth; O\u0027Brien, Kristin", "project_titles": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010084", "repository": "USAP-DC", "title": "Collaborative Research: The Physiological and Biochemical Underpinnings of Thermal Tolerance in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Effects of acute warming on cardiovascular performance of Antarctic fishes", "uid": "601410", "west": null}, {"awards": "0724929 Simms, Alexander", "bounds_geometry": ["POLYGON((-61.8 -61.3,-61.07 -61.3,-60.34 -61.3,-59.61 -61.3,-58.88 -61.3,-58.15 -61.3,-57.42 -61.3,-56.69 -61.3,-55.96 -61.3,-55.23 -61.3,-54.5 -61.3,-54.5 -61.55,-54.5 -61.8,-54.5 -62.05,-54.5 -62.3,-54.5 -62.55,-54.5 -62.8,-54.5 -63.05,-54.5 -63.3,-54.5 -63.55,-54.5 -63.8,-55.23 -63.8,-55.96 -63.8,-56.69 -63.8,-57.42 -63.8,-58.15 -63.8,-58.88 -63.8,-59.61 -63.8,-60.34 -63.8,-61.07 -63.8,-61.8 -63.8,-61.8 -63.55,-61.8 -63.3,-61.8 -63.05,-61.8 -62.8,-61.8 -62.55,-61.8 -62.3,-61.8 -62.05,-61.8 -61.8,-61.8 -61.55,-61.8 -61.3))"], "date_created": "Fri, 06 Nov 2020 00:00:00 GMT", "description": "", "east": -54.5, "geometry": ["POINT(-58.15 -62.55)"], "keywords": "Antarctica; Grain Size; Granulometry; Joinville Island; Livingston Island; LMG0412; Raised Beaches", "locations": "Joinville Island; Livingston Island; Antarctica", "north": -61.3, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Theilen, Brittany; Simms, Alexander", "project_titles": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches", "projects": [{"proj_uid": "p0010132", "repository": "USAP-DC", "title": "Collaborative Research: New Constraints on Post-Glacial Rebound and Holocene Environmental History along the Northern Antarctic Peninsula from Raised Beaches"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -63.8, "title": "Granulometry of Joinville and Livingston Island beaches", "uid": "601400", "west": -61.8}, {"awards": "1745116 Scambos, Ted", "bounds_geometry": ["POLYGON((-72 -70.75,-71.95 -70.75,-71.9 -70.75,-71.85 -70.75,-71.8 -70.75,-71.75 -70.75,-71.7 -70.75,-71.65 -70.75,-71.6 -70.75,-71.55 -70.75,-71.5 -70.75,-71.5 -70.775,-71.5 -70.8,-71.5 -70.825,-71.5 -70.85,-71.5 -70.875,-71.5 -70.9,-71.5 -70.925,-71.5 -70.95,-71.5 -70.975,-71.5 -71,-71.55 -71,-71.6 -71,-71.65 -71,-71.7 -71,-71.75 -71,-71.8 -71,-71.85 -71,-71.9 -71,-71.95 -71,-72 -71,-72 -70.975,-72 -70.95,-72 -70.925,-72 -70.9,-72 -70.875,-72 -70.85,-72 -70.825,-72 -70.8,-72 -70.775,-72 -70.75))"], "date_created": "Wed, 21 Oct 2020 00:00:00 GMT", "description": "This dataset compiles a suite of glaciology (density, stratigraphy), hydrology (slug and dilution tests) and geophysical measurements (GPS, GPR, ApRES) to characterize a firn aquifer observed within the Wilkins Ice Shelf, Antarctica.", "east": -71.5, "geometry": ["POINT(-71.75 -70.875)"], "keywords": "Airborne Radar; Antarctica; Antarctic Peninsula; Firn; Firn Aquifer; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; GPR; Hydrology; Snow/ice; Snow/Ice; Wilkins Ice Shelf", "locations": "Wilkins Ice Shelf; Antarctica; Antarctic Peninsula; Wilkins Ice Shelf", "north": -70.75, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Mi\u00e8ge, Cl\u00e9ment; Montgomery, Lynn; Miller, Julie; Scambos, Ted; Wallin, Bruce; Miller, Olivia; Solomon, Kip; Forster, Richard; Koenig, Lora", "project_titles": "Antarctic Firn Aquifers: Extent, Characteristics, and Comparison with Greenland Occurrences", "projects": [{"proj_uid": "p0010126", "repository": "USAP-DC", "title": "Antarctic Firn Aquifers: Extent, Characteristics, and Comparison with Greenland Occurrences"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.0, "title": "Density, hydrology and geophysical measurements from the Wilkins Ice Shelf firn aquifer", "uid": "601390", "west": -72.0}, {"awards": "1341494 Gao, Yuan", "bounds_geometry": ["POINT(64 64)"], "date_created": "Mon, 24 Aug 2020 00:00:00 GMT", "description": "The dataset includes the concentrations and particle size distributions of aerosol trace elements (TEs) through the sampling of size-segregated aerosol particles made at Palmer Station, Antarctic Peninsula, which took place in the austral summer of 2016-2017. The estimated dry deposition fluxes of these elements were derived from these new results.", "east": 64.0, "geometry": ["POINT(64 64)"], "keywords": "Antarctica; Antarctic Peninsula; Palmer Station; Trace Elements", "locations": "Palmer Station; Antarctic Peninsula; Antarctica; Palmer Station", "north": 64.0, "nsf_funding_programs": "Antarctic Ocean and Atmospheric Sciences", "persons": "Gao, Yuan", "project_titles": "Quantifying Atmospheric Iron Properties over West Antarctic Peninsula", "projects": [{"proj_uid": "p0010082", "repository": "USAP-DC", "title": "Quantifying Atmospheric Iron Properties over West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": 64.0, "title": "Concentrations and Particle Size Distributions of Aerosol Trace Elements", "uid": "601370", "west": 64.0}, {"awards": "1826712 McMahon, Kelton; 1443585 Polito, Michael; 1443386 Emslie, Steven; 1443424 McMahon, Kelton", "bounds_geometry": ["POINT(-54.67855 -63.434067)"], "date_created": "Fri, 24 Jul 2020 00:00:00 GMT", "description": "This data set focuses on ornithogenic soils excavated from a test pit located in an active colony of Pygoscelis spp. penguins on Platter Island in the Danger Islands archipelago along the northeastern side of the Antarctic Peninsula in December 2015. It contains radiocarbon dates of recovered penguin tissues and the estimated age of ornithogenic soils by depth. It also contains measurements of carbon (\u03b413C) and nitrogen (\u03b415N) stable isotope values of Pygoscelis spp. penguins eggshell membrane and feather samples and Antarctic fur seal (Arctocephalus gazella) hair sample recovered from these ornithogenic soils. Accelerator Mass Spectrometry (AMS) was used to obtain radiocarbon dates at the Woods Hole National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. Radiocarbon Dates were corrected for the marine carbon reservoir effect and calibrated to calendar years before present (cal years BP) using a \u0394R of 750\u2009\u00b1\u200950 years and the MARINE13 calibration curve in Calib 7.04. The rbacon package ver. 2.3.9.1 in R was used to estimate age at depth of each soil level expressed as years relative to the common era (CE). Stable isotope analyses were conducted using an elemental analyzer coupled to a continuous flow stable isotope ratio mass spectrometer at Louisiana State University. The data set also includes associated data such as excavation date, location, site names, latitude/longitude, species, date of excavation, tissue used for radiocarbon dating, and carbon to nitrogen ratios. Details of the data set and all relevant methods are provided in Kalvakaalva et. al., 2020.", "east": -54.67855, "geometry": ["POINT(-54.67855 -63.434067)"], "keywords": "Antarctica; Antarctic Peninsula; Arctocephalus Gazella; Carbon; Holocene; Nitrogen; Paleoecology; Penguin; Pygoscelis Spp.; Stable Isotope Analysis; Weddell Sea", "locations": "Weddell Sea; Antarctica; Antarctic Peninsula", "north": -63.434067, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Kalvakaalva, Rohit; Clucas, Gemma; Herman, Rachael; Polito, Michael", "project_titles": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators", "projects": [{"proj_uid": "p0010047", "repository": "USAP-DC", "title": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -63.434067, "title": "Radiocarbon dating and stable isotope values of penguin and seal tissues recovered from ornithogenic soils on Platter Island, Danger Islands Archipelago, Antarctic Peninsula in December 2015.", "uid": "601364", "west": -54.67855}, {"awards": "0732467 Domack, Eugene; 0732651 Gordon, Arnold", "bounds_geometry": ["POLYGON((-68 -60,-66.7 -60,-65.4 -60,-64.1 -60,-62.8 -60,-61.5 -60,-60.2 -60,-58.9 -60,-57.6 -60,-56.3 -60,-55 -60,-55 -60.6,-55 -61.2,-55 -61.8,-55 -62.4,-55 -63,-55 -63.6,-55 -64.2,-55 -64.8,-55 -65.4,-55 -66,-56.3 -66,-57.6 -66,-58.9 -66,-60.2 -66,-61.5 -66,-62.8 -66,-64.1 -66,-65.4 -66,-66.7 -66,-68 -66,-68 -65.4,-68 -64.8,-68 -64.2,-68 -63.6,-68 -63,-68 -62.4,-68 -61.8,-68 -61.2,-68 -60.6,-68 -60))"], "date_created": "Thu, 25 Jun 2020 00:00:00 GMT", "description": "This data set was acquired with a ship-based LDEO LADCP Sonar during Nathaniel B. Palmer expedition NBP1001 conducted in 2010 (Chief Scientist: Dr. Eugene Domack; Investigator(s): Dr. Bruce Huber and Dr. Arnold Gordon). These data files are of Matlab Binary format and include Current Measurement data and were processed after data collection. Data were acquired as part of the project(s): Collaborative Research in IPY: Abrupt Environmental Change in the LARsen Ice Shelf System, Antarctica (LARISSA), and funding was provided by NSF grant(s): ANT07-32467.", "east": -55.0, "geometry": ["POINT(-61.5 -63)"], "keywords": "Antarctica; Antarctic Peninsula; Current Measurements; LADCP; Larsen Ice Shelf; NBP1001; Oceans; Physical Oceanography; R/v Nathaniel B. 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Palmer expedition NBP1001", "uid": "601346", "west": -68.0}, {"awards": "0732467 Domack, Eugene; 0732651 Gordon, Arnold", "bounds_geometry": ["POLYGON((-68 -60,-66.7 -60,-65.4 -60,-64.1 -60,-62.8 -60,-61.5 -60,-60.2 -60,-58.9 -60,-57.6 -60,-56.3 -60,-55 -60,-55 -60.6,-55 -61.2,-55 -61.8,-55 -62.4,-55 -63,-55 -63.6,-55 -64.2,-55 -64.8,-55 -65.4,-55 -66,-56.3 -66,-57.6 -66,-58.9 -66,-60.2 -66,-61.5 -66,-62.8 -66,-64.1 -66,-65.4 -66,-66.7 -66,-68 -66,-68 -65.4,-68 -64.8,-68 -64.2,-68 -63.6,-68 -63,-68 -62.4,-68 -61.8,-68 -61.2,-68 -60.6,-68 -60))"], "date_created": "Thu, 25 Jun 2020 00:00:00 GMT", "description": "This data set was acquired with a Sea-Bird SBE 9Plus CTD during Nathaniel B. Palmer expedition NBP1001 conducted in 2010 (Chief Scientist: Dr. Eugene Domack; Investigator(s): Dr. Bruce Huber and Dr. Arnold Gordon). These data files are of Matlab Binary format and include Temperature, Current Measurement, and Salinity data and were processed after data collection. 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Palmer expedition NBP1001", "uid": "601345", "west": -68.0}, {"awards": "1141890 Huber, Bruce; 0732651 Gordon, Arnold", "bounds_geometry": ["POLYGON((-62 -61,-61.3 -61,-60.6 -61,-59.9 -61,-59.2 -61,-58.5 -61,-57.8 -61,-57.1 -61,-56.4 -61,-55.7 -61,-55 -61,-55 -61.44,-55 -61.88,-55 -62.32,-55 -62.76,-55 -63.2,-55 -63.64,-55 -64.08,-55 -64.52,-55 -64.96,-55 -65.4,-55.7 -65.4,-56.4 -65.4,-57.1 -65.4,-57.8 -65.4,-58.5 -65.4,-59.2 -65.4,-59.9 -65.4,-60.6 -65.4,-61.3 -65.4,-62 -65.4,-62 -64.96,-62 -64.52,-62 -64.08,-62 -63.64,-62 -63.2,-62 -62.76,-62 -62.32,-62 -61.88,-62 -61.44,-62 -61))"], "date_created": "Thu, 25 Jun 2020 00:00:00 GMT", "description": "This data set was acquired with a ship-based LDEO LADCP Sonar during Nathaniel B. Palmer expedition NBP1203 conducted in 2012 (Chief Scientist: Dr. Maria Vernet; Investigator(s): Dr. Bruce Huber and Dr. Arnold Gordon). These data files are of Matlab Binary format and include Current Measurement data and were processed after data collection. Funding was provided by NSF grant(s): ANT11-41890.", "east": -55.0, "geometry": ["POINT(-58.5 -63.2)"], "keywords": "Antarctica; Antarctic Peninsula; Current Measurements; LADCP; LARISSA; Larsen Ice Shelf; NBP1203; Oceans; Physical Oceanography; R/v Nathaniel B. 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Palmer expedition NBP1203", "uid": "601347", "west": -62.0}, {"awards": "1141890 Huber, Bruce; 0732651 Gordon, Arnold", "bounds_geometry": ["POLYGON((-63 -60,-62.2 -60,-61.4 -60,-60.6 -60,-59.8 -60,-59 -60,-58.2 -60,-57.4 -60,-56.6 -60,-55.8 -60,-55 -60,-55 -60.5,-55 -61,-55 -61.5,-55 -62,-55 -62.5,-55 -63,-55 -63.5,-55 -64,-55 -64.5,-55 -65,-55.8 -65,-56.6 -65,-57.4 -65,-58.2 -65,-59 -65,-59.8 -65,-60.6 -65,-61.4 -65,-62.2 -65,-63 -65,-63 -64.5,-63 -64,-63 -63.5,-63 -63,-63 -62.5,-63 -62,-63 -61.5,-63 -61,-63 -60.5,-63 -60))"], "date_created": "Thu, 25 Jun 2020 00:00:00 GMT", "description": "This data set was acquired with a Sea-Bird SBE 9Plus CTD during Nathaniel B. Palmer expedition NBP1203 conducted in 2012 (Chief Scientist: Dr. Maria Vernet; Investigator(s): Dr. Bruce Huber and Dr. Arnold Gordon). These data files are of Matlab Binary format and include Current Measurement, Salinity, and Temperature data and were processed after data collection. Funding was provided by NSF grant(s): ANT11-41890.", "east": -55.0, "geometry": ["POINT(-59 -62.5)"], "keywords": "Antarctica; Antarctic Peninsula; CTD; CTD Data; LARISSA; Larsen Ice Shelf; NBP1203; Oceans; Physical Oceanography; R/v Nathaniel B. Palmer; Salinity; Temperature", "locations": "Antarctica; Antarctic Peninsula; Larsen Ice Shelf", "north": -60.0, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Ocean and Atmospheric Sciences", "persons": "Huber, Bruce; Gordon, Arnold", "project_titles": "Cape Adare Long Term Moorings (CALM): Analysis Phase; Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000495", "repository": "USAP-DC", "title": "Cape Adare Long Term Moorings (CALM): Analysis Phase"}, {"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Processed CTD Data from the Larsen Ice Shelf near Antarctica acquired during the Nathaniel B. Palmer expedition NBP1203", "uid": "601348", "west": -63.0}, {"awards": "1744584 Klein, Andrew; 1744550 Amsler, Charles; 1744570 Galloway, Aaron; 1744602 Iken, Katrin", "bounds_geometry": null, "date_created": "Thu, 04 Jun 2020 00:00:00 GMT", "description": "This .cvs file contains the latitude and longitude, along with closest geographic names, for the 15 study sites visited by projects projects ANT-1744550, -1744570, -1744584, and -1744602 during ARSV Laurence M. Gould cruise LMG 19-04 in April and May 2019.", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Biota; LMG1904; R/v Laurence M. Gould; Sample Location", "locations": "Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity", "projects": [{"proj_uid": "p0010104", "repository": "USAP-DC", "title": "Collaborative Research: Sea ice as a driver of Antarctic benthic macroalgal community composition and nearshore trophic connectivity"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Latitude and longitude data for project study sites", "uid": "601330", "west": null}, {"awards": "0636773 DeMaster, David; 1341669 DeMaster, David", "bounds_geometry": ["POLYGON((-71 -64,-70.4 -64,-69.8 -64,-69.2 -64,-68.6 -64,-68 -64,-67.4 -64,-66.8 -64,-66.2 -64,-65.6 -64,-65 -64,-65 -64.7,-65 -65.4,-65 -66.1,-65 -66.8,-65 -67.5,-65 -68.2,-65 -68.9,-65 -69.6,-65 -70.3,-65 -71,-65.6 -71,-66.2 -71,-66.8 -71,-67.4 -71,-68 -71,-68.6 -71,-69.2 -71,-69.8 -71,-70.4 -71,-71 -71,-71 -70.3,-71 -69.6,-71 -68.9,-71 -68.2,-71 -67.5,-71 -66.8,-71 -66.1,-71 -65.4,-71 -64.7,-71 -64))"], "date_created": "Mon, 11 May 2020 00:00:00 GMT", "description": "This data set is used to describe a new technique for assessing labile organic carbon (LOC) abundances and mean residence times in marine sediments. Radiocarbon is used to determine abundances of labile organic carbon and then a diagenetic organic carbon model, coupled with sediment biotrubation coefficients, is used to assess LOC mean residence times. ", "east": -65.0, "geometry": ["POINT(-68 -67.5)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Bioturbation Coefficients; Diagenesis; Labile Organic Carbon; LOC Mean Residence Times; Marguerite Bay; Oceans; Organic Carbon Degradation Rates; Sediment Core", "locations": "Marguerite Bay; Antarctic Peninsula; Antarctica", "north": -64.0, "nsf_funding_programs": "Antarctic Earth Sciences; Antarctic Organisms and Ecosystems", "persons": "DeMaster, David; Taylor, Richard; Smith, Craig; Isla, Enrique; Thomas, Carrie", "project_titles": "Collaborative Research: Benthic Faunal Feeding Dynamics on the Antarctic Shelf and the Effects of Global Climate Change on Bentho-Pelagic Coupling; Using Radiochemical Data from Collapsed Ice Shelf Sediments to Understand the Nature and Timing of the Benthic Response to High-Latitude Climate Change", "projects": [{"proj_uid": "p0000552", "repository": "USAP-DC", "title": "Collaborative Research: Benthic Faunal Feeding Dynamics on the Antarctic Shelf and the Effects of Global Climate Change on Bentho-Pelagic Coupling"}, {"proj_uid": "p0000382", "repository": "USAP-DC", "title": "Using Radiochemical Data from Collapsed Ice Shelf Sediments to Understand the Nature and Timing of the Benthic Response to High-Latitude Climate Change"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.0, "title": "Labile Organic Carbon distributions on the West Antarctic Peninsula Shelf", "uid": "601319", "west": -71.0}, {"awards": "1440435 Ducklow, Hugh; 1644209 Goldbogen, Jeremy", "bounds_geometry": ["POLYGON((-64.5 -63,-63.95 -63,-63.4 -63,-62.85 -63,-62.3 -63,-61.75 -63,-61.2 -63,-60.65 -63,-60.1 -63,-59.55 -63,-59 -63,-59 -63.22,-59 -63.44,-59 -63.66,-59 -63.88,-59 -64.1,-59 -64.32,-59 -64.54,-59 -64.76,-59 -64.98,-59 -65.2,-59.55 -65.2,-60.1 -65.2,-60.65 -65.2,-61.2 -65.2,-61.75 -65.2,-62.3 -65.2,-62.85 -65.2,-63.4 -65.2,-63.95 -65.2,-64.5 -65.2,-64.5 -64.98,-64.5 -64.76,-64.5 -64.54,-64.5 -64.32,-64.5 -64.1,-64.5 -63.88,-64.5 -63.66,-64.5 -63.44,-64.5 -63.22,-64.5 -63))"], "date_created": "Sun, 10 May 2020 00:00:00 GMT", "description": "This dataset contains UAV (drone) still images and video footage from whales in the Antarctic Peninsula region taken from LM Gould expedition (LMG1802) and small zodiacs. 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New results include particle-size distributions of total Fe, labile Fe, and fractional Fe solubility in aerosols from these samples.", "east": -64.05, "geometry": ["POINT(-64.05 -64.766)"], "keywords": "Aerosol Concentration; Antarctica; Chemistry:gas; Chemistry:Gas; Iron; Palmer Station; Particle Size", "locations": "Palmer Station; Antarctica", "north": -64.766, "nsf_funding_programs": "Antarctic Ocean and Atmospheric Sciences", "persons": "Gao, Yuan", "project_titles": "Quantifying Atmospheric Iron Properties over West Antarctic Peninsula", "projects": [{"proj_uid": "p0010082", "repository": "USAP-DC", "title": "Quantifying Atmospheric Iron Properties over West Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.766, "title": "Particle sizes of aerosol iron", "uid": "601257", "west": -64.05}, {"awards": "1443680 Smith, Craig", "bounds_geometry": ["POLYGON((-66 -64,-65.6 -64,-65.2 -64,-64.8 -64,-64.4 -64,-64 -64,-63.6 -64,-63.2 -64,-62.8 -64,-62.4 -64,-62 -64,-62 -64.1,-62 -64.2,-62 -64.3,-62 -64.4,-62 -64.5,-62 -64.6,-62 -64.7,-62 -64.8,-62 -64.9,-62 -65,-62.4 -65,-62.8 -65,-63.2 -65,-63.6 -65,-64 -65,-64.4 -65,-64.8 -65,-65.2 -65,-65.6 -65,-66 -65,-66 -64.9,-66 -64.8,-66 -64.7,-66 -64.6,-66 -64.5,-66 -64.4,-66 -64.3,-66 -64.2,-66 -64.1,-66 -64))"], "date_created": "Tue, 31 Dec 2019 00:00:00 GMT", "description": "Sediment macrofaunal data collected by megacore (10-cm diameter sample tubes) along a down-fjord transect from inner Andvord Bay out onto the open continental shelf on the West Antarctic Peninsula. Sediment core samples from 0 - 10 cm depths were fixed in 4% formaldehyde, sieved on a 300 micron seive, and sorted with a dissecting microscope. ", "east": -62.0, "geometry": ["POINT(-64 -64.5)"], "keywords": "Abundance; Andvord Bay; Antarctica; Antarctic Peninsula; Biota; Fjord; LMG1510; Marine Sediments; Oceans; Polychaete; Polychaete Family Richness; R/v Laurence M. Gould; Sediment Core Data; Sediment Macrofauna", "locations": "Antarctica; Andvord Bay; Antarctic Peninsula", "north": -64.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Smith, Craig", "project_titles": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)", "projects": [{"proj_uid": "p0010010", "repository": "USAP-DC", "title": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "FjordEco", "south": -65.0, "title": "Sediment macrofaunal abundance and family richness from inner Andvord Bay to the open continental shelf", "uid": "601236", "west": -66.0}, {"awards": "1443585 Polito, Michael; 1826712 McMahon, Kelton; 1443424 McMahon, Kelton; 1443386 Emslie, Steven", "bounds_geometry": ["POLYGON((-63.56 -60.72,-61.664 -60.72,-59.768 -60.72,-57.872 -60.72,-55.976 -60.72,-54.08 -60.72,-52.184 -60.72,-50.288 -60.72,-48.392 -60.72,-46.496 -60.72,-44.6 -60.72,-44.6 -61.106,-44.6 -61.492,-44.6 -61.878,-44.6 -62.264,-44.6 -62.65,-44.6 -63.036,-44.6 -63.422,-44.6 -63.808,-44.6 -64.194,-44.6 -64.58,-46.496 -64.58,-48.392 -64.58,-50.288 -64.58,-52.184 -64.58,-54.08 -64.58,-55.976 -64.58,-57.872 -64.58,-59.768 -64.58,-61.664 -64.58,-63.56 -64.58,-63.56 -64.194,-63.56 -63.808,-63.56 -63.422,-63.56 -63.036,-63.56 -62.65,-63.56 -62.264,-63.56 -61.878,-63.56 -61.492,-63.56 -61.106,-63.56 -60.72))"], "date_created": "Tue, 17 Dec 2019 00:00:00 GMT", "description": "This data set contains measurements of nitrogen (\u03b415N) stable isotope values of twelve individual amino acids from breast feathers of gentoo penguins (Pygoscelis papua) and chinstrap penguins (Pygoscelis antarctica) collected from museum archives between the 1930s and 2010s. Stable isotope analyses were conducted using a gas chromatograph coupled to a continuous flow stable isotope ratio mass spectrometer. The data set also includes trophic positions of penguins calculated from individual amino acid \u03b415N values.