USAP-DC

{"dp_type": "Dataset", "free_text": "Weddell Sea"}

[{"awards": "AWI_PS129_01 TBD; 2148517 Hancock, Cathrine", "bounds_geometry": ["POLYGON((-34 -72,-32.4 -72,-30.8 -72,-29.2 -72,-27.6 -72,-26 -72,-24.4 -72,-22.799999999999997 -72,-21.2 -72,-19.6 -72,-18 -72,-18 -72.4,-18 -72.8,-18 -73.2,-18 -73.6,-18 -74,-18 -74.4,-18 -74.8,-18 -75.2,-18 -75.6,-18 -76,-19.6 -76,-21.2 -76,-22.8 -76,-24.4 -76,-26 -76,-27.6 -76,-29.200000000000003 -76,-30.8 -76,-32.4 -76,-34 -76,-34 -75.6,-34 -75.2,-34 -74.8,-34 -74.4,-34 -74,-34 -73.6,-34 -73.2,-34 -72.8,-34 -72.4,-34 -72))"], "date_created": "Tue, 26 Nov 2024 00:00:00 GMT", "description": "Trajectory data for APEX floats 9223 and 9224 along Dronning Maud Land and Coats Land in the southern Weddell Sea from Mar 2022 - Feb 2023. The APEX floats were deployed during the Hybrid Antarctic Float Observing System (HAFOS) in the Weddell Sea on expedition PS129 with POLARSTERN. The attached archive contains trajectory data obtained through acoustic tracking using artoa4argo V4.355 (temporal sampling interval: daily).", "east": -18.0, "geometry": ["POINT(-26 -74)"], "keywords": "Antarctica; Continental Slope; Cryosphere; Eddy; Float Trajectory; HAFOS; Weddell Sea", "locations": "Weddell Sea; Antarctica", "north": -72.0, "nsf_funding_programs": "Antarctic Ocean and Atmospheric Sciences", "persons": "Hancock, Cathrine; Boebel, Olaf", "project_titles": "Weddell Gyre Mean Circulation and Eddy Statistics from Floats", "projects": [{"proj_uid": "p0010310", "repository": "USAP-DC", "title": "Weddell Gyre Mean Circulation and Eddy Statistics from Floats"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -76.0, "title": "Trajectories for APEX floats 9223 and 9224 from acoustic tracking using artoa4argo, Mar 2022-Feb 2023", "uid": "601852", "west": -34.0}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POLYGON((162 -75,162.6 -75,163.2 -75,163.8 -75,164.4 -75,165 -75,165.6 -75,166.2 -75,166.8 -75,167.4 -75,168 -75,168 -75.4,168 -75.8,168 -76.2,168 -76.6,168 -77,168 -77.4,168 -77.8,168 -78.2,168 -78.6,168 -79,167.4 -79,166.8 -79,166.2 -79,165.6 -79,165 -79,164.4 -79,163.8 -79,163.2 -79,162.6 -79,162 -79,162 -78.6,162 -78.2,162 -77.8,162 -77.4,162 -77,162 -76.6,162 -76.2,162 -75.8,162 -75.4,162 -75))"], "date_created": "Fri, 04 Oct 2024 00:00:00 GMT", "description": "Weddell seal metabolic hormone data. Body composition data were generated following protocols described in Shero et al. 2014. Serum hormone concentrations were determined using immunoassays. IGF binding protein concentrations were determined using protocols described in Richmond et al. 2010", "east": 168.0, "geometry": ["POINT(165 -77)"], "keywords": "Antarctica; Cryosphere; Hormones; McMurdo Sound; Ross Sea; Weddell Seal", "locations": "Antarctica; Ross Sea; McMurdo Sound", "north": -75.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Kirkham, Amy", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.0, "title": "Weddell seal metabolic hormone data", "uid": "601840", "west": 162.0}, {"awards": "2147553 Rotella, Jay; 1640481 Rotella, Jay", "bounds_geometry": ["POLYGON((162 -75,162.8 -75,163.6 -75,164.4 -75,165.2 -75,166 -75,166.8 -75,167.6 -75,168.4 -75,169.2 -75,170 -75,170 -75.38,170 -75.76,170 -76.14,170 -76.52,170 -76.9,170 -77.28,170 -77.66,170 -78.03999999999999,170 -78.42,170 -78.8,169.2 -78.8,168.4 -78.8,167.6 -78.8,166.8 -78.8,166 -78.8,165.2 -78.8,164.4 -78.8,163.6 -78.8,162.8 -78.8,162 -78.8,162 -78.42,162 -78.03999999999999,162 -77.66,162 -77.28,162 -76.9,162 -76.52,162 -76.14,162 -75.76,162 -75.38,162 -75))"], "date_created": "Fri, 27 Sep 2024 00:00:00 GMT", "description": "The Erebus Bay population of Weddell seals in the Ross Sea of Antarctica is the most southerly breeding population of mammal in the world, closely associated with persistent shore-fast ice, and one that has been intensively studied since 1969. The resulting long-term database, which includes data for over 29,000 marked individuals, contains detailed population information that provides an excellent opportunity to study linkages between environmental conditions and demographic processes in the Antarctic. The study population is of special interest as the Ross Sea is one of the most productive areas of the Southern Ocean and one of the most pristine marine environments on the planet. The study provides long-term demographic data for individual seals. The Access database contains information for 3 types of data on Weddell seals for the period 1969-2023. (1) Mark-recapture Data with resighting records for all individuals tagged in and around the McMurdo Sound area, as well as seals tagged at White Island; (2) Mass Dynamics Data contains physical masses and photographic records and measurements that include the date, ID number, sex, age class, weight (if successfully collected), and perspectives from which photographs were collected for each sampling occurrence; and (3) Research Procedures Data contains records of handling and research procedures conducted on Erebus Bay Weddell seals by various research teams in recent years.\r\n\u003cbr/\u003e\u003cbr/\u003e", "east": 170.0, "geometry": ["POINT(166 -76.9)"], "keywords": "AMD; Amd/Us; Antarctica; Cryosphere; McMurdo Sound; Population Dynamics; USA/NSF; USAP-DC; Weddell Seal", "locations": "Antarctica; McMurdo Sound", "north": -75.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Rotella, Jay", "project_titles": "Collaborative Research: The Drivers and Role of Immigration in the Dynamics of the Largest Population of Weddell Seals in Antarctica under Changing Conditions; The consequences of maternal effects and environmental conditions on offspring success in an Antarctic predator", "projects": [{"proj_uid": "p0010198", "repository": "USAP-DC", "title": "The consequences of maternal effects and environmental conditions on offspring success in an Antarctic predator"}, {"proj_uid": "p0010361", "repository": "USAP-DC", "title": "Collaborative Research: The Drivers and Role of Immigration in the Dynamics of the Largest Population of Weddell Seals in Antarctica under Changing Conditions"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.8, "title": "Demographic data for Weddell Seal colonies in Erebus Bay through the 2023 Antarctic field season", "uid": "601837", "west": 162.0}, {"awards": "0838937 Costa, Daniel; 0838892 Burns, Jennifer; 1853377 Shero, Michelle", "bounds_geometry": ["POLYGON((-180 -72,-179.8 -72,-179.6 -72,-179.4 -72,-179.2 -72,-179 -72,-178.8 -72,-178.6 -72,-178.4 -72,-178.2 -72,-178 -72,-178 -72.7,-178 -73.4,-178 -74.1,-178 -74.8,-178 -75.5,-178 -76.2,-178 -76.9,-178 -77.6,-178 -78.3,-178 -79,-178.2 -79,-178.4 -79,-178.6 -79,-178.8 -79,-179 -79,-179.2 -79,-179.4 -79,-179.6 -79,-179.8 -79,180 -79,178.2 -79,176.4 -79,174.6 -79,172.8 -79,171 -79,169.2 -79,167.4 -79,165.6 -79,163.8 -79,162 -79,162 -78.3,162 -77.6,162 -76.9,162 -76.2,162 -75.5,162 -74.8,162 -74.1,162 -73.4,162 -72.7,162 -72,163.8 -72,165.6 -72,167.4 -72,169.2 -72,171 -72,172.8 -72,174.6 -72,176.4 -72,178.2 -72,-180 -72))"], "date_created": "Fri, 20 Sep 2024 00:00:00 GMT", "description": "Diel vertical