\r\nThe data set indexes each individual penguin with species, collection institution, catalog number, sex, locality, latitude, longitude, year of sample collection, nitrogen isotope ratios, and calculated trophic position. Details of the data set and all relevant methods are provided in McMahon et al. 2020 Proc Natl Acad Sci DOI: 10.1073/pnas.1913093116 ", "east": -44.6, "geometry": ["POINT(-54.08 -62.65)"], "keywords": "Amino Acids; Antarctica; Antarctic Peninsula; Biota; Isotope Data; Nitrogen Isotopes; Oceans; Penguin; Southern Ocean; Stable Isotope Analysis", "locations": "Antarctica; Antarctic Peninsula; Southern Ocean; Antarctica", "north": -60.72, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "McMahon, Kelton; Polito, Michael", "project_titles": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators", "projects": [{"proj_uid": "p0010047", "repository": "USAP-DC", "title": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.58, "title": "Amino acid nitrogen isotope values of penguins from the Antarctic Peninsula region 1930s to 2010s", "uid": "601232", "west": -63.56}, {"awards": "1341339 Baker, Bill", "bounds_geometry": ["POLYGON((-64.03 -64.254,-64.0286 -64.254,-64.0272 -64.254,-64.0258 -64.254,-64.0244 -64.254,-64.023 -64.254,-64.0216 -64.254,-64.0202 -64.254,-64.0188 -64.254,-64.0174 -64.254,-64.016 -64.254,-64.016 -64.2543,-64.016 -64.2546,-64.016 -64.2549,-64.016 -64.2552,-64.016 -64.2555,-64.016 -64.2558,-64.016 -64.2561,-64.016 -64.2564,-64.016 -64.2567,-64.016 -64.257,-64.0174 -64.257,-64.0188 -64.257,-64.0202 -64.257,-64.0216 -64.257,-64.023 -64.257,-64.0244 -64.257,-64.0258 -64.257,-64.0272 -64.257,-64.0286 -64.257,-64.03 -64.257,-64.03 -64.2567,-64.03 -64.2564,-64.03 -64.2561,-64.03 -64.2558,-64.03 -64.2555,-64.03 -64.2552,-64.03 -64.2549,-64.03 -64.2546,-64.03 -64.2543,-64.03 -64.254))"], "date_created": "Wed, 09 Oct 2019 00:00:00 GMT", "description": "Samples of the red alga Plocamium cartilagineum were collected from the area around Palmer Station, Antarctica, and characterized by gas chromatography for their secondary metabolite content. Patterns in secondary metabolite content were used to establish chemical phenotypes (chemotypes).", "east": -64.016, "geometry": ["POINT(-64.023 -64.2555)"], "keywords": "Algae; Antarctica; Biota; Chemical Ecology; Chemotyping; Halogenated Monoterpenes; Natural Products; Oceans; Palmer Station; Plocamium Cartilagineum; Southern Ocean; Terpenes", "locations": "Palmer Station; Palmer Station; Southern Ocean; Antarctica", "north": -64.254, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Baker, Bill", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.257, "title": "Plocamium cartilagineum field chemotyping", "uid": "601215", "west": -64.03}, {"awards": "1826712 McMahon, Kelton; 1443386 Emslie, Steven; 1443585 Polito, Michael; 1443424 McMahon, Kelton", "bounds_geometry": ["POLYGON((-59 -62,-58.9 -62,-58.8 -62,-58.7 -62,-58.6 -62,-58.5 -62,-58.4 -62,-58.3 -62,-58.2 -62,-58.1 -62,-58 -62,-58 -62.1,-58 -62.2,-58 -62.3,-58 -62.4,-58 -62.5,-58 -62.6,-58 -62.7,-58 -62.8,-58 -62.9,-58 -63,-58.1 -63,-58.2 -63,-58.3 -63,-58.4 -63,-58.5 -63,-58.6 -63,-58.7 -63,-58.8 -63,-58.9 -63,-59 -63,-59 -62.9,-59 -62.8,-59 -62.7,-59 -62.6,-59 -62.5,-59 -62.4,-59 -62.3,-59 -62.2,-59 -62.1,-59 -62))"], "date_created": "Tue, 24 Sep 2019 00:00:00 GMT", "description": "Radiocarbon dates from pygoscelid penguin tissues from ornithogenic soils and beach deposits at Stranger Point, King George (25 de Mayo) Island, Antarctic Peninsula. Uncorrected dates are in radiocarbon years before present (BP); calibrated dates were corrected for the marine carbon reservoir effect (delta R = 700 +/- 50 years) and calibrated with Calib 7.0.4 to provide 2\u03c3 ranges in calendar years BP. All dates except were completed at the Woods Hole National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility and are designated with OS numbers. Localities include ancient penguin breedings sites (mounds, M), active colonies (I9, B3), and a mid-Holocene marine beach deposit (Pingfo 1).", "east": -58.0, "geometry": ["POINT(-58.5 -62.5)"], "keywords": "Abandoned Colonies; Antarctica; Antarctic Peninsula; Beach Deposit; Geochronology; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Holocene; Penguin; Radiocarbon; Radiocarbon Dates; Snow/ice; Snow/Ice; Stranger Point", "locations": "Stranger Point; Antarctic Peninsula; Antarctica", "north": -62.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Emslie, Steven D.", "project_titles": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators", "projects": [{"proj_uid": "p0010047", "repository": "USAP-DC", "title": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -63.0, "title": "Radiocarbon dates from pygoscelid penguin tissues excavated at Stranger Point, King George Island, Antarctic Peninsula", "uid": "601212", "west": -59.0}, {"awards": "0732625 Leventer, Amy; 9714371 Leventer, Amy", "bounds_geometry": ["POLYGON((-64 -63,-63.1 -63,-62.2 -63,-61.3 -63,-60.4 -63,-59.5 -63,-58.6 -63,-57.7 -63,-56.8 -63,-55.9 -63,-55 -63,-55 -63.4,-55 -63.8,-55 -64.2,-55 -64.6,-55 -65,-55 -65.4,-55 -65.8,-55 -66.2,-55 -66.6,-55 -67,-55.9 -67,-56.8 -67,-57.7 -67,-58.6 -67,-59.5 -67,-60.4 -67,-61.3 -67,-62.2 -67,-63.1 -67,-64 -67,-64 -66.6,-64 -66.2,-64 -65.8,-64 -65.4,-64 -65,-64 -64.6,-64 -64.2,-64 -63.8,-64 -63.4,-64 -63))"], "date_created": "Mon, 16 Sep 2019 00:00:00 GMT", "description": "Diatom data from eastern side of Antarctic Peninsula:\r\n\r\nThis file includes quantitative diatom data for surface samples collected on numerous cruises to the eastern side of the Antarctic Peninsula, including NBP0003, NBP0107, LMG0502, NBP0603, and NBP1203. Samples were collected using a variety of tools including Smith-McIntyre Grab, Kasten Core and Jumbo Kasten Core. These data were generated by Amy Leventer (aleventer@colgate.edu) and undergraduate students at Colgate University. All questions regarding the specifics of these data should be directed to Amy Leventer. \r\n\r\nQuantitative diatom slides were prepared according to the settling technique of Scherer (1995). Cover slips were adhered to the slides using Norland Optical Adhesive #61. Slides were observed under Olympus CX31, BX50 and BX60, and Zeiss Primo Star light microscopes, using a 100X oil immersion objective for a total magnification of 1000X. A minimum of 400 valves or 10 transects was counted for each slide, depending on the absolute diatom abundance. Valves were only counted if \u003e50% complete. Diatoms were identified to species level when possible (Crosta et al., 2005; Armand et al., 2005; Cefarelli et al., 2010).\r\n\r\nArmand, L.K., X. Crosta, O. Romero, J. J. Pichon (2005), The biogeography of major diatom taxa in Southern Ocean sediments: 1. Sea ice related species, Paleogeography, Paleoclimatology, Paleoecology, 223, 93-126. \r\n\r\nCefarelli, A.O., M. E. Ferrario, G. O. Almandoz, A. G. Atencio, R. Akselman, M. Vernet (2010), Diversity of the diatom genus Fragilariopsis in the Argentine Sea and Antarctic waters: morphology, distribution and abundance, Polar Biology, 33(2), 1463-1484. \r\n\r\nCrosta, X., O. Romero, L. K. Armand, J. Pichon (2005), The biogeography of major diatom taxa in Southern Ocean sediments: 2. Open ocean related species, Palaeogeography, Palaeoclimatology, Palaeoecology, 223, 66-92. \r\n\r\nScherer, R. P., A new method for the determination of absolute abundance of diatoms and other silt-sized sedimentary particles, J. Paleolimnol., 12, 171\u2013178, 1995.\r\n", "east": -55.0, "geometry": ["POINT(-59.5 -65)"], "keywords": "Antarctica; Antarctic Peninsula; Benthos; Biota; Diatom; Geology/Geophysics - Other; LMG0502; Marine Geoscience; Marine Sediments; Microscope; NBP0003; NBP0107; NBP0603; NBP1203; R/v Nathaniel B. Palmer; Surface Sediment", "locations": "Antarctica; Antarctic Peninsula", "north": -63.0, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Ocean and Atmospheric Sciences", "persons": "Leventer, Amy", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -67.0, "title": "Easten Antarctic Peninsula Surface Sediment Diatom Data", "uid": "601211", "west": -64.0}, {"awards": "1443585 Polito, Michael; 1826712 McMahon, Kelton; 1443424 McMahon, Kelton; 1443386 Emslie, Steven", "bounds_geometry": ["POLYGON((-63 -60,-62.1 -60,-61.2 -60,-60.3 -60,-59.4 -60,-58.5 -60,-57.6 -60,-56.7 -60,-55.8 -60,-54.9 -60,-54 -60,-54 -60.4,-54 -60.8,-54 -61.2,-54 -61.6,-54 -62,-54 -62.4,-54 -62.8,-54 -63.2,-54 -63.6,-54 -64,-54.9 -64,-55.8 -64,-56.7 -64,-57.6 -64,-58.5 -64,-59.4 -64,-60.3 -64,-61.2 -64,-62.1 -64,-63 -64,-63 -63.6,-63 -63.2,-63 -62.8,-63 -62.4,-63 -62,-63 -61.6,-63 -61.2,-63 -60.8,-63 -60.4,-63 -60))"], "date_created": "Fri, 13 Sep 2019 00:00:00 GMT", "description": "This data set contains measurements of carbon (\u03b413C) and nitrogen (\u03b415N) stable isotope values of whole-body Antarctic krill (Euphausia superba) collected from trawl surveys of waters surrounding the South Shetland Islands and the northern Antarctic Peninsula during the 2006-07 and 2008-90 Austral summers. Stable isotope analyses were conducted using an elemental analyzer coupled to a continuous flow stable isotope ratio mass spectrometer. Individual krill were lipid-extracted prior to analyses. The data set also includes latitude, longitude, month, and year of sample collection, standard length of the krill to the nearest mm, age class, sex, and carbon to nitrogen ratios. Details of the data set and all relevant methods are provided in Polito et al., 2013 and Polito et al., 2019.", "east": -54.0, "geometry": ["POINT(-58.5 -62)"], "keywords": "Antarctica; Antarctic Krill; Antarctic Peninsula; Biota; Carbon Isotopes; Isotope Data; Krill; Nitrogen Isotopes; Oceans; Southern Ocean; Stable Isotope Analysis", "locations": "Antarctic Peninsula; Southern Ocean; Antarctica", "north": -60.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Polito, Michael", "project_titles": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators", "projects": [{"proj_uid": "p0010047", "repository": "USAP-DC", "title": "Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.0, "title": "Carbon and nitrogen stable isotope values of Antarctic Krill from the South Shetland Islands and the northern Antarctic Peninsula 2007 and 2009", "uid": "601210", "west": -63.0}, {"awards": "1443680 Smith, Craig", "bounds_geometry": ["POLYGON((-65.561 -64.6538,-65.2471 -64.6538,-64.9332 -64.6538,-64.6193 -64.6538,-64.3054 -64.6538,-63.9915 -64.6538,-63.6776 -64.6538,-63.3637 -64.6538,-63.0498 -64.6538,-62.7359 -64.6538,-62.422 -64.6538,-62.422 -64.67842,-62.422 -64.70304,-62.422 -64.72766,-62.422 -64.75228,-62.422 -64.7769,-62.422 -64.80152,-62.422 -64.82614,-62.422 -64.85076,-62.422 -64.87538,-62.422 -64.9,-62.7359 -64.9,-63.0498 -64.9,-63.3637 -64.9,-63.6776 -64.9,-63.9915 -64.9,-64.3054 -64.9,-64.6193 -64.9,-64.9332 -64.9,-65.2471 -64.9,-65.561 -64.9,-65.561 -64.87538,-65.561 -64.85076,-65.561 -64.82614,-65.561 -64.80152,-65.561 -64.7769,-65.561 -64.75228,-65.561 -64.72766,-65.561 -64.70304,-65.561 -64.67842,-65.561 -64.6538))"], "date_created": "Tue, 16 Jul 2019 00:00:00 GMT", "description": "This dataset includes Pb-210 activities, grain-size distributions, and x-radiograph negatives for cores collected primarily during NBP1603 (and also LMG1510) as part of the FjordEco project in Andvord Bay and surrounding areas (Gerlache Strait, and Station B on the shelf). Data are from subsampled intervals of kasten cores and box cores, as well as one megacore. Samples were x-rayed, sliced, and bagged onboard the vessel. Grain-size and Pb-210 analyses were completed in the Sediment Dynamics Lab within the University of Washington School of Oceanography (PI C. Nittrouer).", "east": -62.422, "geometry": ["POINT(-63.9915 -64.7769)"], "keywords": "Antarctica; Geochronology; Grain Size; LMG1510; NBP1603; Sediment; Sediment Core Data", "locations": "Antarctica", "north": -64.6538, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Eidam, Emily; Nittrouer, Charles; Homolka, Khadijah; Smith, Craig", "project_titles": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)", "projects": [{"proj_uid": "p0010010", "repository": "USAP-DC", "title": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.9, "title": "Andvord Bay sediment core data collected during the FjordEco project (LMG1510 and NBP1603)", "uid": "601193", "west": -65.561}, {"awards": "1543412 Reinfelder, John", "bounds_geometry": ["POLYGON((-69.9043 -65.8708,-69.74203 -65.8708,-69.57976 -65.8708,-69.41749 -65.8708,-69.25522 -65.8708,-69.09295 -65.8708,-68.93068 -65.8708,-68.76841 -65.8708,-68.60614 -65.8708,-68.44387 -65.8708,-68.2816 -65.8708,-68.2816 -66.05698,-68.2816 -66.24316,-68.2816 -66.42934,-68.2816 -66.61552,-68.2816 -66.8017,-68.2816 -66.98788,-68.2816 -67.17406,-68.2816 -67.36024,-68.2816 -67.54642,-68.2816 -67.7326,-68.44387 -67.7326,-68.60614 -67.7326,-68.76841 -67.7326,-68.93068 -67.7326,-69.09295 -67.7326,-69.25522 -67.7326,-69.41749 -67.7326,-69.57976 -67.7326,-69.74203 -67.7326,-69.9043 -67.7326,-69.9043 -67.54642,-69.9043 -67.36024,-69.9043 -67.17406,-69.9043 -66.98788,-69.9043 -66.8017,-69.9043 -66.61552,-69.9043 -66.42934,-69.9043 -66.24316,-69.9043 -66.05698,-69.9043 -65.8708))"], "date_created": "Sun, 31 Mar 2019 00:00:00 GMT", "description": "This dataset includes 16S rRNA gene libraries produced from DNA extracted from pooled digestive tracts of Antarctic krill (Euphausia superba) collected in coastal waters west of the Antarctic Peninsula in 2014.", "east": -68.2816, "geometry": ["POINT(-69.09295 -66.8017)"], "keywords": "Antarctica; Biota; Krill; LTER Palmer Station; Microbiome; Oceans; Southern Ocean", "locations": "Antarctica; Southern Ocean", "north": -65.8708, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Reinfelder, John", "project_titles": "Methylmercury in Antarctic Krill Microbiomes", "projects": [{"proj_uid": "p0010023", "repository": "USAP-DC", "title": "Methylmercury in Antarctic Krill Microbiomes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LTER", "south": -67.7326, "title": "16S rRNA gene libraries of krill gut microbial communities", "uid": "601171", "west": -69.9043}, {"awards": "1245766 Waller, Rhian", "bounds_geometry": ["POLYGON((-66.5 -63,-65.95 -63,-65.4 -63,-64.85 -63,-64.3 -63,-63.75 -63,-63.2 -63,-62.65 -63,-62.1 -63,-61.55 -63,-61 -63,-61 -63.63,-61 -64.26,-61 -64.89,-61 -65.52,-61 -66.15,-61 -66.78,-61 -67.41,-61 -68.04,-61 -68.67,-61 -69.3,-61.55 -69.3,-62.1 -69.3,-62.65 -69.3,-63.2 -69.3,-63.75 -69.3,-64.3 -69.3,-64.85 -69.3,-65.4 -69.3,-65.95 -69.3,-66.5 -69.3,-66.5 -68.67,-66.5 -68.04,-66.5 -67.41,-66.5 -66.78,-66.5 -66.15,-66.5 -65.52,-66.5 -64.89,-66.5 -64.26,-66.5 -63.63,-66.5 -63))"], "date_created": "Thu, 07 Mar 2019 00:00:00 GMT", "description": "Station location information of trawl and CTD stations used for collecting coral samples and water for incubation during expedition NBP1509 in 2015 near the Antarctic Peninsula.", "east": -61.0, "geometry": ["POINT(-63.75 -66.15)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Corals; CTD; LMG1509; Oceans; Otter Trawl; R/v Laurence M. Gould; Sample/collection Description; Sample/Collection Description; Sample Location; Southern Ocean", "locations": "Southern Ocean; Antarctic Peninsula; Antarctica", "north": -63.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Waller, Rhian", "project_titles": "Cold Corals in Hot Water - Investigating the Physiological Responses of Antarctic Coral Larvae to Climate change Stress", "projects": [{"proj_uid": "p0010017", "repository": "USAP-DC", "title": "Cold Corals in Hot Water - Investigating the Physiological Responses of Antarctic Coral Larvae to Climate change Stress"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -69.3, "title": "Log Sheets of coral samples for LMG1509", "uid": "601160", "west": -66.5}, {"awards": "1341333 McClintock, James", "bounds_geometry": ["POLYGON((-65 -63,-64.8 -63,-64.6 -63,-64.4 -63,-64.2 -63,-64 -63,-63.8 -63,-63.6 -63,-63.4 -63,-63.2 -63,-63 -63,-63 -63.2,-63 -63.4,-63 -63.6,-63 -63.8,-63 -64,-63 -64.2,-63 -64.4,-63 -64.6,-63 -64.8,-63 -65,-63.2 -65,-63.4 -65,-63.6 -65,-63.8 -65,-64 -65,-64.2 -65,-64.4 -65,-64.6 -65,-64.8 -65,-65 -65,-65 -64.8,-65 -64.6,-65 -64.4,-65 -64.2,-65 -64,-65 -63.8,-65 -63.6,-65 -63.4,-65 -63.2,-65 -63))"], "date_created": "Mon, 04 Mar 2019 00:00:00 GMT", "description": "These three spreadsheets contain all the data used in Amsler et al. 2019. Impacts of macroalgal-associated gastropods on epiphytic microalgae on the ecologically important Antarctic brown alga Himantothallus grandifolius. Antarctic Science 31: doi:10.1017/S0954102019000014", "east": -63.0, "geometry": ["POINT(-64 -64)"], "keywords": "Antarctica; Benthic; Biota; Macroalgae; Mesograzer; Microscopy; Oceans; Zooplankton", "locations": "Antarctica", "north": -63.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Data from Amsler et al. 2019 Antarctic Science, doi:10.1017/S0954102019000014", "uid": "601159", "west": -65.0}, {"awards": "1443705 Vernet, Maria", "bounds_geometry": ["POLYGON((-63.3 -64.5,-63.17 -64.5,-63.04 -64.5,-62.91 -64.5,-62.78 -64.5,-62.65 -64.5,-62.52 -64.5,-62.39 -64.5,-62.26 -64.5,-62.13 -64.5,-62 -64.5,-62 -64.545,-62 -64.59,-62 -64.635,-62 -64.68,-62 -64.725,-62 -64.77,-62 -64.815,-62 -64.86,-62 -64.905,-62 -64.95,-62.13 -64.95,-62.26 -64.95,-62.39 -64.95,-62.52 -64.95,-62.65 -64.95,-62.78 -64.95,-62.91 -64.95,-63.04 -64.95,-63.17 -64.95,-63.3 -64.95,-63.3 -64.905,-63.3 -64.86,-63.3 -64.815,-63.3 -64.77,-63.3 -64.725,-63.3 -64.68,-63.3 -64.635,-63.3 -64.59,-63.3 -64.545,-63.3 -64.5))"], "date_created": "Wed, 27 Feb 2019 00:00:00 GMT", "description": "Phytoplankton ecology dataset from the FjordEco Project (PLR-1443705)", "east": -62.0, "geometry": ["POINT(-62.65 -64.725)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Ecology; Fjord; Phytoplankton", "locations": "Antarctic Peninsula; Antarctica; Antarctica", "north": -64.5, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Vernet, Maria; Pan, B. Jack; Manck, Lauren; Forsch, Kiefer", "project_titles": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)", "projects": [{"proj_uid": "p0010010", "repository": "USAP-DC", "title": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "FjordEco", "south": -64.95, "title": "FjordEco Phytoplankton Ecology Dataset in Andvord Bay", "uid": "601158", "west": -63.3}, {"awards": "1443680 Smith, Craig", "bounds_geometry": ["POLYGON((-65 -64,-64.7 -64,-64.4 -64,-64.1 -64,-63.8 -64,-63.5 -64,-63.2 -64,-62.9 -64,-62.6 -64,-62.3 -64,-62 -64,-62 -64.1,-62 -64.2,-62 -64.3,-62 -64.4,-62 -64.5,-62 -64.6,-62 -64.7,-62 -64.8,-62 -64.9,-62 -65,-62.3 -65,-62.6 -65,-62.9 -65,-63.2 -65,-63.5 -65,-63.8 -65,-64.1 -65,-64.4 -65,-64.7 -65,-65 -65,-65 -64.9,-65 -64.8,-65 -64.7,-65 -64.6,-65 -64.5,-65 -64.4,-65 -64.3,-65 -64.2,-65 -64.1,-65 -64))"], "date_created": "Wed, 13 Feb 2019 00:00:00 GMT", "description": "Sediment organic carbon and organic nitrogen content (percent mass) in 6 depth intervals (0-1cm, 1-2cm, 3-4cm, 5-6cm, 7-8cm , 9-10cm) in sediment cores collected by OSIL Megacore (10 cm diameter tubes) along the five-station FjordEco Transect from inner Andvord Bay to the open continental shelf at FOODBANCS Station B. \r\n", "east": -62.0, "geometry": ["POINT(-63.5 -64.5)"], "keywords": "Antarctica; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Snow/ice; Snow/Ice", "locations": "Antarctica", "north": -64.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Smith, Craig", "project_titles": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)", "projects": [{"proj_uid": "p0010010", "repository": "USAP-DC", "title": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "FjordEco", "south": -65.0, "title": "Fjord-Eco_Sediment_OrgC_OrgN_Data - Craig Smith", "uid": "601157", "west": -65.0}, {"awards": "1443733 Winsor, Peter", "bounds_geometry": ["POLYGON((-62.68 -64.72,-62.648 -64.72,-62.616 -64.72,-62.584 -64.72,-62.552 -64.72,-62.52 -64.72,-62.488 -64.72,-62.456 -64.72,-62.424 -64.72,-62.392 -64.72,-62.36 -64.72,-62.36 -64.74,-62.36 -64.76,-62.36 -64.78,-62.36 -64.8,-62.36 -64.82,-62.36 -64.84,-62.36 -64.86,-62.36 -64.88,-62.36 -64.9,-62.36 -64.92,-62.392 -64.92,-62.424 -64.92,-62.456 -64.92,-62.488 -64.92,-62.52 -64.92,-62.552 -64.92,-62.584 -64.92,-62.616 -64.92,-62.648 -64.92,-62.68 -64.92,-62.68 -64.9,-62.68 -64.88,-62.68 -64.86,-62.68 -64.84,-62.68 -64.82,-62.68 -64.8,-62.68 -64.78,-62.68 -64.76,-62.68 -64.74,-62.68 -64.72))"], "date_created": "Tue, 07 Aug 2018 00:00:00 GMT", "description": "This dataset includes timelapse images from five cameras set up at four different locations in and just outside of Andvord Bay on the Western Antarctic Peninsula. The cameras were set up to track glacier ice motion, calving and tracking of ice bergs, and sea ice formation and melt. Two cameras (hi-res) were Canon Rebel DSLR in a timelapse system designed by Harbortronics; the remaining three cameras (lo-res) were from Campbell Scientific and were part of a weather station.", "east": -62.36, "geometry": ["POINT(-62.52 -64.82)"], "keywords": "Antarctica; Antarctic Peninsula; Glaciers/ice Sheet; Glaciers/Ice Sheet; Iceberg; Photo; Photo/video; Photo/Video", "locations": "Antarctic Peninsula; Antarctica", "north": -64.72, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Organisms and Ecosystems", "persons": "Truffer, Martin; Winsor, Peter", "project_titles": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)", "projects": [{"proj_uid": "p0010010", "repository": "USAP-DC", "title": "Collaborative Research: Fjord Ecosystem Structure and Function on the West Antarctic Peninsula - Hotspots of Productivity and Biodiversity? (FjordEco)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "FjordEco", "south": -64.92, "title": "Andvord Bay Glacier Timelapse", "uid": "601111", "west": -62.68}, {"awards": "1141877 Aronson, Richard", "bounds_geometry": null, "date_created": "Fri, 27 Jul 2018 00:00:00 GMT", "description": "This data set includes measurements of the percent calcium, thickness, and microhardness of the exoskeleton in Paralomis birsteini, Cancer borealis, and Callinectes sapidus. Measurements were taken in the carapace, major chela, and minor chela of each crab. Paralomis birsteini were trapped at ~1350 m depth off Marguerite Bay, western Antarctic Peninsula in 2015. Cancer borealis were trapped in the Gulf of Maine, USA at ~50 m depth, and Callinectes sapidus were trapped in Florida, USA at depths shallower than 30 m. ", "east": null, "geometry": null, "keywords": "Antarctica; Biota; Callinectes; Exoskeleton; Fish; Glaciers/ice Sheet; Glaciers/Ice Sheet; Paralomis", "locations": "Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Steffel, Brittan", "project_titles": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos", "projects": [{"proj_uid": "p0000303", "repository": "USAP-DC", "title": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Material properties of the exoskeleton of Paralomis birsteini", "uid": "601109", "west": null}, {"awards": "1565576 Pettit, Erin", "bounds_geometry": ["POLYGON((-63 -64.75,-62.6 -64.75,-62.2 -64.75,-61.8 -64.75,-61.4 -64.75,-61 -64.75,-60.6 -64.75,-60.2 -64.75,-59.8 -64.75,-59.4 -64.75,-59 -64.75,-59 -64.9,-59 -65.05,-59 -65.2,-59 -65.35,-59 -65.5,-59 -65.65,-59 -65.8,-59 -65.95,-59 -66.1,-59 -66.25,-59.4 -66.25,-59.8 -66.25,-60.2 -66.25,-60.6 -66.25,-61 -66.25,-61.4 -66.25,-61.8 -66.25,-62.2 -66.25,-62.6 -66.25,-63 -66.25,-63 -66.1,-63 -65.95,-63 -65.8,-63 -65.65,-63 -65.5,-63 -65.35,-63 -65.2,-63 -65.05,-63 -64.9,-63 -64.75))"], "date_created": "Tue, 13 Feb 2018 00:00:00 GMT", "description": "Weather and instrument data from the Automated Meterology Ice Geophysics Observation System (AMIGOS) stations installed as part of the LARISSA and RAPID Scar Inlet funded grants from NSF-PLR. The data include temperature, wind, pressure, humidity, station position (coarse), and station health.", "east": -59.0, "geometry": ["POINT(-61 -65.5)"], "keywords": "Antarctica; Antarctic Peninsula; Atmosphere; Automated Weather Station; Flask Glacier; Foehn Winds; Glaciers/ice Sheet; Glaciers/Ice Sheet; LARISSA; Larsen B Ice Shelf; Meteorology; Scar Inlet; Weatherstation; Wind Speed", "locations": "Antarctica; Antarctic Peninsula; Larsen B Ice Shelf; Scar Inlet; Flask Glacier", "north": -64.75, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Glaciology", "persons": "Scambos, Ted", "project_titles": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf", "projects": [{"proj_uid": "p0000274", "repository": "USAP-DC", "title": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -66.25, "title": "Weather data from LARISSA / SCAR Inlet Rapid AMIGOS and cGPS stations", "uid": "601084", "west": -63.0}, {"awards": "1341669 DeMaster, David", "bounds_geometry": ["POLYGON((-70 -62,-68.8 -62,-67.6 -62,-66.4 -62,-65.2 -62,-64 -62,-62.8 -62,-61.6 -62,-60.4 -62,-59.2 -62,-58 -62,-58 -62.6,-58 -63.2,-58 -63.8,-58 -64.4,-58 -65,-58 -65.6,-58 -66.2,-58 -66.8,-58 -67.4,-58 -68,-59.2 -68,-60.4 -68,-61.6 -68,-62.8 -68,-64 -68,-65.2 -68,-66.4 -68,-67.6 -68,-68.8 -68,-70 -68,-70 -67.4,-70 -66.8,-70 -66.2,-70 -65.6,-70 -65,-70 -64.4,-70 -63.8,-70 -63.2,-70 -62.6,-70 -62))"], "date_created": "Sat, 03 Feb 2018 00:00:00 GMT", "description": "This file has C-14 data from the organic matter fraction of Antarctic marine sediments, collected from the collapsed Larsen Ice Shelf and the West Antarctic Peninsula", "east": -58.0, "geometry": ["POINT(-64 -65)"], "keywords": null, "locations": null, "north": -62.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "DeMaster, David", "project_titles": "Using Radiochemical Data from Collapsed Ice Shelf Sediments to Understand the Nature and Timing of the Benthic Response to High-Latitude Climate Change", "projects": [{"proj_uid": "p0000382", "repository": "USAP-DC", "title": "Using Radiochemical Data from Collapsed Ice Shelf Sediments to Understand the Nature and Timing of the Benthic Response to High-Latitude Climate Change"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -68.0, "title": "DeMaster Compiled Larsen Ice Shelf and the West Antarctic Peninsula C14 Data", "uid": "601082", "west": -70.0}, {"awards": "1565576 Pettit, Erin", "bounds_geometry": ["POLYGON((-62.2 -65.5,-62.12 -65.5,-62.04 -65.5,-61.96 -65.5,-61.88 -65.5,-61.8 -65.5,-61.72 -65.5,-61.64 -65.5,-61.56 -65.5,-61.48 -65.5,-61.4 -65.5,-61.4 -65.53,-61.4 -65.56,-61.4 -65.59,-61.4 -65.62,-61.4 -65.65,-61.4 -65.68,-61.4 -65.71,-61.4 -65.74,-61.4 -65.77,-61.4 -65.8,-61.48 -65.8,-61.56 -65.8,-61.64 -65.8,-61.72 -65.8,-61.8 -65.8,-61.88 -65.8,-61.96 -65.8,-62.04 -65.8,-62.12 -65.8,-62.2 -65.8,-62.2 -65.77,-62.2 -65.74,-62.2 -65.71,-62.2 -65.68,-62.2 -65.65,-62.2 -65.62,-62.2 -65.59,-62.2 -65.56,-62.2 -65.53,-62.2 -65.5))"], "date_created": "Wed, 20 Dec 2017 00:00:00 GMT", "description": "A terrestrial radar interferometer was set up at a location overlooking a remnant of the Larsen B iceshelf and the adjacent fast ice. Images were acquired every 4 minutes with a Gamma Portable Radar Interferometer - 2. Data include images from two antennas, to allow the generation of interferometric DEMs, as well as line-of-sight displacement fields between consecutive images. The archived data are single-look complex (SLC) images, together with parameter files.", "east": -61.4, "geometry": ["POINT(-61.8 -65.65)"], "keywords": "Antarctica; Antarctic Peninsula; Elevation; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Navigation; Radar; Radar Interferometer", "locations": "Antarctica; Antarctic Peninsula", "north": -65.5, "nsf_funding_programs": "Antarctic Integrated System Science; Antarctic Glaciology", "persons": "Truffer, Martin", "project_titles": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf", "projects": [{"proj_uid": "p0000274", "repository": "USAP-DC", "title": "RAPID: Observing the Disintegration of the Scar Inlet Ice Shelf"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.8, "title": "Scar Inlet Terrestrial Radar Interferometry", "uid": "601078", "west": -62.2}, {"awards": "0732917 McCormick, Michael", "bounds_geometry": ["POLYGON((299.4 -63.1,299.92 -63.1,300.44 -63.1,300.96 -63.1,301.48 -63.1,302 -63.1,302.52 -63.1,303.04 -63.1,303.56 -63.1,304.08 -63.1,304.6 -63.1,304.6 -63.29,304.6 -63.48,304.6 -63.67,304.6 -63.86,304.6 -64.05,304.6 -64.24,304.6 -64.43,304.6 -64.62,304.6 -64.81,304.6 -65,304.08 -65,303.56 -65,303.04 -65,302.52 -65,302 -65,301.48 -65,300.96 -65,300.44 -65,299.92 -65,299.4 -65,299.4 -64.81,299.4 -64.62,299.4 -64.43,299.4 -64.24,299.4 -64.05,299.4 -63.86,299.4 -63.67,299.4 -63.48,299.4 -63.29,299.4 -63.1))"], "date_created": "Sun, 17 Dec 2017 00:00:00 GMT", "description": "Ice-shelf loss along the east coast of the Antarctic Peninsula over recent decades has brought new sources of carbon and energy to the marine benthos likely affecting sediment geochemistry and microbial community composition. To better understand the long-term effects of ice-shelf loss on benthic microbial communities, we conducted a five-station survey along a 160 km transect following the historic path of retreat of the Larsen A ice shelf. All microbial community sequence data is publicly available through the Metagenomics Analysis Server at Argonne National Laboratory (MG-RAST). The project title is \"Impact of ice-shelf loss on geochemical profiles and microbial community composition in marine sediments of the Larsen A embayment, Antarctic Peninsula\". A key word search using terms from this title at the MG-RAST portal (http://metagenomics.anl.gov/) will return the complete sample list. This submitted dataset summarizes the measured environmental parameters for these same samples (lat., long., water depth, sediment depth, pH, alkalinity, dissolved oxygen, silicate, phosphate, nitrate, nitrite, and ammonium).", "east": 304.6, "geometry": ["POINT(-58 -64.05)"], "keywords": "Antarctica; Antarctic Peninsula; Chemistry:ice; Chemistry:Ice; Geochemistry; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Ice Core Records; LARISSA; Microbiology", "locations": "Antarctic Peninsula; Antarctica", "north": -63.1, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "McCormick, Michael", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems.", "projects": [{"proj_uid": "p0010135", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems."}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "LARISSA: Impact of ice-shelf loss on geochemical profiles and microbial community composition in marine sediments of the Larsen A embayment, Antarctic Peninsula", "uid": "601073", "west": 299.4}, {"awards": "1246378 Shevenell, Amelia", "bounds_geometry": ["POLYGON((-65.32 -64.15,-65.309 -64.15,-65.298 -64.15,-65.287 -64.15,-65.276 -64.15,-65.265 -64.15,-65.254 -64.15,-65.243 -64.15,-65.232 -64.15,-65.221 -64.15,-65.21 -64.15,-65.21 -64.186,-65.21 -64.222,-65.21 -64.258,-65.21 -64.294,-65.21 -64.33,-65.21 -64.366,-65.21 -64.402,-65.21 -64.438,-65.21 -64.474,-65.21 -64.51,-65.221 -64.51,-65.232 -64.51,-65.243 -64.51,-65.254 -64.51,-65.265 -64.51,-65.276 -64.51,-65.287 -64.51,-65.298 -64.51,-65.309 -64.51,-65.32 -64.51,-65.32 -64.474,-65.32 -64.438,-65.32 -64.402,-65.32 -64.366,-65.32 -64.33,-65.32 -64.294,-65.32 -64.258,-65.32 -64.222,-65.32 -64.186,-65.32 -64.15))"], "date_created": "Wed, 25 Oct 2017 00:00:00 GMT", "description": "These are unpublished stable isotope data from a series of sediment cores collected during LMG12-11 and LMG13-11 down the axis of Anvers Trough. These records span the LMG to recent.", "east": -65.21, "geometry": ["POINT(-65.265 -64.33)"], "keywords": "Antarctica; Antarctic Peninsula; Anvers Trough; Chemistry:sediment; Chemistry:Sediment; Foraminifera; Geochemistry; Isotope; LMG1211; LMG1311; Marine Sediments; Oceans; Paleoclimate; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Anvers Trough; Southern Ocean; Antarctic Peninsula; Antarctica", "north": -64.15, "nsf_funding_programs": "Antarctic Integrated System Science", "persons": "Shevenell, Amelia", "project_titles": "Late Quaternary Evolution of the Lambert Glacier/Amery Ice Shelf System, Prydz Bay, Antarctica", "projects": [{"proj_uid": "p0000381", "repository": "USAP-DC", "title": "Late Quaternary Evolution of the Lambert Glacier/Amery Ice Shelf System, Prydz Bay, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.51, "title": "Anvers Trough Foraminifer Stable Isotope data", "uid": "601064", "west": -65.32}, {"awards": "1041022 McClintock, James", "bounds_geometry": ["POLYGON((-64.5 -64.5,-64.45 -64.5,-64.4 -64.5,-64.35 -64.5,-64.3 -64.5,-64.25 -64.5,-64.2 -64.5,-64.15 -64.5,-64.1 -64.5,-64.05 -64.5,-64 -64.5,-64 -64.54,-64 -64.58,-64 -64.62,-64 -64.66,-64 -64.7,-64 -64.74,-64 -64.78,-64 -64.82,-64 -64.86,-64 -64.9,-64.05 -64.9,-64.1 -64.9,-64.15 -64.9,-64.2 -64.9,-64.25 -64.9,-64.3 -64.9,-64.35 -64.9,-64.4 -64.9,-64.45 -64.9,-64.5 -64.9,-64.5 -64.86,-64.5 -64.82,-64.5 -64.78,-64.5 -64.74,-64.5 -64.7,-64.5 -64.66,-64.5 -64.62,-64.5 -64.58,-64.5 -64.54,-64.5 -64.5))"], "date_created": "Fri, 20 Oct 2017 00:00:00 GMT", "description": "", "east": -64.0, "geometry": ["POINT(-64.25 -64.7)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Chemistry:fluid; Chemistry:Fluid; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Antarctic Peninsula; Antarctica; Southern Ocean", "north": -64.5, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Amsler, Charles; Schram, Julie", "project_titles": "The effects of ocean acidification and rising sea surface temperatures on shallow-water benthic organisms in Antarctica", "projects": [{"proj_uid": "p0000426", "repository": "USAP-DC", "title": "The effects of ocean acidification and rising sea surface temperatures on shallow-water benthic organisms in Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.9, "title": "Data from Schram et al. 2017 MEPS", "uid": "601062", "west": -64.5}, {"awards": "1142002 Kaplan, Michael", "bounds_geometry": ["POLYGON((-58 -63.7,-57.95 -63.7,-57.9 -63.7,-57.85 -63.7,-57.8 -63.7,-57.75 -63.7,-57.7 -63.7,-57.65 -63.7,-57.6 -63.7,-57.55 -63.7,-57.5 -63.7,-57.5 -63.73,-57.5 -63.76,-57.5 -63.79,-57.5 -63.82,-57.5 -63.85,-57.5 -63.88,-57.5 -63.91,-57.5 -63.94,-57.5 -63.97,-57.5 -64,-57.55 -64,-57.6 -64,-57.65 -64,-57.7 -64,-57.75 -64,-57.8 -64,-57.85 -64,-57.9 -64,-57.95 -64,-58 -64,-58 -63.97,-58 -63.94,-58 -63.91,-58 -63.88,-58 -63.85,-58 -63.82,-58 -63.79,-58 -63.76,-58 -63.73,-58 -63.7))"], "date_created": "Sat, 16 Sep 2017 00:00:00 GMT", "description": "These are data sets obtained with the supported award. The ages concern the histories of glaciers, ice sheets, and general cryospheric and climatic activities of the northern Antarctic Peninsula and surrounding area.They cover periods from prior to the last global glacial maximum (stage 3 and older?) as well as since deglaciation.", "east": -57.5, "geometry": ["POINT(-57.75 -63.85)"], "keywords": "Antarctica; Antarctic Peninsula; Glaciers/ice Sheet; Glaciers/Ice Sheet; GPS; James Ross Island; Sample/collection Description; Sample/Collection Description; Solid Earth", "locations": "James Ross Island; Antarctic Peninsula; Antarctica", "north": -63.7, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Kaplan, Michael", "project_titles": "Terrestrial Geological Context for Glacier Change in the Northeast Antarctica Peninsula", "projects": [{"proj_uid": "p0000337", "repository": "USAP-DC", "title": "Terrestrial Geological Context for Glacier Change in the Northeast Antarctica Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.0, "title": "10Be and 14C data from northern Antarctic Peninsula", "uid": "601051", "west": -58.0}, {"awards": "0732946 Steffen, Konrad", "bounds_geometry": ["POLYGON((-66 -66,-65.4 -66,-64.8 -66,-64.2 -66,-63.6 -66,-63 -66,-62.4 -66,-61.8 -66,-61.2 -66,-60.6 -66,-60 -66,-60 -66.4,-60 -66.8,-60 -67.2,-60 -67.6,-60 -68,-60 -68.4,-60 -68.8,-60 -69.2,-60 -69.6,-60 -70,-60.6 -70,-61.2 -70,-61.8 -70,-62.4 -70,-63 -70,-63.6 -70,-64.2 -70,-64.8 -70,-65.4 -70,-66 -70,-66 -69.6,-66 -69.2,-66 -68.8,-66 -68.4,-66 -68,-66 -67.6,-66 -67.2,-66 -66.8,-66 -66.4,-66 -66))"], "date_created": "Wed, 13 Sep 2017 00:00:00 GMT", "description": "We produce a reconstruction of surface mass balance (SMB) (in mm w.e. per year) by adjusting the 1979-2014 RACMO2 SMB to the spatial pattern of ground-penetrating radar observations and to observations of SMB from sonic height rangers.", "east": -60.0, "geometry": ["POINT(-63 -68)"], "keywords": "Antarctica; Antarctic Peninsula; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; GPR; Larsen C Ice Shelf; Radar", "locations": "Antarctica; Larsen C Ice Shelf; Antarctic Peninsula", "north": -66.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "McGrath, Daniel; Steffen, Konrad; Kuipers Munneke, Peter", "project_titles": "IPY: Stability of Larsen C Ice Shelf in a Warming Climate", "projects": [{"proj_uid": "p0000087", "repository": "USAP-DC", "title": "IPY: Stability of Larsen C Ice Shelf in a Warming Climate"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "Mean surface mass balance over Larsen C ice shelf, Antarctica (1979-2014), assimilated to in situ GPR and snow height data", "uid": "601056", "west": -66.0}, {"awards": "1246190 Yu, Zicheng", "bounds_geometry": ["POLYGON((-68.5 -64,-67.73 -64,-66.96 -64,-66.19 -64,-65.42 -64,-64.65 -64,-63.88 -64,-63.11 -64,-62.34 -64,-61.57 -64,-60.8 -64,-60.8 -64.36,-60.8 -64.72,-60.8 -65.08,-60.8 -65.44,-60.8 -65.8,-60.8 -66.16,-60.8 -66.52,-60.8 -66.88,-60.8 -67.24,-60.8 -67.6,-61.57 -67.6,-62.34 -67.6,-63.11 -67.6,-63.88 -67.6,-64.65 -67.6,-65.42 -67.6,-66.19 -67.6,-66.96 -67.6,-67.73 -67.6,-68.5 -67.6,-68.5 -67.24,-68.5 -66.88,-68.5 -66.52,-68.5 -66.16,-68.5 -65.8,-68.5 -65.44,-68.5 -65.08,-68.5 -64.72,-68.5 -64.36,-68.5 -64))"], "date_created": "Mon, 24 Jul 2017 00:00:00 GMT", "description": "We used subfossil mosses and peats to document changes in regional climate, cryosphere, and terrestrial ecosystems in the western Antarctic Peninsula at ~65S latitude. We find that most peat-forming ecosystems have initiated since 2800 cal BP, in response to warmer summers and increasing summer insolation. The period at 900-600 cal BP was coldest as indicated by ice advance, abundance of kill ages from ice-entombed mosses exposed recently from retreating glacial ice, and apparent gap in peatbank initiation. Furthermore, the discovery of a novel Antarctic hairgrass (Deschampsia antarctica) peatland at 2300-1200 cal BP from the mainland Antarctic Peninsula suggests a much warmer climate than the present. A warming and wetting climate in the 1980s caused very high carbon accumulation in a Polytrichum strictum moss peatbank. Our results document dramatic transformations of landscape and ecosystems in response to past warmer climate, providing a telltale sign for what may come in the future.", "east": -60.8, "geometry": ["POINT(-64.65 -65.8)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Moss; Paleoclimate; Sample/collection Description; Sample/Collection Description", "locations": "Antarctic Peninsula; Antarctica", "north": -64.0, "nsf_funding_programs": null, "persons": "Yu, Zicheng", "project_titles": "Collaborative Research: Response of Carbon Accumulation in Moss Peatbanks to Past Warm Climates in the Antarctic Peninsula", "projects": [{"proj_uid": "p0000341", "repository": "USAP-DC", "title": "Collaborative Research: Response of Carbon Accumulation in Moss Peatbanks to Past Warm Climates in the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -67.6, "title": "Late Holocene paleoecological and paleoclimatic data from moss peatbanks in the western Antarctic Peninsula", "uid": "601037", "west": -68.5}, {"awards": "1141993 Rich, Jeremy", "bounds_geometry": ["POINT(-64.05 -64.77)"], "date_created": "Mon, 12 Jun 2017 00:00:00 GMT", "description": "From winter to late summer during the 2013-2014 season at Palmer Station, Antarctica, we collected weekly to bi-weekly samples of the seawater intake to measure changes in bacterial community composition, based on sequencing 16S rRNA genes. Along with the sequences, we collected data on environmental parameters in the samples (chlorophyll a, bacterial production, salinity, nutrients, bacterial cell numbers, and particulate organic carbon and nitrogen).", "east": -64.05, "geometry": ["POINT(-64.05 -64.77)"], "keywords": "Antarctica; Antarctic Peninsula; Bacteria; Biota; Genetic; Geochemistry; Palmer Station; Sample/collection Description; Sample/Collection Description; Sea Water; Southern Ocean", "locations": "Antarctic Peninsula; Antarctica; Palmer Station; Southern Ocean", "north": -64.77, "nsf_funding_programs": null, "persons": "Rich, Jeremy", "project_titles": "Collaborative Research: Microbial Community Assembly in Coastal Waters of the Western Antarctic Peninsula", "projects": [{"proj_uid": "p0000409", "repository": "USAP-DC", "title": "Collaborative Research: Microbial Community Assembly in Coastal Waters of the Western Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.77, "title": "Seasonal Succession of Bacterial Communities in Coastal Waters of the Western Antarctic Peninsula", "uid": "601032", "west": -64.05}, {"awards": "1141877 Aronson, Richard", "bounds_geometry": null, "date_created": "Tue, 10 Jan 2017 00:00:00 GMT", "description": "Elevated temperatures and ocean acidification are both threatening the Southern Ocean. The effects of these environmental changes are poorly understood, but preliminary data suggest that they are driving a biological invasion. Specifically, large populations of skeleton-crushing king crabs, Paralomis birsteini, have been detected off Marguerite Bay on the West Antarctic Peninsula. These crabs appear to be invading the continental shelf region where benthic communities have evolved in the absence of such top-predators. Thus, this invasion could result in a wholesale restructuring of the Antarctic benthic ecosystem. The proposed work seeks to document this invasion and better understand the effects of the introduction of P. birsteini on the ecology of this region. A towed underwater vehicle will be used to photographically image communities, and communities with and without P. birsteini will be compared quantitatively. Additionally, crabs will trapped and various aspects of their morphology and physiology will be assessed. This research is unique in that it will document a biological invasion in real-time and it will therefore enhance our general understandings of the drivers of invasion and resilience in biological communities. Results will be widely disseminated through publications as well as through presentations at national and international meetings. In addition, raw data will be made available through open-access databases. This project will support the research and training of undergraduate and graduate students and will foster an international collaboration with British scientists. Researchers on this project will participate in outreach thorough the development of K-12 curricular materials.", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Anvers Island; Benthos; Biota; Camera Tow; LMG1502; Marguerite Bay; NBP1002; NBP1310; Oceans; Photo/video; Photo/Video; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Anvers Island; Southern Ocean; Antarctica; Antarctic Peninsula; Marguerite Bay", "north": null, "nsf_funding_programs": null, "persons": "Aronson, Richard", "project_titles": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos", "projects": [{"proj_uid": "p0000303", "repository": "USAP-DC", "title": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Climate Change and Predatory Invasion of the Antarctic Benthos", "uid": "600385", "west": null}, {"awards": "1043781 O\u0027Brien, Kristin", "bounds_geometry": null, "date_created": "Tue, 06 Dec 2016 00:00:00 GMT", "description": null, "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Biota; Fish; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Southern Ocean; Antarctica; Antarctic Peninsula", "north": null, "nsf_funding_programs": null, "persons": "O\u0027Brien, Kristin", "project_titles": "Collaborative research: Redox Balance in Antarctic Notothenioid fishes: Do Icefishes have an Advantage?", "projects": [{"proj_uid": "p0000320", "repository": "USAP-DC", "title": "Collaborative research: Redox Balance in Antarctic Notothenioid fishes: Do Icefishes have an Advantage?"