migrations (DVM) have been well-documented across numerous taxa, with prey descend through the water column during daylight hours to avoid visual predators and feed at the surface at night. However, the ability of marine mammals such as Weddell seals (Leptonychotes weddellii) to follow prey to depths is likely constrained by limited breath-hold capacities and the physiological consequences of pushing aerobic thresholds. In particular, dives that exceed the aerobic dive limit require exponentially longer surface recuperation times to clear lactate byproducts from circulation. This is time that the animals then cannot spend foraging. In this study, we assess the circadian organization of the Weddell seal\u0027s dive efforts and when animals make their longest/deepest (most \u0027extreme\u0027) dives that far exceed aerobic thresholds. Sixty-two adult Weddell seals were instrumented with satellite linked relay loggers in the Ross Sea to collect behavioral information across the austral winter. Daily activities are likely to shift across the year in a highly-seasonal polar environment, and through this \u0027natural experiment\u0027 we test how free-ranging seals alter foraging behavior during Polar Day and Night (continuous light, LL and dark, DD, respectively) and varying light/dark (LD) cycling across the year.", "east": -178.0, "geometry": ["POINT(172 -75.5)"], "keywords": "Aerobic; Antarctica; Cryosphere; Weddell Seal", "locations": "Antarctica; Antarctica", "north": -72.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Shero, Michelle", "project_titles": "Collaborative Research: Physiological and Genetic Correlates of Reproductive Success in High- versus Low-Quality Weddell seals; Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea", "projects": [{"proj_uid": "p0000661", "repository": "USAP-DC", "title": "Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea"}, {"proj_uid": "p0010369", "repository": "USAP-DC", "title": "Collaborative Research: Physiological and Genetic Correlates of Reproductive Success in High- versus Low-Quality Weddell seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.0, "title": "Weddell seal dive behavior and rhythmicity from 2010-2012 in the Ross Sea", "uid": "601835", "west": 162.0}, {"awards": "2148517 Hancock, Cathrine", "bounds_geometry": ["POLYGON((-60 -56,-51 -56,-42 -56,-33 -56,-24 -56,-15 -56,-6 -56,3 -56,12 -56,21 -56,30 -56,30 -57.8,30 -59.6,30 -61.4,30 -63.2,30 -65,30 -66.8,30 -68.6,30 -70.4,30 -72.2,30 -74,21 -74,12 -74,3 -74,-6 -74,-15 -74,-24 -74,-33 -74,-42 -74,-51 -74,-60 -74,-60 -72.2,-60 -70.4,-60 -68.6,-60 -66.8,-60 -65,-60 -63.2,-60 -61.4,-60 -59.6,-60 -57.8,-60 -56))"], "date_created": "Mon, 09 Jan 2023 00:00:00 GMT", "description": "Trajectories for RAFOS enabled profiling floats created using the acoustic tracking software program Artoa4Argo. The floats were deployed in the Weddell Gyre on Polarstern Cruise ANTXXIV/3. The floats were part of the US ARGO Program and were deployed by the University of Washington (PI: Stephen Riser) to drift in the Weddell Gyre from 2008 to 2012. ", "east": 30.0, "geometry": ["POINT(-15 -65)"], "keywords": "Antarctica; ANTXXIV/3; Argo Float; Artoa4argo; GPS Data; RAFOS; US Argo Program; Weddell Sea", "locations": "Weddell Sea; Antarctica", "north": -56.0, "nsf_funding_programs": "Antarctic Ocean and Atmospheric Sciences", "persons": "Hancock, Cathrine", "project_titles": "Weddell Gyre Mean Circulation and Eddy Statistics from Floats", "projects": [{"proj_uid": "p0010310", "repository": "USAP-DC", "title": "Weddell Gyre Mean Circulation and Eddy Statistics from Floats"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -74.0, "title": "Under ice trajectories for RAFOS enabled profiling floats in the Weddell Gyre", "uid": "601652", "west": -60.0}, {"awards": "1543539 Liwanag, Heather", "bounds_geometry": null, "date_created": "Tue, 13 Dec 2022 00:00:00 GMT", "description": "These data were collected in 2017 and 2019 in McMurdo Sound, Antarctica. Included are reported dose of sedation drugs administered to Weddell seal pups during a longitudinal study at 4 age timepoints during early devleopment. Vital signs including heart rate (HR) and respiration rate (RR) during sedation are included, as are reactions to the drugs, such as if and how many apnea events were recorded, whether an animal exhibited cyanosis. \r\nThis study was conducted with ethical approval from NOAA Fisheries under the Marine Mammal Protection Act (permit # 21006-01), the Antarctic Conservation Act (permit # 2018-013 M#1) and the California Polytechnic University Institutional Animal Care and Use Committee (#1605 and 1904).", "east": null, "geometry": null, "keywords": "Antarctica; McMurdo Sound; Weddell Seal", "locations": "McMurdo Sound; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Pearson, Linnea", "project_titles": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments", "projects": [{"proj_uid": "p0010144", "repository": "USAP-DC", "title": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Sedation dose and response", "uid": "601631", "west": null}, {"awards": "2031442 Learman, Deric", "bounds_geometry": null, "date_created": "Thu, 08 Sep 2022 00:00:00 GMT", "description": "Shelf sediment samples were collected around the Antarctic Peninsular with the mega corer in 2020 (Nov. to Dec.). 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": "1246463 Burns, Jennifer", "bounds_geometry": ["POLYGON((162 -75,162.6 -75,163.2 -75,163.8 -75,164.4 -75,165 -75,165.6 -75,166.2 -75,166.8 -75,167.4 -75,168 -75,168 -75.4,168 -75.8,168 -76.2,168 -76.6,168 -77,168 -77.4,168 -77.8,168 -78.2,168 -78.6,168 -79,167.4 -79,166.8 -79,166.2 -79,165.6 -79,165 -79,164.4 -79,163.8 -79,163.2 -79,162.6 -79,162 -79,162 -78.6,162 -78.2,162 -77.8,162 -77.4,162 -77,162 -76.6,162 -76.2,162 -75.8,162 -75.4,162 -75))"], "date_created": "Tue, 05 Jul 2022 00:00:00 GMT", "description": "The profound impacts that maternal provisioning of finite energy resources has on offspring survival have been extensively studied across mammals. However, in addition to calories, we tested whether high hemoprotein concentrations in diving mammals necessitates exceptional female-to-pup iron transfer. To answer this question adult female Weddell seals (Leptonychotes weddellii) were handled across the austral summer. This included post-partum females during lactation and post-weaning. To demonstrate that any observed changes in iron dynamics were due to lactation, equivalent skip-breeding females (i.e., that did not produce a pup) were also handled. We measured numerous indices of iron mobilization (ferritin, serum iron, total-iron-binding-capacity, transferrin saturation, milk iron concentration), hemoprotein concentrations, and oxygen stores.", "east": 168.0, "geometry": ["POINT(165 -77)"], "keywords": "Aerobic; Antarctica; Dive Capacity; Iron; McMurdo Sound; Weddell Seal", "locations": "Antarctica; McMurdo Sound", "north": -75.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Shero, Michelle", "project_titles": "Collaborative Research: Physiological and Genetic Correlates of Reproductive Success in High- versus Low-Quality Weddell seals; The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0010369", "repository": "USAP-DC", "title": "Collaborative Research: Physiological and Genetic Correlates of Reproductive Success in High- versus Low-Quality Weddell seals"}, {"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -79.0, "title": "Weddell seal iron dynamics and oxygen stores across lactation", "uid": "601587", "west": 162.0}, {"awards": "1743643 Passchier, Sandra", "bounds_geometry": ["POINT(-42.933 -61.849)"], "date_created": "Wed, 22 Jun 2022 00:00:00 GMT", "description": "This dataset contains measurements of major and trace elements on 190 samples of Eocene-Oligocene sediment from Ocean Drilling Program Site 696 drilled in 650 m water depth on the South Orkney Microcontinent. The composition of detrital, biogenic and authigenic sediment components was assessed via whole rock geochemistry of sediment samples. Instrument analysis was completed at Montclair State University.", "east": -42.933, "geometry": ["POINT(-42.933 -61.849)"], "keywords": "Antarctica; Glaciation; IODP 650; IODP 696; Paleoceanography; Provenance; Sediment Core Data; Weathering; Weddell Sea", "locations": "Weddell Sea; Antarctica", "north": -61.849, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Passchier, Sandra; Hojnacki, Victoria; Li, Xiaona; States, Abbey; Lepp, Allison", "project_titles": "Timing and Spatial Distribution of Antarctic Ice Sheet Growth and Sea-ice Formation across the Eocene-Oligocene Transition", "projects": [{"proj_uid": "p0010101", "repository": "USAP-DC", "title": "Timing and Spatial Distribution of Antarctic Ice Sheet Growth and Sea-ice Formation across the Eocene-Oligocene Transition"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -61.849, "title": "Major and trace element analyses of Eocene-Oligocene marine sediments from ODP Site 696, South Orkney Microcontinent", "uid": "601582", "west": -42.933}, {"awards": "1743643 Passchier, Sandra", "bounds_geometry": ["POINT(-42.933 -61.849)"], "date_created": "Tue, 21 Jun 2022 00:00:00 GMT", "description": "This dataset contains measurements of terrigenous particle-size distributions on Eocene-Oligocene sediment from Ocean Drilling Program Site 696 drilled in 650 m water depth on the South Orkney Microcontinent. Carbonate and organic matter were removed through addition of 10mL aliquots of 30% H2O2, 2mL aliquots of 10% HCl to ~50-100mL suspension on a hot plate. Diatoms were generally either absent or present in trace amounts in the Eocene-Oligocene interval and were not removed. Dispersion was through heating with sodium pyrophosphate. Samples were measured on a Malvern Mastersizer 2000 with a Hydro 2000MU (A) accessory, using a Refractive Index of 1.6 (Illite) and an absorption coefficient of 0.9. Results are in (vol. %) per size class, with diameter range equivalent to the diameter of spheres with the same volume as measured particles.", "east": -42.933, "geometry": ["POINT(-42.933 -61.849)"], "keywords": "Antarctica; Glaciation; IODP 696; Marine Geoscience; Marine Sediments; Paleoceanography; Sediment Core Data; Weddell Sea", "locations": "Weddell Sea; Antarctica", "north": -61.849, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Passchier, Sandra; Lepp, Allison; Horowitz Castaldo, Josie; Light, Jennifer", "project_titles": "Timing and Spatial Distribution of Antarctic Ice Sheet Growth and Sea-ice Formation across the Eocene-Oligocene Transition", "projects": [{"proj_uid": "p0010101", "repository": "USAP-DC", "title": "Timing and Spatial Distribution of Antarctic Ice Sheet Growth and Sea-ice Formation across the Eocene-Oligocene Transition"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -61.849, "title": "Particle-size distributions of Eocene-Oligocene sediment from ODP Site 696, South Orkney Microcontinent", "uid": "601581", "west": -42.933}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POINT(165 -77)"], "date_created": "Mon, 09 May 2022 00:00:00 GMT", "description": "This dataset includes dive records from Weddell seals located in McMurdo Sound, Antarctica from the austral summers of 1978, 1979, and 1981 using Kooyman-Billups Time Depth Recorders. The data were recovered from photocopied paper scrolls using a code package (https://doi.org/10.5281/zenodo.14025657). This recovery process involved record scanning, image processing, and bias correction such that the historic data are directly comparable with dive data from modern instruments. This dataset contains the scanned images of the paper dive records (KBTDR_record_scans) and comma-separated value files of the dive data after recovery (KBTDR_data). Only records from McMurdo Sound were recovered, but record scans from Terra Nova Bay and White Island are also provided for future long-term studies on diving behavior. ", "east": 165.0, "geometry": ["POINT(165 -77)"], "keywords": "Antarctica; Biota; Diving Behavior; McMurdo Sound; Weddell Seal", "locations": "Antarctica; McMurdo Sound", "north": -77.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Tsai, EmmaLi", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.0, "title": "1970s - 1980s Kooyman-Billups TDR Dive Records from Weddell Seals in McMurdo Sound", "uid": "601560", "west": 165.0}, {"awards": "1543539 Liwanag, Heather", "bounds_geometry": null, "date_created": "Fri, 18 Feb 2022 00:00:00 GMT", "description": "Oxygen consumption of Weddell seal pups (n = 8) placed in a metabolic chamber filed with air or water. Data were collected during 2017 and 2019. Each pup was measured every 2 weeks starting from 1 week of age to 7 weeks of age, resulting in 4 age timepoints. ", "east": null, "geometry": null, "keywords": "Antarctica; McMurdo Sound; Metabolic Rate; Thermoregulation; Weddell Seal", "locations": "McMurdo Sound; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Pearson, Linnea", "project_titles": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments", "projects": [{"proj_uid": "p0010144", "repository": "USAP-DC", "title": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "metabolic measurements", "uid": "601524", "west": null}, {"awards": "1543539 Liwanag, Heather", "bounds_geometry": ["POINT(166 -77)"], "date_created": "Fri, 26 Feb 2021 00:00:00 GMT", "description": "This dataset contains dive records from 18 Weddell seal pups collected during 2017 and 2019. Additionally, there are weather data taken during the same time period from a temporary weather station at Turtle Rock.", "east": 166.0, "geometry": ["POINT(166 -77)"], "keywords": "Antarctica; McMurdo Sound; Weddell Seal", "locations": "Antarctica; McMurdo Sound", "north": -77.