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Redox Balance in Antarctic Notothenioid Fishes", "uid": "600382", "west": null}, {"awards": "1043649 Hock, Regine", "bounds_geometry": ["POINT(-61 -62.75)", "POINT(-57.5 -61.75)"], "date_created": "Wed, 17 Feb 2016 00:00:00 GMT", "description": "The data contain the time series totals of SAR derived detrended surface velocities from Livingston Island, as well as GeoTiff files generated from intensity tracking of Synthetic Aperture Radar (SAR) imagery. The images include average annual velocity and ice thickness of King George Island, and average annual velocity, ice thickness, and a digital elevation model of Livingston Island.", "east": -57.5, "geometry": ["POINT(-61 -62.75)", "POINT(-57.5 -61.75)"], "keywords": "Antarctica; Antarctic Peninsula; Digital Elevation Model; Geology/Geophysics - Other; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Ice Thickness; Ice Velocity", "locations": "Antarctic Peninsula; Antarctica", "north": -61.75, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Osmanoglu, Batuhan; Hock, Regine", "project_titles": "Contribution of Western Antarctic Peninsula glaciers to sea level rise: Separation of the dynamic and climatic components", "projects": [{"proj_uid": "p0000054", "repository": "USAP-DC", "title": "Contribution of Western Antarctic Peninsula glaciers to sea level rise: Separation of the dynamic and climatic components"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -62.75, "title": "King George and Livingston Islands: Velocities and Digital Elevation Model", "uid": "609667", "west": -61.0}, {"awards": "1141877 Aronson, Richard", "bounds_geometry": ["POLYGON((-111.18 -49.98,-105.429 -49.98,-99.678 -49.98,-93.927 -49.98,-88.176 -49.98,-82.425 -49.98,-76.674 -49.98,-70.923 -49.98,-65.172 -49.98,-59.421 -49.98,-53.67 -49.98,-53.67 -52.826,-53.67 -55.672,-53.67 -58.518,-53.67 -61.364,-53.67 -64.21,-53.67 -67.056,-53.67 -69.902,-53.67 -72.748,-53.67 -75.594,-53.67 -78.44,-59.421 -78.44,-65.172 -78.44,-70.923 -78.44,-76.674 -78.44,-82.425 -78.44,-88.176 -78.44,-93.927 -78.44,-99.678 -78.44,-105.429 -78.44,-111.18 -78.44,-111.18 -75.594,-111.18 -72.748,-111.18 -69.902,-111.18 -67.056,-111.18 -64.21,-111.18 -61.364,-111.18 -58.518,-111.18 -55.672,-111.18 -52.826,-111.18 -49.98))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "Elevated temperatures and ocean acidification are both threatening the Southern Ocean. The effects of these environmental changes are poorly understood, but preliminary data suggest that they are driving a biological invasion. Specifically, large populations of skeleton-crushing king crabs, Paralomis birsteini, have been detected off Marguerite Bay on the West Antarctic Peninsula. These crabs appear to be invading the continental shelf region where benthic communities have evolved in the absence of such top-predators. Thus, this invasion could result in a wholesale restructuring of the Antarctic benthic ecosystem. The proposed work seeks to document this invasion and better understand the effects of the introduction of P. birsteini on the ecology of this region. A towed underwater vehicle will be used to photographically image communities, and communities with and without P. birsteini will be compared quantitatively. Additionally, crabs will trapped and various aspects of their morphology and physiology will be assessed. This research is unique in that it will document a biological invasion in real-time and it will therefore enhance our general understandings of the drivers of invasion and resilience in biological communities. Results will be widely disseminated through publications as well as through presentations at national and international meetings. In addition, raw data will be made available through open-access databases. This project will support the research and training of undergraduate and graduate students and will foster an international collaboration with British scientists. Researchers on this project will participate in outreach thorough the development of K-12 curricular materials.", "east": -53.67, "geometry": ["POINT(-82.425 -64.21)"], "keywords": "Antarctica; Antarctic Peninsula; Anvers Island; Benthos; Biota; Camera Tow; LMG1502; Marguerite Bay; NBP1002; NBP1310; Oceans; Photo/video; Photo/Video; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Antarctica; Antarctic Peninsula; Marguerite Bay; Anvers Island; Southern Ocean", "north": -49.98, "nsf_funding_programs": null, "persons": "Aronson, Richard", "project_titles": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos", "projects": [{"proj_uid": "p0000303", "repository": "USAP-DC", "title": "Collaborative Research: Climate Change and Predatory Invasion of the Antarctic Benthos"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.44, "title": "Climate Change and Predatory Invasion of the Antarctic Benthos", "uid": "600171", "west": -111.18}, {"awards": "1250208 Friedlaender, Ari", "bounds_geometry": ["POLYGON((-80 -63,-78 -63,-76 -63,-74 -63,-72 -63,-70 -63,-68 -63,-66 -63,-64 -63,-62 -63,-60 -63,-60 -63.7,-60 -64.4,-60 -65.1,-60 -65.8,-60 -66.5,-60 -67.2,-60 -67.9,-60 -68.6,-60 -69.3,-60 -70,-62 -70,-64 -70,-66 -70,-68 -70,-70 -70,-72 -70,-74 -70,-76 -70,-78 -70,-80 -70,-80 -69.3,-80 -68.6,-80 -67.9,-80 -67.2,-80 -66.5,-80 -65.8,-80 -65.1,-80 -64.4,-80 -63.7,-80 -63))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "Whales play a central role in the ecology and biogeochemistry of the Southern Ocean. However, little is known regarding their distribution and behavior, in part because of challenges associated with studying these organisms from large research vessels. This research will take advantage of the unique opportunity presented by the 2012-2013 test run of the smaller, more mobile R/V Point Sur. This work will use the Point Sur to investigate humpback whales in the waters studied by the Palmer Long Term Ecological Research (LTER) Station off the Western Antarctic Peninsula (WAP). Employing a combination of long-term satellite-linked tags and short-term suction cup tags, researchers will investigate the distribution, abundance and foraging behaviors of whales in this region. Whale biogeography will then be related to quantitative surveys of krill, their primary food source. Hypotheses regarding whale distribution and foraging strategies as well as physical oceanographic features will be tested. The WAP is undergoing some of the most dramatic warming on the planet, and a better understanding of the ecology of top predators is central to developing an understanding of the impacts of this change. Results will be widely disseminated through publications as well as through presentations at national and international meetings. In addition, raw data will be made available through open-access databases. Finally, this work will be coordinated with the extensive infrastructure of the Palmer LTER site, enabling outreach and educational activities.\n", "east": -60.0, "geometry": ["POINT(-70 -66.5)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Oceans; Sample/collection Description; Sample/Collection Description; Southern Ocean; Whales", "locations": "Southern Ocean; Antarctica; Antarctic Peninsula", "north": -63.0, "nsf_funding_programs": null, "persons": "Friedlaender, Ari; Johnston, David; Nowacek, Douglas", "project_titles": "RAPID: Linking the Movement Patterns and Foraging Behavior of Humpback Whales to their Prey across Multiple Spatial Scales within the LTER Study Region", "projects": [{"proj_uid": "p0000666", "repository": "USAP-DC", "title": "RAPID: Linking the Movement Patterns and Foraging Behavior of Humpback Whales to their Prey across Multiple Spatial Scales within the LTER Study Region"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "Linking the Movement Patterns and Foraging Behavior of Humpback Whales to their Prey across Multiple Spatial Scales within the LTER Study Region", "uid": "600151", "west": -80.0}, {"awards": "1142018 Arrigo, Kevin", "bounds_geometry": ["POLYGON((-75.8 -61.08,-74.457 -61.08,-73.114 -61.08,-71.771 -61.08,-70.428 -61.08,-69.085 -61.08,-67.742 -61.08,-66.399 -61.08,-65.056 -61.08,-63.713 -61.08,-62.37 -61.08,-62.37 -61.684,-62.37 -62.288,-62.37 -62.892,-62.37 -63.496,-62.37 -64.1,-62.37 -64.704,-62.37 -65.308,-62.37 -65.912,-62.37 -66.516,-62.37 -67.12,-63.713 -67.12,-65.056 -67.12,-66.399 -67.12,-67.742 -67.12,-69.085 -67.12,-70.428 -67.12,-71.771 -67.12,-73.114 -67.12,-74.457 -67.12,-75.8 -67.12,-75.8 -66.516,-75.8 -65.912,-75.8 -65.308,-75.8 -64.704,-75.8 -64.1,-75.8 -63.496,-75.8 -62.892,-75.8 -62.288,-75.8 -61.684,-75.8 -61.08))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "Global climate change is having significant effects on areas of the Southern Ocean, and a better understanding of this ecosystem will permit predictions about the large-scale implications of these shifts. The haptophyte Phaeocystis antarctica is an important component of the phytoplankton communities in this region, but little is known about the factors controlling its distribution. Preliminary data suggest that P. antarctica posses unique adaptations that allow it to thrive in regions with dynamic light regimes. This research will extend these results to identify the physiological and genetic mechanisms that affect the growth and distribution of P. antarctica. This work will use field and laboratory-based studies and a suite of modern molecular techniques to better understand the biogeography and physiology of this key organism. Results will be widely disseminated through publications as well as through presentations at national and international meetings. In addition, raw data will be made available through open-access databases. This project will support the research and training of two graduate students and will foster an established international collaboration with Dutch scientists. Researchers on this project will participate in outreach programs targeting K12 teachers as well as high school students.", "east": -62.37, "geometry": ["POINT(-69.085 -64.1)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Chlorophyll; CTD Data; NBP1310; NBP1409; Oceans; Physical Oceanography; Phytoplankton; Sea Surface; Southern Ocean", "locations": "Southern Ocean; Sea Surface; Antarctic Peninsula; Antarctica", "north": -61.08, "nsf_funding_programs": null, "persons": "Arrigo, Kevin", "project_titles": "Collaborative Research: Adaptive Responses of Phaeocystis Populations in Antarctic Ecosystems", "projects": [{"proj_uid": "p0000446", "repository": "USAP-DC", "title": "Collaborative Research: Adaptive Responses of Phaeocystis Populations in Antarctic Ecosystems"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -67.12, "title": "Adaptive Responses of Phaeocystis Populations in Antarctic Ecosystems", "uid": "600161", "west": -75.8}, {"awards": "1141973 Tedesco, Marco", "bounds_geometry": ["POLYGON((-94.7374 -56.9464,-89.23679 -56.9464,-83.73618 -56.9464,-78.23557 -56.9464,-72.73496 -56.9464,-67.23435 -56.9464,-61.73374 -56.9464,-56.23313 -56.9464,-50.73252 -56.9464,-45.23191 -56.9464,-39.7313 -56.9464,-39.7313 -59.19838,-39.7313 -61.45036,-39.7313 -63.70234,-39.7313 -65.95432,-39.7313 -68.2063,-39.7313 -70.45828,-39.7313 -72.71026,-39.7313 -74.96224,-39.7313 -77.21422,-39.7313 -79.4662,-45.23191 -79.4662,-50.73252 -79.4662,-56.23313 -79.4662,-61.73374 -79.4662,-67.23435 -79.4662,-72.73496 -79.4662,-78.23557 -79.4662,-83.73618 -79.4662,-89.23679 -79.4662,-94.7374 -79.4662,-94.7374 -77.21422,-94.7374 -74.96224,-94.7374 -72.71026,-94.7374 -70.45828,-94.7374 -68.2063,-94.7374 -65.95432,-94.7374 -63.70234,-94.7374 -61.45036,-94.7374 -59.19838,-94.7374 -56.9464))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "This award supports a project to generate first-time validated enhanced spatial resolution (5-10 km) maps of surface melting over the Antarctic Peninsula for the period 1958 - to date from the outputs of a regional climate model and different downscaling techniques. These maps will be assessed and validated through new high spatial resolution (2.25 km) surface melting maps obtained from the QuikSCAT satellite for the period 1999 - 2009. The intellectual merit of this work is that it would be the first time that the outputs of a regional climate model would be used to study surface melting over Antarctica at such high spatial resolution and the first time that such results are validated by means of an observational tool that has such a large spatial coverage and high spatial resolution. The results generated in this study would also provide a first-time opportunity to study the melt distribution over the Peninsula and its correlation with climate drivers, such as the Southern Annual Mode (SAM) and the El Nino-Southern Oscillation (ENSO) at these unprecedented spatial scales. The enhanced resolution melting maps will also offer a unique opportunity to study melting trends and patterns over specific regions of the Peninsula, such as the Wilkins and the Larsen A and B ice shelves and evaluate whether the extreme melting observed during the recent collapses was unprecedented over the + 50 years. The broader impacts of the project are that it will integrate research and education by fully supporting one female undergrad student, a PhD student and partially supporting a PostDoc. The work will be done at a minority-serving institution and the PhD student who worked on the development of the high-resolution melting data set from QuikSCAT will become the PostDoc who will work on this project. Teaching and learning will be supported by incorporating research results into graduate and undergrad level courses and will be disseminated over the web and through appropriate channels. Results from this project will also benefit the society at large as they will improve our understanding of the links between atmospheric patterns and surface melting and they will contribute to improving estimates of sea level rise from the Antarctica continent.", "east": -39.7313, "geometry": ["POINT(-67.23435 -68.2063)"], "keywords": "Antarctica; Atmosphere; Climate; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Meteorology; Model", "locations": "Antarctica", "north": -56.9464, "nsf_funding_programs": null, "persons": "Tedesco, Marco", "project_titles": "Enhanced Spatial Resolution Surface Melting over the Antarctic Peninsula (1958 - to date) from a Regional Climate Model Validated through Remote Sensing Observations", "projects": [{"proj_uid": "p0000313", "repository": "USAP-DC", "title": "Enhanced Spatial Resolution Surface Melting over the Antarctic Peninsula (1958 - to date) from a Regional Climate Model Validated through Remote Sensing Observations"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.4662, "title": "Enhanced Spatial Resolution Surface Melting over the Antarctic Peninsula (1958 - to date) from a Regional Climate Model Validated through Remote Sensing Observations", "uid": "600160", "west": -94.7374}, {"awards": "0739575 Emslie, Steven", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "The research combines interdisciplinary study in geology, paleontology, and biology, using stable isotope and radiocarbon analyses, to examine how climate change and resource utilization have influenced population distribution, movement, and diet in penguins during the mid-to-late Holocene. Previous investigations have demonstrated that abandoned colonies contain well-preserved remains that can be used to examine differential responses of penguins to climate change in various sectors of Antarctica. As such, the research team will investigate abandoned and active pygoscelid penguin (Adelie, Chinstrap, and Gentoo) colonies in the Antarctic Peninsula and Ross Sea regions, and possibly Prydz Bay, in collaboration with Chinese scientists during four field seasons. Stable isotope analyses will be conducted on recovered penguin tissues and prey remains in guano to address hypotheses on penguin occupation history, population movement, and diet in relation to climate change since the late Pleistocene. The study will include one Ph.D., two Masters and 16 undergraduate students in advanced research over the project period. Students will be exposed to a variety of fields, the scientific method, and international scientific research. They will complete field and lab research for individual projects or Honor\u0027s theses for academic credit. The project also will include web-based outreach, lectures to middle school students, and the development of interactive exercises that highlight hypothesis-driven research and the ecology of Antarctica. Two undergraduate students in French and Spanish languages at UNCW will be hired to assist in translating the Web page postings for broader access to this information.\n", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Geochronology; Global; Penguin; Ross Sea; Sample/collection Description; Sample/Collection Description; Scotia Sea; Southern Ocean", "locations": "Antarctic Peninsula; Antarctica; Scotia Sea; Ross Sea; Global; Southern Ocean", "north": -60.0, "nsf_funding_programs": null, "persons": "Patterson, William; Polito, Michael; Emslie, Steven D.", "project_titles": "Stable Isotope Analyses of Pygoscelid Penguin remains from Active and Abandoned Colonies in Antarctica", "projects": [{"proj_uid": "p0000317", "repository": "USAP-DC", "title": "Stable Isotope Analyses of Pygoscelid Penguin remains from Active and Abandoned Colonies in Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Stable Isotope Analyses of Pygoscelid Penguin remains from Active and Abandoned Colonies in Antarctica", "uid": "600145", "west": -180.0}, {"awards": "1332492 Lohmann, Rainer", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "Many persistent organic pollutants (POPs), though banned in the U.S. since the 1970s, remain in the environment and continue to reach hitherto pristine regions such as the Arctic and Antarctic. The overall goals of this RAPID project are to better understand the remobilization of POPs from melting glaciers in the Antarctic, and their transfer into the food-web. Legacy POPs have characteristic chemical signatures that will be used ascertain the origin of POPs in the Antarctic atmosphere and marine food-web. Samples that were collected in 2010 will be analyzed for a wide range of legacy POPs, and their behavior will be contrasted with results for emerging contaminants. The intellectual merit of the proposed research combines (a) the use of chemical signatures to assess whether melting glaciers are releasing legacy POPs back into the Antarctic marine ecosystem, and (b) a better understanding of the food-web dynamics of legacy POPs versus emerging organic pollutants.\n\nThe broader impacts of the proposed research project will include the training of the next generation of scientists through support for a graduate student and a postdoctoral scholar. As well, this work will result in a better understanding of the relationship between pollutants, trophic food web ecology and global climate change in the pristine Antarctic ecosystem.\n", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Animal Tracking; Antarctica; Antarctic Peninsula; Atmosphere; Biota; Chemistry:fluid; Chemistry:Fluid; Human Dimensions; McMurdo Sound; Oceans; Palmer Station; Pollution; Ross Sea; Sample/collection Description; Sample/Collection Description; Seals; Southern Ocean; Weddell Sea", "locations": "Southern Ocean; Weddell Sea; Antarctica; Ross Sea; Palmer Station; McMurdo Sound; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": null, "persons": "Lohmann, Rainer", "project_titles": "RAPID: Origin of Persistent Organic Pollutants in the Antarctic Atmosphere, Snow and Marine Food WEB", "projects": [{"proj_uid": "p0000344", "repository": "USAP-DC", "title": "RAPID: Origin of Persistent Organic Pollutants in the Antarctic Atmosphere, Snow and Marine Food WEB"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Origin of Persistent Organic Pollutants in the Antarctic Atmosphere, Snow and Marine Food Web", "uid": "600138", "west": -180.0}, {"awards": "1303896 Kirschvink, Joseph", "bounds_geometry": ["POLYGON((-57 -63,-56.9 -63,-56.8 -63,-56.7 -63,-56.6 -63,-56.5 -63,-56.4 -63,-56.3 -63,-56.2 -63,-56.1 -63,-56 -63,-56 -63.2,-56 -63.4,-56 -63.6,-56 -63.8,-56 -64,-56 -64.2,-56 -64.4,-56 -64.6,-56 -64.8,-56 -65,-56.1 -65,-56.2 -65,-56.3 -65,-56.4 -65,-56.5 -65,-56.6 -65,-56.7 -65,-56.8 -65,-56.9 -65,-57 -65,-57 -64.8,-57 -64.6,-57 -64.4,-57 -64.2,-57 -64,-57 -63.8,-57 -63.6,-57 -63.4,-57 -63.2,-57 -63))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "The PI will collect samples to extend the magneto-stratigraphic record of late Cretaceous sediments of the James Ross Basin, Antarctica. RAPID support will allow him to take advantage of an invitation from the Instituto Antartico Argentino (IAA) to participate on an excursion to James Ross Island in the Antarctic Peninsula. The PI hopes to collect samples that will refine the position of several geomagnetic reversals between the end of the Cretaceous long normal Chron and the lower portion of Chron 31R. The Brandy Bay locality targeted by this expedition is the best place in the basin for calibrating the biostratigraphic position of the top of the Cretaceous Long Normal Chron, which is one of the most reliable correlation horizons in the entire Geological Time Scale.\n\nThe top of the Cretaceous long normal Chron is not properly correlated to southern hemisphere biostratigraphy. Locating this event will be a major addition to understanding geological time. This expedition will provide opportunities for an undergraduate student. This project is based on a productive collaboration with an Argentine scientist.", "east": -56.0, "geometry": ["POINT(-56.5 -64)"], "keywords": "Antarctica; GPS; James Ross Basin; Sample/collection Description; Sample/Collection Description; Solid Earth", "locations": "Antarctica; James Ross Basin", "north": -63.0, "nsf_funding_programs": null, "persons": "Kirschvink, Joseph", "project_titles": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica", "projects": [{"proj_uid": "p0000419", "repository": "USAP-DC", "title": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Magnetostratigraphy of Cretaceous Sediments in the James Ross Island Basin, Antarctica", "uid": "600136", "west": -57.0}, {"awards": "1041022 McClintock, James", "bounds_geometry": ["POLYGON((-79 -60,-76.4 -60,-73.8 -60,-71.2 -60,-68.6 -60,-66 -60,-63.4 -60,-60.8 -60,-58.2 -60,-55.6 -60,-53 -60,-53 -61,-53 -62,-53 -63,-53 -64,-53 -65,-53 -66,-53 -67,-53 -68,-53 -69,-53 -70,-55.6 -70,-58.2 -70,-60.8 -70,-63.4 -70,-66 -70,-68.6 -70,-71.2 -70,-73.8 -70,-76.4 -70,-79 -70,-79 -69,-79 -68,-79 -67,-79 -66,-79 -65,-79 -64,-79 -63,-79 -62,-79 -61,-79 -60))"], "date_created": "Thu, 01 Jan 2015 00:00:00 GMT", "description": "The research will investigate the individual and combined effects of rising ocean acidification and sea surface temperatures on shallow-water calcified benthic organisms in western Antarctic Peninsular (WAP) marine communities. The Southern Ocean is predicted to become undersaturated in terms of both aragonite and calcite within 50 and 100 years, respectively, challenging calcification processes. Adding to the problem, antarctic calcified benthic marine organisms are more vulnerable to ocean acidification than temperate and tropical species because they are generally weakly calcified. Many antarctic organisms are essentially stenothermal, and those in the West Antarctic Peninsula are being subjected to rising seawater temperatures. The project employs both single-species and multi-species level approaches to evaluating the impacts of rising ocean acidification and seawater temperature on representative calcified and non-calcified macroalgae, on calcified and non-calcified mesograzers, and on a calcified macro-grazer, all of which are important ecological players in the rich benthic communities. Multi-species analysis will focus on the diverse assemblage of amphipods and mesogastropods that are associated with dominant macroalgae that collectively play a key role in community dynamics along the WAP. The project will support undergraduate research, both through NSF programs, as well as home university-based programs, some designed to enhance the representation of minorities in the sciences. The principal investigators also will support and foster graduate education through mentoring of graduate students. Through their highly successful UAB IN ANTARCTICA interactive web program, they will continue to involve large numbers of teachers, K-12 students, and other members of the community at large in their scientific endeavors in Antarctica.", "east": -53.0, "geometry": ["POINT(-66 -65)"], "keywords": "Antarctic Peninsula; Biota; Oceans; Southern Ocean", "locations": "Antarctic Peninsula; Southern Ocean", "north": -60.0, "nsf_funding_programs": null, "persons": "McClintock, James; Amsler, Charles; Angus, Robert", "project_titles": "The effects of ocean acidification and rising sea surface temperatures on shallow-water benthic organisms in Antarctica", "projects": [{"proj_uid": "p0000426", "repository": "USAP-DC", "title": "The effects of ocean acidification and rising sea surface temperatures on shallow-water benthic organisms in Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "The effects of ocean acidification and rising sea surface temperatures on shallow-water benthic organisms in Antarctica", "uid": "600122", "west": -79.0}, {"awards": "0944248 MacAyeal, Douglas", "bounds_geometry": ["POLYGON((-63 -63,-62.2 -63,-61.4 -63,-60.6 -63,-59.8 -63,-59 -63,-58.2 -63,-57.4 -63,-56.6 -63,-55.8 -63,-55 -63,-55 -63.4,-55 -63.8,-55 -64.2,-55 -64.6,-55 -65,-55 -65.4,-55 -65.8,-55 -66.2,-55 -66.6,-55 -67,-55.8 -67,-56.6 -67,-57.4 -67,-58.2 -67,-59 -67,-59.8 -67,-60.6 -67,-61.4 -67,-62.2 -67,-63 -67,-63 -66.6,-63 -66.2,-63 -65.8,-63 -65.4,-63 -65,-63 -64.6,-63 -64.2,-63 -63.8,-63 -63.4,-63 -63))"], "date_created": "Tue, 29 Apr 2014 00:00:00 GMT", "description": "This data set addresses why surface melt water lakes on ice shelves and ice sheets are notably influential in triggering ice-shelf break-up and modulating seasonal ice flow, and are thus principle avenues by which environmental change can be transmitted to the ice sheets of Antarctica and Greenland. A comparative analysis is performed of lake geometry and derived depth (using Landsat image reflectance) in two distinct regions, one a collapsing ice shelf and the other an ablation zone of a land terminating ice sheet, to better characterize the range of surface lake variability.", "east": -55.0, "geometry": ["POINT(-59 -65)"], "keywords": "Antarctica; Antarctic Peninsula; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Ice Shelf; Larsen B Ice Shelf; Sample/collection Description; Sample/Collection Description; Supraglacial Meltwater", "locations": "Antarctica; Larsen B Ice Shelf; Antarctic Peninsula", "north": -63.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "MacAyeal, Douglas", "project_titles": "Model Studies of Surface Water Behavior on Ice Shelves", "projects": [{"proj_uid": "p0000052", "repository": "USAP-DC", "title": "Model Studies of Surface Water Behavior on Ice Shelves"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -67.0, "title": "Standing Water Depth on Larsen B Ice Shelf", "uid": "609584", "west": -63.0}, {"awards": "0838996 Hollibaugh, James", "bounds_geometry": ["POLYGON((-79 -63,-77.5 -63,-76 -63,-74.5 -63,-73 -63,-71.5 -63,-70 -63,-68.5 -63,-67 -63,-65.5 -63,-64 -63,-64 -63.8,-64 -64.6,-64 -65.4,-64 -66.2,-64 -67,-64 -67.8,-64 -68.6,-64 -69.4,-64 -70.2,-64 -71,-65.5 -71,-67 -71,-68.5 -71,-70 -71,-71.5 -71,-73 -71,-74.5 -71,-76 -71,-77.5 -71,-79 -71,-79 -70.2,-79 -69.4,-79 -68.6,-79 -67.8,-79 -67,-79 -66.2,-79 -65.4,-79 -64.6,-79 -63.8,-79 -63))"], "date_created": "Wed, 01 Jan 2014 00:00:00 GMT", "description": "Ammonia oxidation is the first step in the conversion of regenerated nitrogen to dinitrogen gas, a 3-step pathway mediated by 3 distinct guilds of bacteria and archaea. Ammonia oxidation and the overall process of nitrification-denitrification have received relatively little attention in polar oceans where the effects of climate change on biogeochemical rates are likely to be pronounced. Previous work on Ammonia Oxidizing Archaea (AOA) in the Palmer LTER study area West of the Antarctic Peninsula (WAP), has suggested strong vertical segregation of crenarchaeote metabolism, with the \u0027winter water\u0027 (WW, ~50-100 m depth range) dominated by non-AOA crenarchaeotes, while Crenarchaeota populations in the \u0027circumpolar deep water\u0027 (CDW), which lies immediately below the winter water (150-3500 m), are dominated by AOA. Analysis of a limited number of samples from the Arctic Ocean did not reveal a comparable vertical segregation of AOA, and suggested that AOA and Crenarchaeota abundance is much lower there than in the Antarctic. These findings led to 3 hypotheses that will be tested in this project: 1) the apparent low abundance of Crenarchaeota and AOA in Arctic Ocean samples may be due to spatial or temporal variability in populations; 2) the WW population of Crenarchaeota in the WAP is dominated by a heterotroph; 3) the WW population of Crenarchaeota in the WAP \u0027grows in\u0027 during spring and summer after this water mass forms.\n\nThe study will contribute substantially to understanding an important aspect of the nitrogen cycle in the Palmer LTER (Long Term Ecological Research) study area by providing insights into the ecology and physiology of AOA. The natural segregation of crenarchaeote phenotypes in waters of the WAP, coupled with metagenomic studies in progress in the same area by others (A. Murray, H. Ducklow), offers the possibility of major breakthroughs in understanding of the metabolic capabilities of these organisms. This knowledge is needed to model how water column nitrification will respond to changes in polar ecosystems accompanying global climate change. The Principal Investigator will participate fully in the education and outreach efforts of the Palmer LTER, including making highlights of our findings available for posting to their project web site and participating in outreach (for example, Schoolyard LTER). The research also will involve undergraduates (including the field work if possible) and will support high school interns in the P.I.\u0027s laboratory over the summer.\n", "east": -64.0, "geometry": ["POINT(-71.5 -67)"], "keywords": "Biota; Chemistry:fluid; Chemistry:Fluid; LMG1006; LMG1101; LTER Palmer Station; Oceans; Southern Ocean", "locations": "Southern Ocean", "north": -63.0, "nsf_funding_programs": null, "persons": "Hollibaugh, James T.", "project_titles": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula", "projects": [{"proj_uid": "p0000359", "repository": "USAP-DC", "title": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.0, "title": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula", "uid": "600105", "west": -79.0}, {"awards": "0732983 Vernet, Maria", "bounds_geometry": ["POLYGON((-66 -62,-65.3 -62,-64.6 -62,-63.9 -62,-63.2 -62,-62.5 -62,-61.8 -62,-61.1 -62,-60.4 -62,-59.7 -62,-59 -62,-59 -62.8,-59 -63.6,-59 -64.4,-59 -65.2,-59 -66,-59 -66.8,-59 -67.6,-59 -68.4,-59 -69.2,-59 -70,-59.7 -70,-60.4 -70,-61.1 -70,-61.8 -70,-62.5 -70,-63.2 -70,-63.9 -70,-64.6 -70,-65.3 -70,-66 -70,-66 -69.2,-66 -68.4,-66 -67.6,-66 -66.8,-66 -66,-66 -65.2,-66 -64.4,-66 -63.6,-66 -62.8,-66 -62))"], "date_created": "Wed, 01 Jan 2014 00:00:00 GMT", "description": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach - Marine Ecosystems. A profound transformation in ecosystem structure and function is occurring in coastal waters of the western Weddell Sea, with the collapse of the Larsen B ice shelf. This transformation appears to be yielding a redistribution of energy flow between chemoautotrophic and photosynthetic production, and to be causing the rapid demise of the extraordinary seep ecosystem discovered beneath the ice shelf. This event provides an ideal opportunity to examine fundamental aspects of ecosystem transition associated with climate change. We propose to test the following hypotheses to elucidate the transformations occurring in marine ecosystems as a consequence of the Larsen B collapse: (1) The biogeographic isolation and sub-ice shelf setting of the Larsen B seep has led to novel habitat characteristics, chemoautotrophically dependent taxa and functional adaptations. (2) Benthic communities beneath the former Larsen B ice shelf are fundamentally different from assemblages at similar depths in the Weddell sea-ice zone, and resemble oligotrophic deep-sea communities. Larsen B assemblages are undergoing rapid change. (3) The previously dark, oligotrophic waters of the Larsen B embayment now support a thriving phototrophic community, with production rates and phytoplankton composition similar to other productive areas of the Weddell Sea. To document rapid changes occurring in the Larsen B ecosystem, we will use a remotely operated vehicle, shipboard samplers, and moored sediment traps. We will characterize microbial, macrofaunal and megafaunal components of the seep community; evaluate patterns of surface productivity, export flux, and benthic faunal composition in areas previously covered by the ice shelf, and compare these areas to the open sea-ice zone. These changes will be placed within the geological, glaciological and climatological context that led to ice-shelf retreat, through companion research projects funded in concert with this effort. Together these projects will help predict the likely consequences of ice-shelf collapse to marine ecosystems in other regions of Antarctica vulnerable to climate change. The research features international collaborators from Argentina, Belgium, Canada, Germany, Spain and the United Kingdom. The broader impacts include participation of a science writer; broadcast of science segments by members of the Jim Lehrer News Hour (Public Broadcasting System); material for summer courses in environmental change; mentoring of graduate students and postdoctoral fellows; and showcasing scientific activities and findings to students and public through podcasts.\n", "east": -59.0, "geometry": ["POINT(-62.5 -66)"], "keywords": "Antarctica; Antarctic Peninsula; Araon1304; Biota; LARISSA; Larsen B Ice Shelf; NBP1001; NBP1203; Oceans; Physical Oceanography; Southern Ocean; Weddell Sea", "locations": "Larsen B Ice Shelf; Weddell Sea; Southern Ocean; Antarctic Peninsula; Antarctica", "north": -62.0, "nsf_funding_programs": null, "persons": "Vernet, Maria", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -70.0, "title": "Abrupt Environmental Change in the Larsen Ice Shelf System (LARISSA) - Marine Ecosystems", "uid": "600073", "west": -66.0}, {"awards": "0838830 Cottrell, Matthew", "bounds_geometry": ["POLYGON((-64.079666 -64.77966,-64.0757659 -64.77966,-64.0718658 -64.77966,-64.0679657 -64.77966,-64.0640656 -64.77966,-64.0601655 -64.77966,-64.0562654 -64.77966,-64.0523653 -64.77966,-64.0484652 -64.77966,-64.0445651 -64.77966,-64.040665 -64.77966,-64.040665 -64.783261,-64.040665 -64.786862,-64.040665 -64.790463,-64.040665 -64.794064,-64.040665 -64.797665,-64.040665 -64.801266,-64.040665 -64.804867,-64.040665 -64.808468,-64.040665 -64.812069,-64.040665 -64.81567,-64.0445651 -64.81567,-64.0484652 -64.81567,-64.0523653 -64.81567,-64.0562654 -64.81567,-64.0601655 -64.81567,-64.0640656 -64.81567,-64.0679657 -64.81567,-64.0718658 -64.81567,-64.0757659 -64.81567,-64.079666 -64.81567,-64.079666 -64.812069,-64.079666 -64.808468,-64.079666 -64.804867,-64.079666 -64.801266,-64.079666 -64.797665,-64.079666 -64.794064,-64.079666 -64.790463,-64.079666 -64.786862,-64.079666 -64.783261,-64.079666 -64.77966))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Light quality and availability are likely to change in polar ecosystems as ice coverage and thickness decrease. How microbes adjust to these and other changes will have huge impacts on the polar marine ecosystems. Little is known about photoheterotrophic prokaryotes, which are hypothesized to gain a metabolic advantage by harvesting light energy in addition to utilizing dissolved organic matter (DOM). Photoheterotrophy is not included in current models of carbon cycling and energy flow. This research will examine three questions: 1. Are photoheterotrophic microbes present and active in Antarctic waters in winter and summer? 2. Does community structure of photoheterotrophs shift between summer and winter? 3. Which microbial groups assimilate more DOM in light than in the dark? The research will test hypotheses about activity of photoheterotrophs in winter and in summer, shifts in community structure between light and dark seasons and the potentially unique impacts of photoheterotrophs on biogeochemical processes in the Antarctic. The project will directly support a graduate student, will positively impact the NSF REU program at the College of Marine and Earth Studies, and will include students from the nation\u0027s oldest historical minority college. The results will be featured during weekly tours of Lewes facilities (about 1000 visitors per year) and during Coast Day, an annual open-house that attracts about 10,000 visitors.", "east": -64.040665, "geometry": ["POINT(-64.0601655 -64.797665)"], "keywords": "Antarctic Peninsula; Biota; LTER Palmer Station; Microbiology; Oceans; Southern Ocean", "locations": "Antarctic Peninsula; Southern Ocean", "north": -64.77966, "nsf_funding_programs": null, "persons": "Cottrell, Matthew; Kirchman, David", "project_titles": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem", "projects": [{"proj_uid": "p0000473", "repository": "USAP-DC", "title": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.81567, "title": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem", "uid": "600097", "west": -64.079666}, {"awards": "1019838 Wendt, Dean", "bounds_geometry": null, "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "The Antarctic Peninsula is among the most rapidly warming regions on earth. Increased heat from the Antarctic Circumpolar Current has elevated the temperature of the 300 m of shelf water below the permanent pycnocline by 0.7 degrees C. This trend has displaced the once dominant cold, dry continental Antarctic climate, and is causing multi-level responses in the marine ecosystem. One striking example of the ecosystem response to warming has been the local declines in ice-dependent Ad\u00e9lie penguins. The changes in these apex predators are thought to be driven by alterations in phytoplankton and zooplankton community composition, and the foraging limitations and diet differences between these species. One of the most elusive questions facing researchers interested in the foraging ecology of the Ad\u00e9lie penguin, namely, what are the biophysical properties that characterize the three dimensional foraging space of this top predator? The research will combine the real-time site and diving information from the Ad\u00e9lie penguin satellite tags with the full characterization of the oceanography and the penguins prey field using an autonomous underwater vehicle (AUV). While some of these changes have been documented over large spatial scales of the WAP, it is now thought that the causal mechanisms that favor of one life history strategy over another may actually operate over much smaller scales than previously thought, specifically on the scale of local breeding sites and over-wintering areas. Characterization of prey fields on these local scales has yet to be done and one that the AUV is ideally suited. The results will have a direct tie to the climate induced changes that are occurring in the West Antarctic Peninsula. This study will also highlight a new approach to linking an autonomous platform to bird behavior that could be expanded to include the other two species of penguins and examine the seasonal differences in their foraging behavior and prey selection. From a vehicle perspective, this effort will inform the AUV user community of new sensor suites and/or data processing approaches that are required to better evaluate foraging habitat. The project also will help transition AUV platforms into routine investigative tools for this region, which is chronically under sampled and will remain difficult to access\n", "east": null, "geometry": null, "keywords": "Biota; Oceans; Southern Ocean", "locations": "Southern Ocean", "north": null, "nsf_funding_programs": null, "persons": "Wendt, Dean; Moline, Mark", "project_titles": "Real-Time Characterization of Adelie Penguin Foraging Environment Using an Autonomous Underwater Vehicle", "projects": [{"proj_uid": "p0000662", "repository": "USAP-DC", "title": "Real-Time Characterization of Adelie Penguin Foraging Environment Using an Autonomous Underwater Vehicle"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Real-Time