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Pearson, Linnea; Weitzner, Emma; Liwanag, Heather", "project_titles": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments", "projects": [{"proj_uid": "p0010144", "repository": "USAP-DC", "title": "RUI: Growing Up on Ice: Physiological Adaptations and Developmental Plasticity in Weddell Seal Pups Across Two Extreme Physical Environments"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.0, "title": "TDR and weather data", "uid": "601435", "west": 166.0}, {"awards": "1644196 Cziko, Paul", "bounds_geometry": ["POINT(166.6645 -77.851)"], "date_created": "Tue, 29 Dec 2020 00:00:00 GMT", "description": "Broadband underwater acoustic recordings from the McMurdo Oceanographic Observatory mooring near the seaward terminus of the McMurdo Station seawater intake jetty. An omnidirectional Ocean Sonics icListen hydrophone (SB2-ETH, SN 1713) recorded continuously at 512 kilosamples/second (256 kHz Nyquist frequency; 24 bit) for 2 years. The hydrophone was mounted vertically on a steel strut (insulated with rubber sheet) at about 70 cm above the mud/gravel seabed at 21m deep, with the sloping 45\u00b0 rubble face of the jetty just behind the hydrophone. Temporal coverage is \u003e90%, with gaps and truncated files arising due to network and power outages and software bugs. The audio recordings are 10 minute WAV files, compressed using the lossless FLAC code (Free Lossless Audio Codec, xiph.org; about 33MB of data/minute compressed; 100MB/min uncompressed). The hydrophone was under thick (to 3 m) sea ice cover for the majority of the dataset. The majority of the recorded biological sounds were produced by Weddell seals. Orca were present intermittently (~10 days total) in January-March in both summers. Known non-biological sounds include irregular low-intensity, broad-spectrum clicks and cracks from the sea ice cover, occasional wind noise, a 1.5-s gurgle with components to 200kHz every 90s from the CTD\u2019s pump, a broad-spectrum mechanical sound for 3 min every 4 h from the observatory\u0027s underwater camera cleaning system, low-intensity whines (about 18, 58, 83, and 130 kHz, though variable over the dataset) thought to be from the station seawater pumps (\u003e100 m away within the jetty\u2019s well casing), and intermittent noises from tracked-vehicles and helicopters (September\u2013February), SCUBA divers (October\u2013December), and ships (January). Given hosting limitations, only every 6th file (roughly 10min/hour) has been archived here. Additional data can be obtained by contacting the primary author of the dataset, who will maintain it for as long as possible. Audio spectrogram images (PNGs) at three frequency ranges (three stacked panels per image, upper limits of 2.5, 25, and 256 kHz) from the entire dataset (all data, not subsampled) are also archived separately.", "east": 166.6645, "geometry": ["POINT(166.6645 -77.851)"], "keywords": "Antarctica; Bioacoustics; Biota; Hydroacoustics; Killer Whales; Leptonychotes Weddellii; McMurdo Sound; Oceans; Orcinus Orca; Sea Ice; Weddell Seal; Whales", "locations": "McMurdo Sound; Antarctica", "north": -77.851, "nsf_funding_programs": "Antarctic Instrumentation and Support", "persons": "Cziko, Paul", "project_titles": "Habitat Severity and Internal Ice in Antarctic Notothenioid Fishes", "projects": [{"proj_uid": "p0010147", "repository": "USAP-DC", "title": "Habitat Severity and Internal Ice in Antarctic Notothenioid Fishes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.851, "title": "Long-term broadband underwater acoustic recordings from McMurdo Sound, Antarctica (2017-2019)", "uid": "601416", "west": 166.6645}, {"awards": "1724670 Williams, Trevor", "bounds_geometry": ["POLYGON((-50 -62,-49 -62,-48 -62,-47 -62,-46 -62,-45 -62,-44 -62,-43 -62,-42 -62,-41 -62,-40 -62,-40 -62.3,-40 -62.6,-40 -62.9,-40 -63.2,-40 -63.5,-40 -63.8,-40 -64.1,-40 -64.4,-40 -64.7,-40 -65,-41 -65,-42 -65,-43 -65,-44 -65,-45 -65,-46 -65,-47 -65,-48 -65,-49 -65,-50 -65,-50 -64.7,-50 -64.4,-50 -64.1,-50 -63.8,-50 -63.5,-50 -63.2,-50 -62.9,-50 -62.6,-50 -62.3,-50 -62))"], "date_created": "Mon, 05 Oct 2020 00:00:00 GMT", "description": "This dataset contains 40Ar/39Ar measurements on detrital mineral grains from ice-rafted detritus from sediment core PS1575-1 in the NW Weddell Sea. The depositional age of the sediments is approx. 0 to 300 ka. ", "east": -40.0, "geometry": ["POINT(-45 -63.5)"], "keywords": "40Ar/39Ar Thermochronology; Antarctica; Argon; Chemistry:sediment; Chemistry:Sediment; Detrital Minerals; Glaciers/ice Sheet; Glaciers/Ice Sheet; Marine Geoscience; Mass Spectrometer; Provenance; R/v Polarstern; Sediment Core Data; Subglacial Till; Till; Weddell Sea", "locations": "Antarctica; Weddell Sea", "north": -62.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Williams, Trevor", "project_titles": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance", "projects": [{"proj_uid": "p0010128", "repository": "USAP-DC", "title": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Argon thermochronological data on detrital mineral grains from the Weddell Sea embayment", "uid": "601379", "west": -50.0}, {"awards": "1724670 Williams, Trevor", "bounds_geometry": ["POLYGON((-65 -74,-61 -74,-57 -74,-53 -74,-49 -74,-45 -74,-41 -74,-37 -74,-33 -74,-29 -74,-25 -74,-25 -74.6,-25 -75.2,-25 -75.8,-25 -76.4,-25 -77,-25 -77.6,-25 -78.2,-25 -78.8,-25 -79.4,-25 -80,-29 -80,-33 -80,-37 -80,-41 -80,-45 -80,-49 -80,-53 -80,-57 -80,-61 -80,-65 -80,-65 -79.4,-65 -78.8,-65 -78.2,-65 -77.6,-65 -77,-65 -76.4,-65 -75.8,-65 -75.2,-65 -74.6,-65 -74))"], "date_created": "Mon, 05 Oct 2020 00:00:00 GMT", "description": "This dataset contains 40Ar/39Ar measurements on detrital mineral grains from subglacial till and proximal glacimarine sediment from nine sediment cores along the front of the Filchner and Ronne Ice Shelves. ", "east": -25.0, "geometry": ["POINT(-45 -77)"], "keywords": "40Ar/39Ar Thermochronology; Antarctica; Argon; Chemistry:sediment; Chemistry:Sediment; Detrital Minerals; Glaciers/ice Sheet; Glaciers/Ice Sheet; Marine Sediments; Mass Spectrometer; Provenance; R/v Polarstern; Sediment Core Data; Subglacial Till; Till; Weddell Sea", "locations": "Weddell Sea; Antarctica", "north": -74.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Williams, Trevor", "project_titles": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance", "projects": [{"proj_uid": "p0010128", "repository": "USAP-DC", "title": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -80.0, "title": "Argon thermochronological data on detrital mineral grains from the Weddell Sea embayment", "uid": "601378", "west": -65.0}, {"awards": "1724670 Williams, Trevor", "bounds_geometry": ["POLYGON((-70 -80,-65 -80,-60 -80,-55 -80,-50 -80,-45 -80,-40 -80,-35 -80,-30 -80,-25 -80,-20 -80,-20 -80.6,-20 -81.2,-20 -81.8,-20 -82.4,-20 -83,-20 -83.6,-20 -84.2,-20 -84.8,-20 -85.4,-20 -86,-25 -86,-30 -86,-35 -86,-40 -86,-45 -86,-50 -86,-55 -86,-60 -86,-65 -86,-70 -86,-70 -85.4,-70 -84.8,-70 -84.2,-70 -83.6,-70 -83,-70 -82.4,-70 -81.8,-70 -81.2,-70 -80.6,-70 -80))"], "date_created": "Mon, 05 Oct 2020 00:00:00 GMT", "description": "This dataset contains 40Ar/39Ar measurements on detrital mineral grains from till in modern moraines at the edges of the Institute, Foundation, Academy, Recovery, and the Slessor glaciers / ice streams.", "east": -20.0, "geometry": ["POINT(-45 -83)"], "keywords": "40Ar/39Ar Thermochronology; Antarctica; Argon; Chemistry:sediment; Chemistry:Sediment; Detrital Minerals; Glaciers/ice Sheet; Glaciers/Ice Sheet; Marine Sediments; Mass Spectrometer; Provenance; R/v Polarstern; Sediment Core Data; Subglacial Till; Till; Weddell Sea", "locations": "Antarctica; Weddell Sea", "north": -80.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Williams, Trevor", "project_titles": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance", "projects": [{"proj_uid": "p0010128", "repository": "USAP-DC", "title": "Collaborative Research: Deglacial Ice Dynamics in the Weddell Sea Embayment using Sediment Provenance"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -86.0, "title": "Argon thermochronological data on detrital mineral grains from the Weddell Sea embayment", "uid": "601377", "west": -70.0}, {"awards": "1826712 McMahon, Kelton; 1443424 McMahon, Kelton; 1443386 Emslie, Steven; 1443585 Polito, Michael", "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": "Antarctic Peninsula; Antarctica; Weddell Sea", "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": "0337159 McPhee, Miles", "bounds_geometry": ["POLYGON((-2 -62,-1 -62,0 -62,1 -62,2 -62,3 -62,4 -62,5 -62,6 -62,7 -62,8 -62,8 -62.42,8 -62.84,8 -63.26,8 -63.68,8 -64.1,8 -64.52,8 -64.94,8 -65.36,8 -65.78,8 -66.2,7 -66.2,6 -66.2,5 -66.2,4 -66.2,3 -66.2,2 -66.2,1 -66.2,0 -66.2,-1 -66.2,-2 -66.2,-2 -65.78,-2 -65.36,-2 -64.94,-2 -64.52,-2 -64.1,-2 -63.68,-2 -63.26,-2 -62.84,-2 -62.42,-2 -62))"], "date_created": "Thu, 25 Jun 2020 00:00:00 GMT", "description": "This data set was acquired with a ADCP Sonar and CTD during Nathaniel B. Palmer expedition NBP0506 conducted in 2005 (Chief Scientist: Dr. Miles McPhee). These data files are of MATLAB format and include Turbulence, Salinity, and Temperature data that have not been processed. Data were acquired as part of the project(s): Maud rise Non-linear Equation of State Study, and funding was provided by NSF grant(s): ANT03-37159.", "east": 8.0, "geometry": ["POINT(3 -64.1)"], "keywords": "ADCP Acoustic Doppler Current Profiler; Antarctica; CTD; Maud Rise; NBP0506; Physical Oceanography; R/v Nathaniel B. Palmer; Salinity; Southern Ocean; Temperature; Turbulance; Weddell Sea", "locations": "Maud Rise; Antarctica; Southern Ocean; Weddell Sea; Antarctica", "north": -62.0, "nsf_funding_programs": "Antarctic Ocean and Atmospheric Sciences", "persons": "McPhee, Miles G.", "project_titles": "Collaborative Research: The Maud Rise Nonlinear Equation of State Study (MaudNESS)", "projects": [{"proj_uid": "p0000579", "repository": "USAP-DC", "title": "Collaborative Research: The Maud Rise Nonlinear Equation of State Study (MaudNESS)"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -66.2, "title": "Processed ADCP Sonar and CTD Data from the Maud Rise acquired during the Nathaniel B. Palmer expedition NBP0506", "uid": "601342", "west": -2.0}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POINT(165 -77)"], "date_created": "Tue, 23 Jun 2020 00:00:00 GMT", "description": "For Figures 2 and 4 In Beltran et al. PNAS", "east": 165.0, "geometry": ["POINT(165 -77)"], "keywords": "Animal Behavior Observation; Antarctica; Biota; McMurdo Sound; Ross Sea; Seal Dive Data; Weddell Seal", "locations": "Ross Sea; Antarctica; McMurdo Sound", "north": -77.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.0, "title": "Seasonal Dive Data ", "uid": "601338", "west": 165.0}, {"awards": "9725374 Bell, Robin", "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": "Fri, 17 Apr 2020 00:00:00 GMT", "description": "This data set was acquired with a ship-based Gravimeter assembled as part of the 1990 ADGRAV data compilation. AWI data sources provided by Dr. Wilfried Jokat. These data files are of Text File format and include Gravity Free Air Anomaly data and were processed after data collection.", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "ADGRAV; Antarctica; Geology/Geophysics - Other; Gravimeter; Gravity; Marine Geoscience; R/v Polarstern; Weddell Sea", "locations": "Antarctica; Antarctica; Weddell Sea", "north": -60.0, "nsf_funding_programs": "Antarctic Earth Sciences", "persons": "Bell, Robin; Jokat, Wilfred", "project_titles": "The Development of a New Generation Gravity Map of Antarctica", "projects": [{"proj_uid": "p0010092", "repository": "USAP-DC", "title": "The Development of a New Generation Gravity Map of Antarctica"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "AWI processed ship-based Gravimeter Data from the Antarctica assembled as part of the ADGRAV Data Compilation (1990)", "uid": "601277", "west": -180.0}, {"awards": "1822289 Vernet, Maria", "bounds_geometry": ["POLYGON((-59.402149 -62.131908,-58.9639887 -62.131908,-58.5258284 -62.131908,-58.0876681 -62.131908,-57.6495078 -62.131908,-57.2113475 -62.131908,-56.7731872 -62.131908,-56.3350269 -62.131908,-55.8968666 -62.131908,-55.4587063 -62.131908,-55.020546 -62.131908,-55.020546 -62.384829,-55.020546 -62.63775,-55.020546 -62.890671,-55.020546 -63.143592,-55.020546 -63.396513,-55.020546 -63.649434,-55.020546 -63.902355,-55.020546 -64.155276,-55.020546 -64.408197,-55.020546 -64.661118,-55.4587063 -64.661118,-55.8968666 -64.661118,-56.3350269 -64.661118,-56.7731872 -64.661118,-57.2113475 -64.661118,-57.6495078 -64.661118,-58.0876681 -64.661118,-58.5258284 -64.661118,-58.9639887 -64.661118,-59.402149 -64.661118,-59.402149 -64.408197,-59.402149 -64.155276,-59.402149 -63.902355,-59.402149 -63.649434,-59.402149 -63.396513,-59.402149 -63.143592,-59.402149 -62.890671,-59.402149 -62.63775,-59.402149 -62.384829,-59.402149 -62.131908))"], "date_created": "Mon, 29 Apr 2019 00:00:00 GMT", "description": "Marine ecosystems under large ice shelves are thought to contain sparse, low-diversity plankton and seafloor communities due the low supply of food from productive sunlight waters. Past studies have shown sub-ice shelf ecosystems to change in response to altered oceanographic processes resulting from ice-shelve retreat. However, information on community changes and ecosystem structure under ice shelves are limited because sub-ice-shelf ecosystems have either been sampled many years after ice-shelf breakout, or have been sampled through small boreholes, yielding extremely limited spatial information. The recent breakout of the A-68 iceberg from the Larsen C ice shelf in the western Weddell Sea provides an opportunity to use a ship-based study to evaluate benthic communities and water column characteristics in an area recently vacated by a large overlying ice shelf. The opportunity will allow spatial assessments at the time of transition from an under ice-shelf environment to one initially exposed to conditions more typical of a coastal Antarctic marine setting. \r\n\r\n\r\n\r\nThis RAPID project will help determine the state of a coastal Antarctic ecosystem newly exposed from ice-shelf cover and will aid in understanding of rates of community change during transition. The project will conduct a 10-day field program, allowing contrasts to be made of phytoplankton and seafloor megafaunal communities in areas recently exposed by ice-shelf loss to areas exposed for many decades. The project will be undertaken in a collaborative manner with the South Korean Antarctic Agency, KOPRI, by