Characterization of Adelie Penguin Foraging Environment Using an Autonomous Underwater Vehicle", "uid": "600120", "west": null}, {"awards": "0724929 Simms, Alexander", "bounds_geometry": null, "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "This data set includes optically stimulated luminescence (OSL) ages and elevations obtained from raised beach ridges across the Antarctic Peninsula.", "east": null, "geometry": null, "keywords": "Antarctica; Antarctic Peninsula; Sample/collection Description; Sample/Collection Description; Solid Earth", "locations": "Antarctic Peninsula; Antarctica", "north": null, "nsf_funding_programs": null, "persons": "Simms, Alexander", "project_titles": "SGER: Testing the use of OSL dating of beach deposits along the Antarctic Peninsula", "projects": [{"proj_uid": "p0000266", "repository": "USAP-DC", "title": "SGER: Testing the use of OSL dating of beach deposits along the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Optically Stimulated Luminescence Ages of Raised Beaches", "uid": "600026", "west": null}, {"awards": "0732655 Mosley-Thompson, Ellen", "bounds_geometry": ["POLYGON((-63 -60,-62.6 -60,-62.2 -60,-61.8 -60,-61.4 -60,-61 -60,-60.6 -60,-60.2 -60,-59.8 -60,-59.4 -60,-59 -60,-59 -60.5,-59 -61,-59 -61.5,-59 -62,-59 -62.5,-59 -63,-59 -63.5,-59 -64,-59 -64.5,-59 -65,-59.4 -65,-59.8 -65,-60.2 -65,-60.6 -65,-61 -65,-61.4 -65,-61.8 -65,-62.2 -65,-62.6 -65,-63 -65,-63 -64.5,-63 -64,-63 -63.5,-63 -63,-63 -62.5,-63 -62,-63 -61.5,-63 -61,-63 -60.5,-63 -60))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Like no other region on Earth, the northern Antarctic Peninsula represents a spectacular natural laboratory of climate change and provides the opportunity to study the record of past climate and ecological shifts alongside the present-day changes in one of the most rapidly warming regions on Earth. This award supported the cryospheric and oceanographic components of an integrated multi-disciplinary program to address these rapid and fundamental changes now taking place in Antarctic Peninsula (AP). By making use of a marine research platform (the RV NB Palmer and on-board helicopters) and additional logistical support from the Argentine Antarctic program, the project brought together glaciologists, oceanographers, marine geologists and biologists who have worked collaboratively to address fundamental interdisciplinary questions regarding climate change.", "east": -59.0, "geometry": ["POINT(-61 -62.5)"], "keywords": "Antarctica; Antarctic Peninsula; Bruce Plateau; Glaciology; Ice Core Records; Isotope; LARISSA; Paleoclimate; Sample/collection Description; Sample/Collection Description; Snow Accumulation", "locations": "Antarctica; Bruce Plateau; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": null, "persons": "Thompson, Lonnie G.; Mosley-Thompson, Ellen", "project_titles": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans", "projects": [{"proj_uid": "p0000101", "repository": "USAP-DC", "title": "Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LARISSA", "south": -65.0, "title": "Abrupt Environmental Change in the Larsen Ice Shelf System (LARISSA) - Cryosphere and Oceans", "uid": "600167", "west": -63.0}, {"awards": "XXXXXXX Palais, Julie", "bounds_geometry": ["POLYGON((-70 -63,-68.5 -63,-67 -63,-65.5 -63,-64 -63,-62.5 -63,-61 -63,-59.5 -63,-58 -63,-56.5 -63,-55 -63,-55 -63.7,-55 -64.4,-55 -65.1,-55 -65.8,-55 -66.5,-55 -67.2,-55 -67.9,-55 -68.6,-55 -69.3,-55 -70,-56.5 -70,-58 -70,-59.5 -70,-61 -70,-62.5 -70,-64 -70,-65.5 -70,-67 -70,-68.5 -70,-70 -70,-70 -69.3,-70 -68.6,-70 -67.9,-70 -67.2,-70 -66.5,-70 -65.8,-70 -65.1,-70 -64.4,-70 -63.7,-70 -63))"], "date_created": "Mon, 30 Apr 2012 00:00:00 GMT", "description": "This data set provides a 100 meter resolution surface topography Digital Elevation Model (DEM) of the Antarctic Peninsula. The DEM is based on Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) data.", "east": -55.0, "geometry": ["POINT(-62.5 -66.5)"], "keywords": "Antarctica; Antarctic Peninsula; ASTER; Digital Elevation Model; Elevation; Glaciers/ice Sheet; Glaciers/Ice Sheet; Solid Earth", "locations": "Antarctica; Antarctic Peninsula", "north": -63.0, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Cook, Allison", "project_titles": null, "projects": null, "repositories": null, "science_programs": null, "south": -70.0, "title": "Antarctic Peninsula 100 m Digital Elevation Model Derived from ASTER GDEM", "uid": "609516", "west": -70.0}, {"awards": "0838773 McClintock, James", "bounds_geometry": ["POLYGON((-79 -60,-76.4 -60,-73.8 -60,-71.2 -60,-68.6 -60,-66 -60,-63.4 -60,-60.8 -60,-58.2 -60,-55.6 -60,-53 -60,-53 -61,-53 -62,-53 -63,-53 -64,-53 -65,-53 -66,-53 -67,-53 -68,-53 -69,-53 -70,-55.6 -70,-58.2 -70,-60.8 -70,-63.4 -70,-66 -70,-68.6 -70,-71.2 -70,-73.8 -70,-76.4 -70,-79 -70,-79 -69,-79 -68,-79 -67,-79 -66,-79 -65,-79 -64,-79 -63,-79 -62,-79 -61,-79 -60))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, as well as rich assemblages of macroalgae, endophytes, and macroinvertebrates. Unlike temperate and tropical shallow marine environments, where fish and sea urchins are key grazers structuring the community, mesograzers appear to be much more important in the WAP. Accordingly, the proposed research has two main objectives: (1) To further investigate the interactions between the ecologically dominant large macrophytes, filamentous epi/endophytes, and mesograzers and (2) To determine the nature of interactions between mesograzers and sessile invertebrates. Specifically, the research will examine the following hypotheses: 1: The effects of endophytes on macrophytes are often negative, and consequently macrophytes defend against endophytic infection. 2: Mesoherbivores prevent filamentous algal species, common in the intertidal, from dominating subtidal assemblages. 3: Mesograzer predation pressure on sessile benthic macroinvertebrates, primarily sponges and tunicates, is greatest in shallow habitats dominated by macrophytes, and this impacts depth distributions of macroinvertebrate species. 4: Benthic macroinvertebrates may defend against mesograzers with secondary metabolites which effect molting and/or deter feeding. Broader impacts include involvement of undergraduates, including minorities, in research; training of graduate students, and continuation of the highly successful UAB IN ANTARCTICA interactive web program (two time recipient of awards of excellence from the US Council for Advancement and Support of Education). The researchers also will share their scientific endeavors with teachers, K-12 students, and other members of the community at large while in residence in Antarctica. In addition, the investigators will request the participation of a PolarTREC teacher.", "east": -53.0, "geometry": ["POINT(-66 -65)"], "keywords": "Algae; Antarctica; Antarctic Peninsula; Biota; Oceans; Southern Ocean", "locations": "Antarctica; Southern Ocean; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": null, "persons": "McClintock, James; Amsler, Charles", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula; Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}, {"proj_uid": "p0000475", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula", "uid": "600095", "west": -79.0}, {"awards": "0838776 Baker, Bill", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "The near shore environments of the western Antarctic Peninsula (WAP) harbor extremely high densities of mesograzers (small invertebrate predators approximately 1-25 mm in length) such as benthic amphipods, as well as rich assemblages of macroalgae, endophytes, and macroinvertebrates. Unlike temperate and tropical shallow marine environments, where fish and sea urchins are key grazers structuring the community, mesograzers appear to be much more important in the WAP. Accordingly, the proposed research has two main objectives: (1) To further investigate the interactions between the ecologically dominant large macrophytes, filamentous epi/endophytes, and mesograzers and (2) To determine the nature of interactions between mesograzers and sessile invertebrates. Specifically, the research will examine the following hypotheses: 1: The effects of endophytes on macrophytes are often negative, and consequently macrophytes defend against endophytic infection. 2: Mesoherbivores prevent filamentous algal species, common in the intertidal, from dominating subtidal assemblages. 3: Mesograzer predation pressure on sessile benthic macroinvertebrates, primarily sponges and tunicates, is greatest in shallow habitats dominated by macrophytes, and this impacts depth distributions of macroinvertebrate species. 4: Benthic macroinvertebrates may defend against mesograzers with secondary metabolites which effect molting and/or deter feeding. Broader impacts include involvement of undergraduates, including minorities, in research; training of graduate students, and continuation of the highly successful UAB IN ANTARCTICA interactive web program (two time recipient of awards of excellence from the US Council for Advancement and Support of Education). The researchers also will share their scientific endeavors with teachers, K-12 students, and other members of the community at large while in residence in Antarctica. In addition, the investigators will request the participation of a PolarTREC teacher.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Algae; Antarctica; Antarctic Peninsula; Biota; Oceans; Southern Ocean", "locations": "Southern Ocean; Antarctica; Antarctic Peninsula", "north": -60.0, "nsf_funding_programs": null, "persons": "Baker, Bill", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula; Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0000475", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula"}, {"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula", "uid": "600096", "west": -180.0}, {"awards": "0839084 Ortland, David", "bounds_geometry": ["POLYGON((-63 -59,-62 -59,-61 -59,-60 -59,-59 -59,-58 -59,-57 -59,-56 -59,-55 -59,-54 -59,-53 -59,-53 -59.6,-53 -60.2,-53 -60.8,-53 -61.4,-53 -62,-53 -62.6,-53 -63.2,-53 -63.8,-53 -64.4,-53 -65,-54 -65,-55 -65,-56 -65,-57 -65,-58 -65,-59 -65,-60 -65,-61 -65,-62 -65,-63 -65,-63 -64.4,-63 -63.8,-63 -63.2,-63 -62.6,-63 -62,-63 -61.4,-63 -60.8,-63 -60.2,-63 -59.6,-63 -59))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "The project will employ a sophisticated meteor radar at the Brazilian Antarctic station Comandante Ferraz on King George Island for a number of synergetic research efforts of high interest to the international aeronomical community. The location of the radar will be at the tip of the Antarctic Peninsula - at a critical southern latitude of 62 degrees - to fill a current measurement gap from 54 to 68 degrees south. The radar will play a key role in Antarctic and inter-hemispheric studies of neutral atmosphere dynamics, defining global mesosphere and lower thermosphere structure and variability (from 80 to 105 km) and guiding advances of models accounting for the dynamics of this high-altitude region, including general circulation models, and climate and numerical weather prediction models. The unique radar measurement sensitivity will enable studies of: (1) the large-scale circulation and planetary waves, (2) the tidal structure and variability, (3) the momentum transport by small-scale gravity waves, (4) important, but unquantified, gravity wave - tidal interactions, (5) polar mesosphere summer echoes, and (6) meteor fluxes, head echoes, and non-specular trails, a number of which exhibit high latitudinal gradients at these latitudes. This radar will support extensive collaborations with U.S. and other scientists making measurements at other Antarctic and Arctic conjugate sites, including Brazilian scientists at C. Ferraz and U.S. and international colleagues having other instrumentation in the Antarctic, Arctic, and within South America. Links to the University of Colorado in the U.S., Instituto Nacional de Pesquisas Espaciais (INPE) in Brazil and Universidad Nacional de La Plata in Argentina will provide unique research opportunities for graduate and undergraduate students in the U.S. and South America.", "east": -53.0, "geometry": ["POINT(-58 -62)"], "keywords": "Antarctica; Atmosphere; Meteorology; Meteor Radar", "locations": "Antarctica", "north": -59.0, "nsf_funding_programs": null, "persons": "Fritts, David; Janches, Diego", "project_titles": "Large- and Small-scale Dynamics and Meteor Studies in the MLT with a New-generation Meteor Radar on King George Island", "projects": [{"proj_uid": "p0000670", "repository": "USAP-DC", "title": "Large- and Small-scale Dynamics and Meteor Studies in the MLT with a New-generation Meteor Radar on King George Island"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Large- and Small-scale Dynamics and Meteor Studies in the MLT with a New-generation Meteor Radar on King George Island", "uid": "600107", "west": -63.0}, {"awards": "0528728 Vernet, Maria", "bounds_geometry": ["POLYGON((-69.08 -64.8,-68.632 -64.8,-68.184 -64.8,-67.736 -64.8,-67.288 -64.8,-66.84 -64.8,-66.392 -64.8,-65.944 -64.8,-65.496 -64.8,-65.048 -64.8,-64.6 -64.8,-64.6 -65.121,-64.6 -65.442,-64.6 -65.763,-64.6 -66.084,-64.6 -66.405,-64.6 -66.726,-64.6 -67.047,-64.6 -67.368,-64.6 -67.689,-64.6 -68.01,-65.048 -68.01,-65.496 -68.01,-65.944 -68.01,-66.392 -68.01,-66.84 -68.01,-67.288 -68.01,-67.736 -68.01,-68.184 -68.01,-68.632 -68.01,-69.08 -68.01,-69.08 -67.689,-69.08 -67.368,-69.08 -67.047,-69.08 -66.726,-69.08 -66.405,-69.08 -66.084,-69.08 -65.763,-69.08 -65.442,-69.08 -65.121,-69.08 -64.8))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "This collaborative study between the Desert Research Institute, the University of California, Santa Barbara (0529087; Robin Ross), and the University of California, San Diego (0528728; Maria Vernet) will examine the relationship between sea ice extent along the Antarctic Peninsula and the life history of krill (Euphausia superba), by developing, refining, and linking diagnostic datasets and models of phytoplankton decreases in the fall, phytoplankton biomass incorporation into sea ice, sea ice growth dynamics, sea ice algal production and biomass accumulation, and larval krill energetics, condition, and survival. Krill is a key species in the food web of the Southern Ocean ecosystem, and one that is intricately involved with seasonal sea ice dynamics. Results from the Southern Ocean experiment of the Global Ocean Ecosystems Dynamics program (SO-Globec) field work as well as historical information on sea ice dynamics and krill recruitment suggest a shift in the paradigm that all pack ice is equally good krill habitat. SO-Globec is a multidisciplinary effort focused on understanding the physical and biological factors that influence growth, reproduction, recruitment and survival of Antarctic krill (Euphausia superba). The program uses a multi-trophic level approach that includes the predators and competitors of Antarctic krill, represented by other zooplankton, fish, penguins, seals, and cetaceans. This collaborative project is concerned with the synthesis and modeling of lower trophic levels.", "east": -64.6, "geometry": ["POINT(-66.84 -66.405)"], "keywords": "Bellingshausen Sea; Biota; Oceans; Phytoplankton; Southern Ocean", "locations": "Southern Ocean; Bellingshausen Sea", "north": -64.8, "nsf_funding_programs": null, "persons": "Vernet, Maria", "project_titles": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "projects": [{"proj_uid": "p0000522", "repository": "USAP-DC", "title": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.01, "title": "The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "uid": "600048", "west": -69.08}, {"awards": "0529087 Ross, Robin", "bounds_geometry": ["POLYGON((-71 -61,-70 -61,-69 -61,-68 -61,-67 -61,-66 -61,-65 -61,-64 -61,-63 -61,-62 -61,-61 -61,-61 -61.9,-61 -62.8,-61 -63.7,-61 -64.6,-61 -65.5,-61 -66.4,-61 -67.3,-61 -68.2,-61 -69.1,-61 -70,-62 -70,-63 -70,-64 -70,-65 -70,-66 -70,-67 -70,-68 -70,-69 -70,-70 -70,-71 -70,-71 -69.1,-71 -68.2,-71 -67.3,-71 -66.4,-71 -65.5,-71 -64.6,-71 -63.7,-71 -62.8,-71 -61.9,-71 -61))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "This collaborative study between the Desert Research Institute, the University of California, Santa Barbara (0529087; Robin Ross), and the University of California, San Diego (0528728; Maria Vernet) will examine the relationship between sea ice extent along the Antarctic Peninsula and the life history of krill (Euphausia superba), by developing, refining, and linking diagnostic datasets and models of phytoplankton decreases in the fall, phytoplankton biomass incorporation into sea ice, sea ice growth dynamics, sea ice algal production and biomass accumulation, and larval krill energetics, condition, and survival. Krill is a key species in the food web of the Southern Ocean ecosystem, and one that is intricately involved with seasonal sea ice dynamics. Results from the Southern Ocean experiment of the Global Ocean Ecosystems Dynamics program (SO-Globec) field work as well as historical information on sea ice dynamics and krill recruitment suggest a shift in the paradigm that all pack ice is equally good krill habitat. SO-Globec is a multidisciplinary effort focused on understanding the physical and biological factors that influence growth, reproduction, recruitment and survival of Antarctic krill (Euphausia superba). The program uses a multi-trophic level approach that includes the predators and competitors of Antarctic krill, represented by other zooplankton, fish, penguins, seals, and cetaceans. This collaborative project is concerned with the synthesis and modeling of lower trophic levels.", "east": -61.0, "geometry": ["POINT(-66 -65.5)"], "keywords": "Bellingshausen Sea; Biota; Oceans; Southern Ocean", "locations": "Bellingshausen Sea; Southern Ocean", "north": -61.0, "nsf_funding_programs": null, "persons": "Quetin, Langdon B.; Ross, Robin Macurda", "project_titles": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "projects": [{"proj_uid": "p0000522", "repository": "USAP-DC", "title": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "uid": "600049", "west": -71.0}, {"awards": "0529666 Fritsen, Christian", "bounds_geometry": ["POLYGON((-180 -39.23,-144 -39.23,-108 -39.23,-72 -39.23,-36 -39.23,0 -39.23,36 -39.23,72 -39.23,108 -39.23,144 -39.23,180 -39.23,180 -44.307,180 -49.384,180 -54.461,180 -59.538,180 -64.615,180 -69.692,180 -74.769,180 -79.846,180 -84.923,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -84.923,-180 -79.846,-180 -74.769,-180 -69.692,-180 -64.615,-180 -59.538,-180 -54.461,-180 -49.384,-180 -44.307,-180 -39.23))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "This collaborative study between the Desert Research Institute, the University of California, Santa Barbara (0529087; Robin Ross), and the University of California, San Diego (0528728; Maria Vernet) will examine the relationship between sea ice extent along the Antarctic Peninsula and the life history of krill (Euphausia superba), by developing, refining, and linking diagnostic datasets and models of phytoplankton decreases in the fall, phytoplankton biomass incorporation into sea ice, sea ice growth dynamics, sea ice algal production and biomass accumulation, and larval krill energetics, condition, and survival. Krill is a key species in the food web of the Southern Ocean ecosystem, and one that is intricately involved with seasonal sea ice dynamics. Results from the Southern Ocean experiment of the Global Ocean Ecosystems Dynamics program (SO-Globec) field work as well as historical information on sea ice dynamics and krill recruitment suggest a shift in the paradigm that all pack ice is equally good krill habitat. SO-Globec is a multidisciplinary effort focused on understanding the physical and biological factors that influence growth, reproduction, recruitment and survival of Antarctic krill (Euphausia superba). The program uses a multi-trophic level approach that includes the predators and competitors of Antarctic krill, represented by other zooplankton, fish, penguins, seals, and cetaceans. It is currently in a synthesis and modeling phase. This collaborative project is concerned with the lower trophic levels, and will be integrated with other synthesis and modeling studies that deal with grazers, predators, and other higher trophic levels.