participating in a cruise in March/May 2018. Combining new information in the area of Larsen C with existing observations after the Larsen A and B ice shelf breakups further to the north, the project is expected to generate a dataset that can elucidate fundamental processes of planktonic and benthic community development in transition from food-poor to food-rich ecosystems. The project will provide field experience to two graduate students, a post-doctoral associate and an undergraduate student. Material from the project will be incorporated into graduate courses and the project will communicate daily work and unfolding events through social media and blogs while they explore this area of the world that is largely underexplored.", "east": -55.020546, "geometry": ["POINT(-57.2113475 -63.396513)"], "keywords": "Antarctica; Biota; Chlorophyll; CTD; Glacier; Iceberg; Ice Shelf; Larsen C Ice Shelf; Oceans; Physical Oceanography; Phytoplankton; Sample Location; Sea Ice; Southern Ocean; Station List", "locations": "Larsen C Ice Shelf; Antarctica; Southern Ocean", "north": -62.131908, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Pan, B. Jack; Vernet, Maria", "project_titles": "RAPID: Collaborative Research: Marine Ecosystem Response to the Larsen C Ice-Shelf Breakout: \"Time zero\"", "projects": [{"proj_uid": "p0010029", "repository": "USAP-DC", "title": "RAPID: Collaborative Research: Marine Ecosystem Response to the Larsen C Ice-Shelf Breakout: \"Time zero\""}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.661118, "title": "CTD stations and logs for Araon 2018 ANA08D expedition to Larson C", "uid": "601178", "west": -59.402149}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": null, "date_created": "Sat, 24 Nov 2018 00:00:00 GMT", "description": "We examined the influence of sea ice break-out on seasonal diving patterns and diet of a top predator, the Weddell seal, to understand how phytoplankton blooms impact the vertical distribution of the food web. We captured female seals during the November and December lactation period and attached a LOTEK LAT1800 time-depth recorder (TDR) flipper tag with a 6 second sampling interval. Data were processed using the Iknos toolbox in MATLAB. Benthic dives (1% of all dives) were excluded from analyses because we were interested in quantifying seasonal changes in mid-water dives. Thus, we analyzed dives from 59 Weddell seals to characterize the diving depth and foraging effort of each seal across the austral summer over four years. We characterized seasonal changes in diving depth by calculating the mean across all seals of the maximum dive depth on each day for each seal. For more information see: Beltran, R. S. Bridging the gap between pupping and molting phenology: behavioral and ecological drivers in Weddell seals PhD thesis, University of Alaska Fairbanks, (2018).", "east": null, "geometry": null, "keywords": "Antarctica; Biota; Ross Sea; Seals; Southern Ocean; Weddell Seal", "locations": "Southern Ocean; Ross Sea; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Beltran, Roxanne; Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Weddell seal summer diving behavior", "uid": "601137", "west": null}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POLYGON((-180 -76,-177 -76,-174 -76,-171 -76,-168 -76,-165 -76,-162 -76,-159 -76,-156 -76,-153 -76,-150 -76,-150 -76.2,-150 -76.4,-150 -76.6,-150 -76.8,-150 -77,-150 -77.2,-150 -77.4,-150 -77.6,-150 -77.8,-150 -78,-153 -78,-156 -78,-159 -78,-162 -78,-165 -78,-168 -78,-171 -78,-174 -78,-177 -78,180 -78,178 -78,176 -78,174 -78,172 -78,170 -78,168 -78,166 -78,164 -78,162 -78,160 -78,160 -77.8,160 -77.6,160 -77.4,160 -77.2,160 -77,160 -76.8,160 -76.6,160 -76.4,160 -76.2,160 -76,162 -76,164 -76,166 -76,168 -76,170 -76,172 -76,174 -76,176 -76,178 -76,-180 -76))"], "date_created": "Thu, 08 Nov 2018 00:00:00 GMT", "description": "This dataset includes measurements of cortisol levels (pg/mg) extracted from Weddell Seal fur samples collected from adult females in colonies in the Erebus Bay region of Antarctica during 4 austral field seasons between November 2013 and February 2017. Observations recorded include body mass, body composition, reproductive status.", "east": 160.0, "geometry": ["POINT(-175 -77)"], "keywords": "Antarctica; Biota; Cortisol; Fur; Ross Sea; Seals; Southern Ocean; Visual Observations; Weddell Seal", "locations": "Southern Ocean; Antarctica; Ross Sea", "north": -76.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Cortisol levels in Weddell seal fur ", "uid": "601134", "west": -150.0}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POLYGON((164 -76,164.2 -76,164.4 -76,164.6 -76,164.8 -76,165 -76,165.2 -76,165.4 -76,165.6 -76,165.8 -76,166 -76,166 -76.2,166 -76.4,166 -76.6,166 -76.8,166 -77,166 -77.2,166 -77.4,166 -77.6,166 -77.8,166 -78,165.8 -78,165.6 -78,165.4 -78,165.2 -78,165 -78,164.8 -78,164.6 -78,164.4 -78,164.2 -78,164 -78,164 -77.8,164 -77.6,164 -77.4,164 -77.2,164 -77,164 -76.8,164 -76.6,164 -76.4,164 -76.2,164 -76))"], "date_created": "Tue, 30 Oct 2018 00:00:00 GMT", "description": "All sightings of known, tagged, Weddell seals during molt seasons of Austral summers 2013, 14 15, and 2016. Seals that were sighted but for which molt status could not be determined are not included in this dataset. Seals without tags or IDs were not included. ", "east": 166.0, "geometry": ["POINT(165 -77)"], "keywords": "Antarctica; Biota; Ross Sea; Seals; Visual Observations; Weddell Seal", "locations": "Antarctica; Ross Sea", "north": -76.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Weddell Seal Molt Survey Data", "uid": "601133", "west": 164.0}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": null, "date_created": "Mon, 22 Oct 2018 00:00:00 GMT", "description": "Animals can respond to dynamic environments through phenological plasticity of life history events; however, changes in one part of the annual cycle can diminish the success of subsequent life history events. Our aims were to determine the associations between reproduction and moult phenology across years and to quantify phenological plasticity across varying environmental conditions. We conducted demographic surveys of 4,252 flipper-tagged Weddell seals (Leptonychotes weddellii) in the Ross Sea, Antarctica during four austral summers. At each sighting, seals were assigned a moult code based on the visible presence of new fur, and the start date of each animal\u2019s moult was back-calculated. This dataset contains data on pupping and moult timing for each animal used to address this question.", "east": null, "geometry": null, "keywords": "Antarctica; B-292-M; Biota; Ross Sea; Seals; Southern Ocean; Weddell Seal", "locations": "Southern Ocean; Ross Sea; Antarctica", "north": null, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": null, "title": "Weddell Seal Molt Phenology Dataset", "uid": "601131", "west": null}, {"awards": "1141326 Rotella, Jay; 1640481 Rotella, Jay", "bounds_geometry": ["POLYGON((162 -75,162.8 -75,163.6 -75,164.4 -75,165.2 -75,166 -75,166.8 -75,167.6 -75,168.4 -75,169.2 -75,170 -75,170 -75.38,170 -75.76,170 -76.14,170 -76.52,170 -76.9,170 -77.28,170 -77.66,170 -78.03999999999999,170 -78.42,170 -78.8,169.2 -78.8,168.4 -78.8,167.6 -78.8,166.8 -78.8,166 -78.8,165.2 -78.8,164.4 -78.8,163.6 -78.8,162.8 -78.8,162 -78.8,162 -78.42,162 -78.03999999999999,162 -77.66,162 -77.28,162 -76.9,162 -76.52,162 -76.14,162 -75.76,162 -75.38,162 -75))"], "date_created": "Tue, 02 Oct 2018 00:00:00 GMT", "description": "The Access database contains information for 3 types of data on Weddell seals for the period 1969-2017. (1) Mark-recapture Data with 278,723 resighting records for 25,589 different individuals tagged in and around the McMurdo Sound area, as well as 740 records from 162 seals tagged at White Island; (2) Mass Dynamics Data contains 5,737 physical masses and 1,271 photographic records and measurements that include the date, ID number, sex, age class, weight (if successfully collected), and perspectives from which photographs were collected for each sampling occurrence; and (3) Research Procedures Data contains 1,005 records of handling and research procedures conducted on Erebus Bay Weddell seals by various research teams in recent years.", "east": 170.0, "geometry": ["POINT(166 -76.9)"], "keywords": "Antarctica; Biota; Sea Ice", "locations": "Antarctica", "north": -75.0, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Rotella, Jay", "project_titles": "The Demographic Consequences of Environmental Variability and Individual Heterogeneity in Life-history Tactics of a Long-lived Antarctic Marine Predator", "projects": [{"proj_uid": "p0000299", "repository": "USAP-DC", "title": "The Demographic Consequences of Environmental Variability and Individual Heterogeneity in Life-history Tactics of a Long-lived Antarctic Marine Predator"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.8, "title": "Demographic data for Weddell Seal colonies in Erebus Bay through the 2017 Antarctic field season", "uid": "601125", "west": 162.0}, {"awards": "1443554 Buys, Emmanuel", "bounds_geometry": ["POLYGON((166.163 -76.665,166.2635 -76.665,166.364 -76.665,166.4645 -76.665,166.565 -76.665,166.6655 -76.665,166.766 -76.665,166.8665 -76.665,166.967 -76.665,167.0675 -76.665,167.168 -76.665,167.168 -76.782,167.168 -76.899,167.168 -77.016,167.168 -77.133,167.168 -77.25,167.168 -77.367,167.168 -77.484,167.168 -77.601,167.168 -77.718,167.168 -77.835,167.0675 -77.835,166.967 -77.835,166.8665 -77.835,166.766 -77.835,166.6655 -77.835,166.565 -77.835,166.4645 -77.835,166.364 -77.835,166.2635 -77.835,166.163 -77.835,166.163 -77.718,166.163 -77.601,166.163 -77.484,166.163 -77.367,166.163 -77.25,166.163 -77.133,166.163 -77.016,166.163 -76.899,166.163 -76.782,166.163 -76.665))"], "date_created": "Sat, 27 May 2017 00:00:00 GMT", "description": "The Weddell seal is a champion diving mammal - key elements of their physiological specializations to breath-hold are their ability for remarkable adjustment of their heart and blood vessel system, coordinating blood pressure and flow to specific body regions based on their metabolic requirements, and their ability to sustain periods without oxygen. The goal of this study is to unravel the molecular mechanisms underlying the dive response, specifically, to study a signaling pathway that coordinates local blood flow. This dataset identifies what animals were sampled and the details of what biosamples were collected to test the hypothesis that signaling modifications prevent local blood vessel changes under low oxygen conditions, thereby allowing the centrally mediated diving reflex to override local perfusion control. The metadata also details cryopreserved cells and cell lines that can be used to study the molecular effects of low oxygen conditions in the laboratory", "east": 167.168, "geometry": ["POINT(166.6655 -77.25)"], "keywords": "Antarctica; Biota; McMurdo Sound; Ross Sea; Sample/collection Description; Sample/Collection Description; Seals", "locations": "Antarctica; McMurdo Sound; Ross Sea", "north": -76.665, "nsf_funding_programs": null, "persons": "Hindle, Allyson; Buys, Emmanuel", "project_titles": "Unraveling the Genomic and Molecular Basis of the Dive Response: Nitric Oxide Signaling and Vasoregulation in the Weddell Seal", "projects": [{"proj_uid": "p0000072", "repository": "USAP-DC", "title": "Unraveling the Genomic and Molecular Basis of the Dive Response: Nitric Oxide Signaling and Vasoregulation in the Weddell Seal"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.835, "title": "Biosamples and observations from Weddell Seal colonies in McMurdo Sound during the 2015-2016 Antarctic field season", "uid": "601028", "west": 166.163}, {"awards": "1246463 Burns, Jennifer", "bounds_geometry": ["POINT(166.55 -77.75)"], "date_created": "Wed, 24 May 2017 00:00:00 GMT", "description": "This dataset includes an inventory of Weddell Seals captured by net, tagged, and observed at colonies in the Erebus Bay region of Antarctica during 4 austral field seasons between November 2013 and February 2017. Observations recorded include body mass, length, and molt category.", "east": 166.55, "geometry": ["POINT(166.55 -77.75)"], "keywords": "Antarctica; Biota; McMurdo Sound; Oceans; Ross Sea; Sample/collection Description; Sample/Collection Description; Seals", "locations": "McMurdo Sound; Ross Sea; Antarctica", "north": -77.75, "nsf_funding_programs": null, "persons": "Burns, Jennifer", "project_titles": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals", "projects": [{"proj_uid": "p0000229", "repository": "USAP-DC", "title": "The Cost of A New Fur Coat: Interactions between Molt and Reproduction in Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.75, "title": "Specimen logs and observations from Weddell Seal colonies in Erebus Bay, 2013-2017", "uid": "601027", "west": 166.55}, {"awards": "1142162 Stone, John", "bounds_geometry": ["POLYGON((-104.14 -81.07,-102.24 -81.07,-100.34 -81.07,-98.44 -81.07,-96.54 -81.07,-94.64 -81.07,-92.74 -81.07,-90.84 -81.07,-88.94 -81.07,-87.04 -81.07,-85.14 -81.07,-85.14 -81.207,-85.14 -81.344,-85.14 -81.481,-85.14 -81.618,-85.14 -81.755,-85.14 -81.892,-85.14 -82.029,-85.14 -82.166,-85.14 -82.303,-85.14 -82.44,-87.04 -82.44,-88.94 -82.44,-90.84 -82.44,-92.74 -82.44,-94.64 -82.44,-96.54 -82.44,-98.44 -82.44,-100.34 -82.44,-102.24 -82.44,-104.14 -82.44,-104.14 -82.303,-104.14 -82.166,-104.14 -82.029,-104.14 -81.892,-104.14 -81.755,-104.14 -81.618,-104.14 -81.481,-104.14 -81.344,-104.14 -81.207,-104.14 -81.07))"], "date_created": "Fri, 01 Jan 2016 00:00:00 GMT", "description": "This award supports a reconnaissance geological and radar-sounding study of promising sites in West Antarctica for a future project to measure cosmogenic nuclides in subglacial bedrock. Field work will take place in the Whitmore Mountains, close to the WAIS divide, and on the Nash and Pirrit Hills, downflow from the divide in the Weddell Sea drainage. At each site geological indicators of higher (and lower) ice levels in the past will be mapped and evidence of subglacial erosion or its absence will be documented. Elevation transects of both glacial erratics and adjacent bedrock samples will be