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Bellingshausen Sea; Cryosphere; Oceans; Photosynthetically Active Radiation (par); Sea Ice; Sea Surface; Southern Ocean; Total Integrated Exposure To PAR", "locations": "Bellingshausen Sea; Southern Ocean; Sea Surface", "north": -39.23, "nsf_funding_programs": null, "persons": "Fritsen, Christian", "project_titles": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "projects": [{"proj_uid": "p0000522", "repository": "USAP-DC", "title": "Collaborative Research: U.S. SO GLOBEC Synthesis and Modeling: Timing is Everything: The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "The Dynamic Coupling among Phytoplankton, Ice, Ice Algae and Krill (PIIAK)", "uid": "600050", "west": -180.0}, {"awards": "0542164 Taylor, Michael", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "A focused plan is presented to investigate the role and importance of short period (\u003c1 hour) gravity waves on the dynamics of the Antarctic Mesosphere and Lower Thermosphere (MLT) region (~80-100 km). Excited primarily by deep convection, frontal activity, topography, and strong wind shears in the lower atmosphere, these waves transport energy and momentum upwards where they have a profound influence on the MLT dynamics. Most of the wave forcing is expected to occur at mid-and low-latitudes where such sources predominate. However, short-period waves (exhibiting similar characteristics to mid-latitude events) have now been detected in copious quantities from research sites on the Antarctic Peninsula and the coastal regions exhibiting strong anisotropy in their dominant horizontal motions (and hence their momentum fluxes). Radiosonde measurements have established the existence of ubiquitous gravity wave activity at South Pole but, to date, there have been no detailed measurements of the properties of short-period waves at MLT heights deep in the Antarctic interior. In particular, the South Pole Station is uniquely situated to investigate the filtering and penetration of these waves into the MLT region, a substantial fraction of which may be ducted waves traveling over vast geographic distances (several thousand km). Novel image measurements at South Pole Station combined with existing measurement programs will provide an unprecedented capability for quantifying the role of these gravity waves on the regional MLT dynamics over central Antarctica. This research also contributes to the training and education of both the graduate and undergraduate students.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Atmosphere; Meteorology; Radiosonde; South Pole", "locations": "South Pole; Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "Taylor, Michael", "project_titles": "Quantifying the Role of Short-Period Gravity Waves on the Antarctic Mesospheric Dynamics Using an Advanced Mesospheric Temperature Mapper", "projects": [{"proj_uid": "p0000684", "repository": "USAP-DC", "title": "Quantifying the Role of Short-Period Gravity Waves on the Antarctic Mesospheric Dynamics Using an Advanced Mesospheric Temperature Mapper"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Quantifying the Role of Short-Period Gravity Waves on the Antarctic Mesospheric Dynamics Using an Advanced Mesospheric Temperature Mapper", "uid": "600060", "west": -180.0}, {"awards": "0632389 Murray, Alison", "bounds_geometry": ["POLYGON((-65.3827 -64.4213,-65.13333 -64.4213,-64.88396 -64.4213,-64.63459 -64.4213,-64.38522 -64.4213,-64.13585 -64.4213,-63.88648 -64.4213,-63.63711 -64.4213,-63.38774 -64.4213,-63.13837 -64.4213,-62.889 -64.4213,-62.889 -64.47176,-62.889 -64.52222,-62.889 -64.57268,-62.889 -64.62314,-62.889 -64.6736,-62.889 -64.72406,-62.889 -64.77452,-62.889 -64.82498,-62.889 -64.87544,-62.889 -64.9259,-63.13837 -64.9259,-63.38774 -64.9259,-63.63711 -64.9259,-63.88648 -64.9259,-64.13585 -64.9259,-64.38522 -64.9259,-64.63459 -64.9259,-64.88396 -64.9259,-65.13333 -64.9259,-65.3827 -64.9259,-65.3827 -64.87544,-65.3827 -64.82498,-65.3827 -64.77452,-65.3827 -64.72406,-65.3827 -64.6736,-65.3827 -64.62314,-65.3827 -64.57268,-65.3827 -64.52222,-65.3827 -64.47176,-65.3827 -64.4213))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "The Western Antarctic Peninsula is experiencing one of the most rapid rates of climate warming on Earth, with an increase of 5degrees C in the mean winter temperature in 50 years. Impacts on upper trophic levels are evident, though there have been few, if any studies that have considered the impacts on bacterioplankton in the Southern Ocean. This proposal will characterize the winter bacterioplankton genome, transcriptome, and proteome and discover those features (community composition, genes up-regulated, and proteins expressed) that are essential to winter bacterioplankton survival and livelihood. We have assembled a polar ocean ecology and genomics network including strategic partnerships with Palmer LTER, the British Antarctic Survey\u0027s ocean metagenome program, US and Canadian scientists studying the Arctic Ocean genome, an Australian colleague who specialized in archaeal proteomics, and French colleagues studying Sub-Antarctic and Coastal Adelie Land marine bacterioplankton. The primary objectives of this program are: 1 Describe the differences in diversity and genomic content between austral winter and summer bacterioplankton communities. 2. Investigate the winter-time bacterioplankton growth and cellular signals (mRNA and proteins expressed) in order to understand the specific adaptations key to survival. Our results will extend from the Antarctic to the Arctic - as the cold, dark, carbon-limited deep seas linking these two systems have many common features. Education and outreach activities target (i) undergraduate and graduate students, hopefully including minority students recruited through the Diversity in Research in Environmental and Marine Sciences (DREAMS) Program at VIMS; (ii) a broad audience with our education and outreach partnerships with The Cousteau Society and with the Census for Antarctic Marine Life program. Data and links to external databases will be listed on the http://genex2.dri.edu website. Sequence data will be publicly accessible in GenBank and IMG-M databases.", "east": -62.889, "geometry": ["POINT(-64.13585 -64.6736)"], "keywords": "Antarctica; Antarctic Peninsula; Biota; Chemistry:fluid; Chemistry:Fluid; Oceans; Southern Ocean", "locations": "Antarctica; Southern Ocean; Antarctic Peninsula", "north": -64.4213, "nsf_funding_programs": null, "persons": "Grzymski, Joseph; Murray, Alison", "project_titles": "IPY: Bacterioplankton Genomic Adaptations to Antarctic Winter", "projects": [{"proj_uid": "p0000091", "repository": "USAP-DC", "title": "IPY: Bacterioplankton Genomic Adaptations to Antarctic Winter"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.9259, "title": "IPY: Bacterioplankton Genomic Adaptations to Antarctic Winter", "uid": "600061", "west": -65.3827}, {"awards": "0338163 Leventer, Amy", "bounds_geometry": ["POLYGON((-70.90391 -52.35262,-68.130917 -52.35262,-65.357924 -52.35262,-62.584931 -52.35262,-59.811938 -52.35262,-57.038945 -52.35262,-54.265952 -52.35262,-51.492959 -52.35262,-48.719966 -52.35262,-45.946973 -52.35262,-43.17398 -52.35262,-43.17398 -53.75776,-43.17398 -55.1629,-43.17398 -56.56804,-43.17398 -57.97318,-43.17398 -59.37832,-43.17398 -60.78346,-43.17398 -62.1886,-43.17398 -63.59374,-43.17398 -64.99888,-43.17398 -66.40402,-45.946973 -66.40402,-48.719966 -66.40402,-51.492959 -66.40402,-54.265952 -66.40402,-57.038945 -66.40402,-59.811938 -66.40402,-62.584931 -66.40402,-65.357924 -66.40402,-68.130917 -66.40402,-70.90391 -66.40402,-70.90391 -64.99888,-70.90391 -63.59374,-70.90391 -62.1886,-70.90391 -60.78346,-70.90391 -59.37832,-70.90391 -57.97318,-70.90391 -56.56804,-70.90391 -55.1629,-70.90391 -53.75776,-70.90391 -52.35262))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "The NSF-supported research icebreaker Nathaniel B. Palmer operates year-round in support of the U.S. Antarctic Program, carrying out global change studies in biological, chemical, physical, and oceanographic disciplines. \n This data set consists of underway data from leg NBP0603 on the R/V Nathaniel B. Palmer. This leg started at Punta Arenas, Chile and ended at Punta Arenas, Chile.", "east": -43.17398, "geometry": ["POINT(-57.038945 -59.37832)"], "keywords": "ADCP Acoustic Doppler Current Profiler; Antarctic Peninsula; Biota; Diatom; Electromagnetic Data; Flask Glacier; Foehn Winds; Larsen Ice Shelf; Marine Sediments; NBP0603; Oceans; Physical Ice Properties; R/v Nathaniel B. Palmer; Scar Inlet; Southern Ocean", "locations": "Antarctic Peninsula; Flask Glacier; Larsen Ice Shelf; Southern Ocean; Scar Inlet", "north": -52.35262, "nsf_funding_programs": null, "persons": "Domack, Eugene Walter", "project_titles": "Collaborative Research: Paleohistory of the Larsen Ice Shelf System: Phase II", "projects": [{"proj_uid": "p0000215", "repository": "USAP-DC", "title": "Collaborative Research: Paleohistory of the Larsen Ice Shelf System: Phase II"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -66.40402, "title": "R/V Nathaniel B. Palmer NBP0603 - Paleohistory of the Larsen Ice Shelf System", "uid": "600027", "west": -70.90391}, {"awards": "0442857 Baker, Bill", "bounds_geometry": ["POLYGON((-65 -63,-64.8 -63,-64.6 -63,-64.4 -63,-64.2 -63,-64 -63,-63.8 -63,-63.6 -63,-63.4 -63,-63.2 -63,-63 -63,-63 -63.2,-63 -63.4,-63 -63.6,-63 -63.8,-63 -64,-63 -64.2,-63 -64.4,-63 -64.6,-63 -64.8,-63 -65,-63.2 -65,-63.4 -65,-63.6 -65,-63.8 -65,-64 -65,-64.2 -65,-64.4 -65,-64.6 -65,-64.8 -65,-65 -65,-65 -64.8,-65 -64.6,-65 -64.4,-65 -64.2,-65 -64,-65 -63.8,-65 -63.6,-65 -63.4,-65 -63.2,-65 -63))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Mesoherbivores, and specifically amphipods, are a conspicuous and dominant component of the macroalgal community in Antarctica. Despite their high abundance, the functional ecology, and particularly the trophic relationships of Antarctic amphipods are poorly understood. This project will evaluate the importance of mesograzers (small invertebrate predators approximately 1 to 25 mm in body length) in western Antarctic Peninsula marine communities. This will be accomplished by examining the role of mesoherbivores in structuring macroalgal communities and by elucidating the ecological interactions of mesograzers with a dominant group of benthic macroinvertebrates, the marine sponges. Moreover, chemical studies will be conducted to gain a more thorough understanding of the chemical defenses that Antarctic Peninsula sponges direct towards crustacean mesograzers. Three sets of questions will be addressed concerning the importance of mesograzers, and amphipods in particular, in nearshore habitats of the western Antarctic Peninsula. First, the hypothesis that mesoherbivory is particularly heavy in western Antarctic Peninsula marine communities and has an important influence on algal community structure will be addressed. Initial studies will document which species of amphipods feed in whole or part on microalgae and macroalgae, the incidence and distribution of filamentous endophytes in dominant macroalgae, comparative night time patterns of amphipod abundances on macrophytes, and the role of chemical mediation in these relationships. Second, the broad hypothesis that mesograzers in general, and amphipods in particular, interact with and prey upon sponges to a greater extent than heretofore recognized in Antarctic communities will be tested. The functional basis of these associations will be considered by examining whether the sponges are used as prey, and if so, whether there is evidence that some sponges produce secondary metabolites that show efficacy against mesograzers such as amphipods. Third, the researchers will test the hypotheses that: 1) Antarctic algae and invertebrates biosynthesize secondary metabolites that deter feeding by amphipod predators; and 2) pigments found in three Antarctic sponges are tryptophan catabolites produced as defenses against crustacean predators that impact molting. Evaluation of these hypotheses will be based on isolation and characterization of the specific anti-feeding metabolites, on biosynthetic studies to establish the metabolic origin of the pigments, and on bioassays to establish the chemical defense roles of both groups of compounds. A variety of educational activities will be a major component of this project. Opportunities will be made to support graduate and undergraduate research, both through NSF programs as well as home university-based programs including a number of funded programs that enhance the representation of minorities in the sciences. Through their proven and highly successful interactive web program, the investigators will continue to involve a large numbers of teachers, K-12 students, and other members of the community at large in their scientific endeavors in Antarctica. Moreover, they will actively participate in outreach efforts by presenting numerous talks on their research to school and community groups.", "east": -63.0, "geometry": ["POINT(-64 -64)"], "keywords": "Antarctica; Biota; Oceans; Southern Ocean", "locations": "Antarctica; Southern Ocean", "north": -63.0, "nsf_funding_programs": null, "persons": "Baker, Bill", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula; Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}, {"proj_uid": "p0000475", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula", "uid": "600047", "west": -65.0}, {"awards": "0442769 McClintock, James", "bounds_geometry": ["POLYGON((-64.15 -64.78,-64.132 -64.78,-64.114 -64.78,-64.096 -64.78,-64.078 -64.78,-64.06 -64.78,-64.042 -64.78,-64.024 -64.78,-64.006 -64.78,-63.988 -64.78,-63.97 -64.78,-63.97 -64.784,-63.97 -64.788,-63.97 -64.792,-63.97 -64.796,-63.97 -64.8,-63.97 -64.804,-63.97 -64.808,-63.97 -64.812,-63.97 -64.816,-63.97 -64.82,-63.988 -64.82,-64.006 -64.82,-64.024 -64.82,-64.042 -64.82,-64.06 -64.82,-64.078 -64.82,-64.096 -64.82,-64.114 -64.82,-64.132 -64.82,-64.15 -64.82,-64.15 -64.816,-64.15 -64.812,-64.15 -64.808,-64.15 -64.804,-64.15 -64.8,-64.15 -64.796,-64.15 -64.792,-64.15 -64.788,-64.15 -64.784,-64.15 -64.78))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Mesoherbivores, and specifically amphipods, are a conspicuous and dominant component of the macroalgal community in Antarctica. Despite their high abundance, the functional ecology, and particularly the trophic relationships of Antarctic amphipods are poorly understood. This project will evaluate the importance of mesograzers (small invertebrate predators approximately 1 to 25 mm in body length) in western Antarctic Peninsula marine communities. This will be accomplished by examining the role of mesoherbivores in structuring macroalgal communities and by elucidating the ecological interactions of mesograzers with a dominant group of benthic macroinvertebrates, the marine sponges. Moreover, chemical studies will be conducted to gain a more thorough understanding of the chemical defenses that Antarctic Peninsula sponges direct towards crustacean mesograzers. Three sets of questions will be addressed concerning the importance of mesograzers, and amphipods in particular, in nearshore habitats of the western Antarctic Peninsula. First, the hypothesis that mesoherbivory is particularly heavy in western Antarctic Peninsula marine communities and has an important influence on algal community structure will be addressed. Initial studies will document which species of amphipods feed in whole or part on microalgae and macroalgae, the incidence and distribution of filamentous endophytes in dominant macroalgae, comparative night time patterns of amphipod abundances on macrophytes, and the role of chemical mediation in these relationships. Second, the broad hypothesis that mesograzers in general, and amphipods in particular, interact with and prey upon sponges to a greater extent than heretofore recognized in Antarctic communities will be tested. The functional basis of these associations will be considered by examining whether the sponges are used as prey, and if so, whether there is evidence that some sponges produce secondary metabolites that show efficacy against mesograzers such as amphipods. Third, the researchers will test the hypotheses that: 1) Antarctic algae and invertebrates biosynthesize secondary metabolites that deter feeding by amphipod predators; and 2) pigments found in three Antarctic sponges are tryptophan catabolites produced as defenses against crustacean predators that impact molting. Evaluation of these hypotheses will be based on isolation and characterization of the specific anti-feeding metabolites, on biosynthetic studies to establish the metabolic origin of the pigments, and on bioassays to establish the chemical defense roles of both groups of compounds. A variety of educational activities will be a major component of this project. Opportunities will be made to support graduate and undergraduate research, both through NSF programs as well as home university-based programs including a number of funded programs that enhance the representation of minorities in the sciences. Through their proven and highly successful interactive web program, the investigators will continue to involve a large numbers of teachers, K-12 students, and other members of the community at large in their scientific endeavors in Antarctica. Moreover, they will actively participate in outreach efforts by presenting numerous talks on their research to school and community groups.", "east": -63.97, "geometry": ["POINT(-64.06 -64.8)"], "keywords": "Antarctica; Biota; Oceans; Southern Ocean", "locations": "Southern Ocean; Antarctica", "north": -64.78, "nsf_funding_programs": null, "persons": "McClintock, James; Amsler, Charles", "project_titles": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula; Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing", "projects": [{"proj_uid": "p0010016", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula - continuing"}, {"proj_uid": "p0000475", "repository": "USAP-DC", "title": "Collaborative Research: The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.82, "title": "The Chemical Ecology of Shallow-water Marine Macroalgae and Invertebrates on the Antarctic Peninsula", "uid": "600046", "west": -64.15}, {"awards": "0338087 Scheltema, Rudolf", "bounds_geometry": ["POLYGON((-70 -53,-68.4 -53,-66.8 -53,-65.2 -53,-63.6 -53,-62 -53,-60.4 -53,-58.8 -53,-57.2 -53,-55.6 -53,-54 -53,-54 -54.5,-54 -56,-54 -57.5,-54 -59,-54 -60.5,-54 -62,-54 -63.5,-54 -65,-54 -66.5,-54 -68,-55.6 -68,-57.2 -68,-58.8 -68,-60.4 -68,-62 -68,-63.6 -68,-65.2 -68,-66.8 -68,-68.4 -68,-70 -68,-70 -66.5,-70 -65,-70 -63.5,-70 -62,-70 -60.5,-70 -59,-70 -57.5,-70 -56,-70 -54.5,-70 -53))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Because of extreme isolation of the Antarctic continent since the Early Oligocene, one expects a unique invertebrate benthic fauna with a high degree of endemism. Yet some invertebrate taxa that constitute important ecological components of sedimentary benthic communities include more than 40 percent non-endemic species (e.g., benthic polychaetes). To account for non-endemic species, intermittent genetic exchange must occur between Antarctic and other (e.g. South American) populations. The most likely mechanism for such gene flow, at least for in-faunal and mobile macrobenthos, is dispersal of planktonic larvae across the sub- Antarctic and Antarctic polar fronts. To test for larval dispersal as a mechanism of maintaining genetic continuity across polar fronts, the scientists propose to (1) take plankton samples along transects across Drake passage during both the austral summer and winter seasons while concurrently collecting the appropriate hydrographic data. Such data will help elucidate the hydrographic mechanisms that allow dispersal across Drake Passage. Using a molecular phylogenetic approach, they will (2) compare seemingly identical adult forms from Antarctic and South America continents to identify genetic breaks, historical gene flow, and control for the presence of cryptic species. (3) Similar molecular tools will be used to relate planktonic larvae to their adult forms. Through this procedure, they propose to link the larval forms respectively to their Antarctic or South America origins. The proposed work builds on previous research that provides the basis for this effort to develop a synthetic understanding of historical gene flow and present day dispersal mechanism in South American/Drake Passage/Antarctic Peninsular region. Furthermore, this work represents one of the first attempts to examine recent gene flow in Antarctic benthic invertebrates. Graduate students and a postdoctoral fellow will be trained during this research.", "east": -54.0, "geometry": ["POINT(-62 -60.5)"], "keywords": "Antarctica; Biota; Oceans; R/v Laurence M. Gould; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Southern Ocean; Antarctica", "north": -53.0, "nsf_funding_programs": null, "persons": "Scheltema, Rudolf", "project_titles": "Collaborative Research: Relevance of Planktonic Larval Dispersal to Endemism and Biogeography of Antarctic Benthic Invertebrates", "projects": [{"proj_uid": "p0000189", "repository": "USAP-DC", "title": "Collaborative Research: Relevance of Planktonic Larval Dispersal to Endemism and Biogeography of Antarctic Benthic Invertebrates"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -68.0, "title": "Relevance of Planktonic Larval Dispersal to Endemism and Biogeography of Antarctic Benthic Invertebrates", "uid": "600035", "west": -70.0}, {"awards": "0439906 Koch, Paul", "bounds_geometry": ["POLYGON((162 -72,162.6 -72,163.2 -72,163.8 -72,164.4 -72,165 -72,165.6 -72,166.2 -72,166.8 -72,167.4 -72,168 -72,168 -72.6,168 -73.2,168 -73.8,168 -74.4,168 -75,168 -75.6,168 -76.2,168 -76.8,168 -77.4,168 -78,167.4 -78,166.8 -78,166.2 -78,165.6 -78,165 -78,164.4 -78,163.8 -78,163.2 -78,162.6 -78,162 -78,162 -77.4,162 -76.8,162 -76.2,162 -75.6,162 -75,162 -74.4,162 -73.8,162 -73.2,162 -72.6,162 -72))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "During previous NSF-sponsored research, the PI\u0027s discovered that southern elephant seal colonies once existed along the Victoria Land coast (VLC) of Antarctica, a region where they are no longer observed. Molted seal skin and hair occur along 300 km of coastline, more than 1000 km from any extant colony. The last record of a seal at a former colony site is at ~A.D. 1600. Because abandonment occurred prior to subantarctic sealing, disappearance of the VLC colony probably was due to environmental factors, possibly cooling and encroachment of land-fast, perennial sea ice that made access to haul-out sites difficult. The record of seal inhabitation along the VLC, therefore, has potential as a proxy for climate change. Elephant seals are a predominantly subantarctic species with circumpolar distribution. Genetic studies have revealed significant differentiation among populations, particularly with regard to that at Macquarie I., which is the extant population nearest to the abandoned VLC colony. Not only is the Macquarie population unique genetically, but it is has undergone unexplained decline of 2%/yr over the last 50 years3. In a pilot study, genetic analyses showed a close relationship between the VLC seals and those at Macquarie I. An understanding of the relationship between the two populations, as well as of the environmental pressures that led to the demise of the VLC colonies, will provide a better understanding of present-day population genetic structure, the effect of environmental change on seal populations, and possibly the reasons underlying the modern decline at Macquarie Island. This project addresses several key research problems: (1) Why did elephant seals colonize and then abandon the VLC? (2) What does the elephant seal record reveal about Holocene climate change and sea-ice conditions? (3) What were the foraging strategies of the seals and did these strategies change over time as climate varied? (4) How does the genetic structure of the VLC seals relate to extant populations? (5) How did genetic diversity change over time and with colony decline? (6) Using ancient samples to estimate mtDNA mutation rates, what can be learned about VLC population dynamics over time? (7) What was the ecological relationship between elephant seals and Adelie penguins that occupied the same sites, but apparently at different times? The proposed work includes the professional training of young researchers and incorporation of data into graduate and undergraduate courses.\n\nBecause of extreme isolation of the Antarctic continent since the \nEarly Oligocene, one expects a unique invertebrate benthic fauna with \na high degree of endemism. Yet some invertebrate taxa that constitute \nimportant ecological components of sedimentary benthic communities \ninclude more than 40 percent non-endemic species (e.g., benthic \npolychaetes). To account for non-endemic species, intermittent genetic \nexchange must occur between Antarctic and other (e.g. South American) \npopulations. The most likely mechanism for such gene flow, at least \nfor in-faunal and mobile macrobenthos, is dispersal of planktonic \nlarvae across the sub- Antarctic and Antarctic polar fronts. To test \nfor larval dispersal as a mechanism of maintaining genetic continuity \nacross polar fronts, the scientists propose to (1) take plankton \nsamples along transects across Drake passage during both the austral \nsummer and winter seasons while concurrently collecting the \nappropriate hydrographic data. Such data will help elucidate the \nhydrographic mechanisms that allow dispersal across Drake Passage. \nUsing a molecular phylogenetic approach, they will (2) compare \nseemingly identical adult forms from Antarctic and South America \ncontinents to identify genetic breaks, historical gene flow, and \ncontrol for the presence of cryptic species. (3) Similar molecular \ntools will be used to relate planktonic larvae to their adult forms. \nThrough this procedure, they propose to link the larval forms \nrespectively to their Antarctic or South America origins. The proposed \nwork builds on previous research that provides the basis for this \neffort to develop a synthetic understanding of historical gene flow \nand present day dispersal mechanism in South American/Drake Passage/ \nAntarctic Peninsular region. Furthermore, this work represents one of \nthe first attempts to examine recent gene flow in Antarctic benthic \ninvertebrates. Graduate students and a postdoctoral fellow will be \ntrained during this research\n", "east": 168.0, "geometry": ["POINT(165 -75)"], "keywords": "Biota; Isotope; Penguin; Ross Sea; Seals; Southern Ocean", "locations": "Southern Ocean; Ross Sea", "north": -72.0, "nsf_funding_programs": null, "persons": "Koch, Paul", "project_titles": "Collaborative Research: Abandoned Elephant Seal Colonies in Antarctica: Integration of Genetic, Isotopic, and Geologic Approaches toward Understanding Holocene Environmental Change", "projects": [{"proj_uid": "p0000533", "repository": "USAP-DC", "title": "Collaborative Research: Abandoned Elephant Seal Colonies in Antarctica: Integration of Genetic, Isotopic, and Geologic Approaches toward Understanding Holocene Environmental Change"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Abandoned Elephant Seal Colonies in Antarctica: Integration of Genetic, Isotopic, and Geologic Approaches toward Understanding Holocene Environmental Change", "uid": "600041", "west": 162.0}, {"awards": "0440687 Costa, Daniel", "bounds_geometry": ["POLYGON((-64 -60,-63 -60,-62 -60,-61 -60,-60 -60,-59 -60,-58 -60,-57 -60,-56 -60,-55 -60,-54 -60,-54 -60.4,-54 -60.8,-54 -61.2,-54 -61.6,-54 -62,-54 -62.4,-54 -62.8,-54 -63.2,-54 -63.6,-54 -64,-55 -64,-56 -64,-57 -64,-58 -64,-59 -64,-60 -64,-61 -64,-62 -64,-63 -64,-64 -64,-64 -63.6,-64 -63.2,-64 -62.8,-64 -62.4,-64 -62,-64 -61.6,-64 -61.2,-64 -60.8,-64 -60.4,-64 -60))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "As long-lived animals, marine mammals must be capable of accommodating broad variations in food resources over large spatial and temporal scales. While this is true of all marine mammals, variation in the physical and biological environmental is particularly profound in the Southern Ocean. A basic understanding of the foraging behavior and habitat utilization of pelagic predators requires knowledge of this spatial and temporal variation, coupled with information of how they respond to these changes. Current understanding of these associations is primarily limited to population level studies where animal abundance has been correlated with oceanography. Although these studies are informative, they cannot provide insights into the strategies employed by individual animals nor can they provide insights into the spatial or temporal course of these interactions. Recent technological advances in instrumentation make it possible to extend an understanding beyond the simple linkage of prey and predator distributions with environmental features. The key to understanding the processes that lead to high predator abundance is the identification of the specific foraging behaviors associated with different features of the water column. This study will accomplish these objectives by combining accurate positional data, measures of diving and foraging behavior, animal-derived water-column temperature and salinity data, and available oceanographic data. This project will examine the foraging behavior and habitat utilization of two species of contrasting foraging ecology, the southern elephant seal, Mirounga leonina, and the crabeater seal, Lobodon carcinophagus in the Western Antarctic Peninsula, a region of strong environmental gradients. Although these two species are phylogenetically related, they utilize substantially different but adjacent habitat types. Southern elephant seals are predominantly pelagic, moving throughout the southern ocean, venturing occasionally into the seasonal pack ice whereas crabeater seals range throughout the seasonal pack ice, venturing occasionally into open water. The relationship of specific foraging behaviors and animal movement patterns to oceanographic and bathymetric features develop and test models of the importance of these features in defining habitat use will be determined along with a comparison of how individuals of each species respond to annual variability in the marine environment. The physical oceanography of the Southern Ocean is inherently complex as are the biological processes that are intrinsically linked to oceanographic processes. Significant resources are currently being directed toward developing mathematical models of physical oceanographic processes with the goals of better understanding the role that the Southern Ocean plays in global climate processes, predicting the responses of ocean and global scale processes to climate change, and understanding the linkages between physical and biological oceanographic processes. These efforts have been limited by the scarcity of oceanographic data in the region, especially at high latitudes in the winter months. This study will provide new and significant oceanographic data on temperature and salinity profiles in to further the understanding of the dynamics of the upper water column of west Antarctic Peninsula continental shelf waters. Outreach activities include website development and an association with a marine education program at the Monterrey Bay Aquarium Research Institute.\n", "east": -54.0, "geometry": ["POINT(-59 -62)"], "keywords": "Bellingshausen Sea; Biota; Oceans; Seals; Southern Ocean", "locations": "Southern Ocean; Bellingshausen Sea", "north": -60.0, "nsf_funding_programs": null, "persons": "Klinck, John M.; Crocker, Daniel; Goebel, Michael; Hofmann, Eileen; Costa, Daniel", "project_titles": "Habitat Utilization of Southern Ocean Seals: Foraging Behavior of Crabeater and Elephant Seals Using Novel Methods of Oceanographic Data Collection", "projects": [{"proj_uid": "p0000082", "repository": "USAP-DC", "title": "Habitat Utilization of Southern Ocean Seals: Foraging Behavior of Crabeater and Elephant Seals Using Novel Methods of Oceanographic Data Collection"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.0, "title": "Habitat Utilization of Southern Ocean Seals: Foraging Behavior of Crabeater and Elephant Seals Using Novel Methods of Oceanographic Data Collection", "uid": "600044", "west": -64.0}, {"awards": "0840375 Costa, Daniel", "bounds_geometry": ["POLYGON((-64 -60,-63 -60,-62 -60,-61 -60,-60 -60,-59 -60,-58 -60,-57 -60,-56 -60,-55 -60,-54 -60,-54 -60.4,-54 -60.8,-54 -61.2,-54 -61.6,-54 -62,-54 -62.4,-54 -62.8,-54 -63.2,-54 -63.6,-54 -64,-55 -64,-56 -64,-57 -64,-58 -64,-59 -64,-60 -64,-61 -64,-62 -64,-63 -64,-64 -64,-64 -63.6,-64 -63.2,-64 -62.8,-64 -62.4,-64 -62,-64 -61.6,-64 -61.2,-64 -60.8,-64 -60.4,-64 -60))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Long-lived animals such as elephant seals may endure variation in food resources over large spatial and temporal scales. Understanding how they respond to these fluctuations requires knowledge of how their foraging behavior and habitat utilization varies over time. Advances in satellite-linked data logging have made it possible to correlate the foraging behavior of marine mammals with their physical and chemical environment and provide insight into the mechanisms controlling at-sea movements, foraging behavior and, ultimately, reproductive success of these pelagic predators. In addition, these technological advances enable marine mammals to be used as highly cost-effective platforms from which detailed oceanographic data can be collected on a scale not possible with conventional methods. The project will extend the four-year-time-series collected on the foraging behavior and habitat utilization of southern elephant seal (Mirounga leonina) foraging in the Western Antarctic Peninsula. It also will extend the oceanographic time-series of CTD profiles collected by the elephant seals foraging from the Livingston Island rookery. Seals have been collecting CTD profiles in the vicinity of the Wilkins Ice Shelf (WIS) since 2005. We thus have a 4 year data set that preceding and during the breakup of the WIS that occurred during March 2008. Deployment of additional tags on seals will provide a unique opportunity to collect oceanographic data after the ice shelf has collapsed.", "east": -54.0, "geometry": ["POINT(-59 -62)"], "keywords": "Biota; CTD Data; Oceans; Physical Oceanography; Seals; Southern Ocean", "locations": "Southern Ocean", "north": -60.0, "nsf_funding_programs": null, "persons": "Goebel, Michael; Costa, Daniel", "project_titles": "SGER: Foraging Patterns of Elephant Seals in the Vicinity of the WIlkins Ice Shelf", "projects": [{"proj_uid": "p0000158", "repository": "USAP-DC", "title": "SGER: Foraging Patterns of Elephant Seals in the Vicinity of the WIlkins Ice Shelf"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.0, "title": "SGER: Foraging Patterns of Elephant Seals in the Vicinity of the WIlkins Ice Shelf", "uid": "600108", "west": -64.0}, {"awards": "0230069 Naveen, Ron", "bounds_geometry": ["POLYGON((-180 -60,-144 -60,-108 -60,-72 -60,-36 -60,0 -60,36 -60,72 -60,108 -60,144 -60,180 -60,180 -63,180 -66,180 -69,180 -72,180 -75,180 -78,180 -81,180 -84,180 -87,180 -90,144 -90,108 -90,72 -90,36 -90,0 -90,-36 -90,-72 -90,-108 -90,-144 -90,-180 -90,-180 -87,-180 -84,-180 -81,-180 -78,-180 -75,-180 -72,-180 -69,-180 -66,-180 -63,-180 -60))"], "date_created": "Thu, 01 Jan 2009 00:00:00 GMT", "description": "The Antarctic Site Inventory Project has collected biological data and site-descriptive information in the Antarctic Peninsula region since 1994. This research effort has provided data on those sites which are visited by tourists on shipboard expeditions in the region. The aim is to obtain data on the population status of several key species of Antarctic seabirds, which might be affected by the cumulative impact resulting from visits to the sites. This project will continue the effort by focusing on two heavily-visited Antarctic Peninsula sites: Paulet Island, in the northwestern Weddell Sea and Petermann Island, in the Lemaire Channel near Anvers Island. These sites were selected because both rank among the ten most visited sites in Antarctica each year in terms of numbers of visitors and zodiac landings; both are diverse in species composition, and both are sensitive to potential environmental disruptions from visitors. These data collected focus on two important biological parameters for penguins and blue-eyed shags: (1) breeding population size (number of occupied nests) and (2) breeding success (number of chicks per occupied nests). A long-term data program will be supported, with studies at the two sites over a five-year period. The main focus will be at Petermann Island, selected for intensive study due to its visitor status and location in the region near Palmer Station. This will allow for comparative data with the Palmer Long Term Ecological Research program. Demographic data will be collected in accordance with Standard Methods established by the Convention for the Conservation of Antarctic Marine Living Resources Ecosystem Monitoring Program and thus will be comparable with similar data sets being collected by other international Antarctic Treaty nation research programs. While separating human-induced change from change resulting from a combination of environmental factors will be difficult, this work will provide a first step to identify potential impacts. These long-term data sets will contribute to a better understanding of biological processes in the entire region and will contribute valuable information to be used by the Antarctic Treaty Parties as they address issues in environmental stewardship in Antarctica.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Antarctica; Biota; Penguin; Petermann Island", "locations": "Petermann Island; Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "Naveen, Ronald", "project_titles": "Long-term Data Collection at Select Antarctic Peninsula Visitor Sites", "projects": [{"proj_uid": "p0000122", "repository": "USAP-DC", "title": "Long-term Data Collection at Select Antarctic Peninsula Visitor Sites"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Long-term Data Collection at Select Antarctic Peninsula Visitor Sites", "uid": "600032", "west": -180.0}, {"awards": "0742057 Gallager, Scott", "bounds_geometry": ["POLYGON((-168.291 -64.846,-165.018 -64.846,-161.745 -64.846,-158.472 -64.846,-155.199 -64.846,-151.926 -64.846,-148.653 -64.846,-145.38 -64.846,-142.107 -64.846,-138.834 -64.846,-135.561 -64.846,-135.561 -66.0269,-135.561 -67.2078,-135.561 -68.3887,-135.561 -69.5696,-135.561 -70.7505,-135.561 -71.9314,-135.561 -73.1123,-135.561 -74.2932,-135.561 -75.4741,-135.561 -76.655,-138.834 -76.655,-142.107 -76.655,-145.38 -76.655,-148.653 -76.655,-151.926 -76.655,-155.199 -76.655,-158.472 -76.655,-161.745 -76.655,-165.018 -76.655,-168.291 -76.655,-168.291 -75.4741,-168.291 -74.2932,-168.291 -73.1123,-168.291 -71.9314,-168.291 -70.7505,-168.291 -69.5696,-168.291 -68.3887,-168.291 -67.2078,-168.291 -66.0269,-168.291 -64.846))"], "date_created": "Thu, 01 Jan 2009 00:00:00 GMT", "description": "The research will continue and extend the study in the Southern Ocean that was initiated during the Oden Southern Ocean 2006 expedition in collaboration with Swedish scientist Mellissa Chierici. We will quantify carbon flux through the food web in the marginal ice zone (MIZ) by measuring size fractionated primary and secondary production, grazing and carbon flux through nanoplankton (2-20 um), microplankton (20-200um), and mesoplankton (200-2000 um). Community structure, species abundance and size specific grazing rates will be quantified using a variety of techniques both underway and at ice stations along the MIZ. The proposed cruise track extends across the Drake Passage to the Western Antarctic Peninsula (WAP) with three station transects along a gradient from the open ocean through the marginal ice zone (MIZ) in the Bellinghausen and Amundsen Seas and into the Ross Sea Polynya. Ice stations along each transect will provide material to characterize production associated with annual ice. Underway measurements of primary and secondary production (chlorophyll, CDOM, microplankton, and mesoplankton) and hydrography (temperature, salinity, pH, DO, turbidity) will establish a baseline for future cruises and as support for other projects such as biogeochemical studies on carbon dioxide drawdown and trace metal work on primary production. The outcome of these measurements will be a description of nano to mesoplankton standing stocks, community structure, and carbon flux along the MIZ in the Bellinghausen and Amundsen Seas and the Ross Sea Polynya.", "east": -135.561, "geometry": ["POINT(-151.926 -70.7505)"], "keywords": "Amundsen Sea; Biota; Microbiology; Navigation; Oceans; Oden; OSO2007; Sample/collection Description; Sample/Collection Description; Southern Ocean", "locations": "Amundsen Sea; Southern Ocean", "north": -64.846, "nsf_funding_programs": null, "persons": "Dennett, Mark; Gallager, Scott", "project_titles": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions", "projects": [{"proj_uid": "p0000563", "repository": "USAP-DC", "title": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.655, "title": "SGER: Primary and Secondary Production and Carbon Flux Through the Microbial Community Along the Western Antarctic Marginal Ice Zone on the Oden Southern Ocean 2007 Expeditions", "uid": "600086", "west": -168.291}, {"awards": "XXXXXXX Palais, Julie", "bounds_geometry": null, "date_created": "Mon, 01 Jan 2001 00:00:00 GMT", "description": "Recent changes in the extent and stability of ice shelves in the Antarctic Peninsula prompted NSIDC to begin a monitoring program using data from the AVHRR Polar 1 km Data Set. NSIDC regularly reviews images of those ice shelves considered susceptible to rapid change due to climatic warming, and of several other major shelves that occasionally calve major icebergs.\n\nThe images in this site represent a selected subset of the available scenes, generally the clearest and most informative scenes available. The scenes are derived from either the AVHRR visible (vis) or thermal (temp) channels, enhanced by combining two channels using principal components processing. In the thermal images, bright areas are colder areas. A few additional scenes from other sensors (MODIS, Landsat) are included to provide some supplemental information on ice shelf structure and events.\n\nIf you wish to save an image, you can do so through the \u0027Save image as\u0027 option of the browser\u0027s pop-up menu. For more information contact NSIDC User Services.", "east": null, "geometry": null, "keywords": "Antarctica; AVHRR; Glaciers/ice Sheet; Glaciers/Ice Sheet; Glaciology; Sample/collection Description; Sample/Collection Description; Sea Ice", "locations": "Antarctica", "north": null, "nsf_funding_programs": "Antarctic Glaciology", "persons": "Scambos, Ted; Raup, Bruce H.; Bohlander, Jennifer", "project_titles": null, "projects": null, "repositories": null, "science_programs": null, "south": null, "title": "Images of Antarctic Ice Shelves", "uid": "609102", "west": null}]

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