collected to establish the timing of recent deglaciation at the sites and provide a complement to similar measurements on material from depth transects obtained by future subglacial drilling. At each site, bedrock ridges will be traced into the subsurface with closely-spaced ice-penetrating radar surveys, using a combination of instruments and frequencies to obtain the highest possible surface detail. Collectively the results will define prospective sites for subglacial sampling, and maximize the potential information to be obtained from such samples in future studies. The intellectual merit of this project is that measurements of cosmogenic nuclides in subglacial bedrock hold promise for resolving the questions of whether the West Antarctic ice sheet collapsed completely in the past, whether it is prone to repeated large deglaciations, and if so, what is their magnitude and frequency. Such studies will require careful choice of targets, to locate sites where bedrock geology is favorable, cosmogenic nuclide records are likely to have been protected from subglacial erosion, and the local ice-surface response is indicative of large-scale ice sheet behavior. The broader impacts of this work include helping to determine whether subglacial surfaces in West Antarctica were ever exposed to cosmic rays, which will provide unambiguous evidence for or against a smaller ice sheet in the past. This is an important step towards establishing whether the WAIS is vulnerable to collapse in future, and will ultimately help to address uncertainty in forecasting sea level change. The results will also provide ground truth for models of ice-sheet dynamics and long-term ice sheet evolution, and will help researchers use these models to identify paleoclimate conditions responsible for WAIS deglaciation. The education and training of students (both undergraduate and graduate students) will play an important role in the project, which will involve Antarctic fieldwork, technically challenging labwork, data collection and interpretation, and communication of the outcome to scientists and the general public.", "east": -85.14, "geometry": ["POINT(-94.64 -81.755)"], "keywords": "Antarctica; Be-10; Chemistry:rock; Chemistry:Rock; Cosmogenic Dating; Glaciology; Nunataks; Sample/collection Description; Sample/Collection Description; Solid Earth; Whitmore Mountains", "locations": "Whitmore Mountains; Antarctica", "north": -81.07, "nsf_funding_programs": null, "persons": "Stone, John", "project_titles": "Glacial-interglacial History of West Antarctic Nunataks and Site Reconnaissance for Subglacial Bedrock Sampling", "projects": [{"proj_uid": "p0000335", "repository": "USAP-DC", "title": "Glacial-interglacial History of West Antarctic Nunataks and Site Reconnaissance for Subglacial Bedrock Sampling"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -82.44, "title": "Glacial-interglacial History of West Antarctic Nunataks and Site Reconnaissance for Subglacial Bedrock Sampling", "uid": "600162", "west": -104.14}, {"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": "Weddell Sea; McMurdo Sound; Ross Sea; Antarctic Peninsula; Southern Ocean; Palmer Station; Antarctica", "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": "1321782 Costa, Daniel", "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": "Identifying the basic habitat requirements of Antarctic predators is fundamental to understanding how they will respond to the human-induced challenges of commercial fisheries and climate change. This understanding can only be achieved if the underlying linkages to physical processes are related to animal movements. As part of the international Retrospective Analysis of Antarctic Tracking Data (RAATD) organized by the SCAR Expert Group of Birds and Marine Mammals, this research will collate and synthesize tracking data from crabeater seals, Lobodon carcinophagus, and Weddell seals, Leptonychotes weddelli. These data will be combined with all available data from the Southern Ocean that has been collected by researchers from Norway, United Kingdom, Germany, Australia and the USA. These data will be analyzed using a common analytical approach and synthesized into a synoptic view of these two species across the Southern Ocean. The diving and movement patterns will be examined for each species. As well, the total home range and core habitat utilization patterns for each species and region will be determined. This study will develop global habitat maps for each species based on physical and biological attributes of their \u0027hot-spots\u0027 and then overlay all the species specific maps to identify multi-species areas of ecological significance. Broader impacts include support and training for a postdoctoral scholar, the production of a publicly available database and the participation in an international data synthesis effort.\n", "east": 180.0, "geometry": ["POINT(0 -89.999)"], "keywords": "Animal Tracking; Antarctica; Biota; Oceans; Sample/collection Description; Sample/Collection Description; Seals; Southern Ocean", "locations": "Antarctica; Southern Ocean", "north": -60.0, "nsf_funding_programs": null, "persons": "Costa, Daniel", "project_titles": "Retrospective Analysis of Antarctic Tracking data (RAATD): International Crabeater and Weddell Seal Tracking Data Sets", "projects": [{"proj_uid": "p0000346", "repository": "USAP-DC", "title": "Retrospective Analysis of Antarctic Tracking data (RAATD): International Crabeater and Weddell Seal Tracking Data Sets"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -90.0, "title": "Retrospective Analysis of Antarctic Tracking data (RAATD): International Crabeater and Weddell Seal Tracking Data Sets", "uid": "600137", "west": -180.0}, {"awards": "0838937 Costa, Daniel", "bounds_geometry": ["POLYGON((162 -75,162.7 -75,163.4 -75,164.1 -75,164.8 -75,165.5 -75,166.2 -75,166.9 -75,167.6 -75,168.3 -75,169 -75,169 -75.3,169 -75.6,169 -75.9,169 -76.2,169 -76.5,169 -76.8,169 -77.1,169 -77.4,169 -77.7,169 -78,168.3 -78,167.6 -78,166.9 -78,166.2 -78,165.5 -78,164.8 -78,164.1 -78,163.4 -78,162.7 -78,162 -78,162 -77.7,162 -77.4,162 -77.1,162 -76.8,162 -76.5,162 -76.2,162 -75.9,162 -75.6,162 -75.3,162 -75))"], "date_created": "Wed, 01 Jan 2014 00:00:00 GMT", "description": "Marine mammals of the Southern Ocean have evolved diverse life history patterns and foraging strategies to accommodate extreme fluctuations in the physical and biological environment. In light of ongoing climate change and the dramatic shifts in the extent and persistence of sea ice in the Ross Sea, it is critical to understand how Weddell seals, Leptonychotes weddellii, a key apex predator, select and utilize foraging habitats. Recent advances in satellite-linked animal-borne conductivity, temperature and depth (CTD) tags make it possible to simultaneously collect data on seal locations, their diving patterns, and the temperature and salinity profiles of the water columns they utilize. In other ecosystems, such data have revealed that marine predators selectively forage in areas where currents and fronts serve to locally concentrate prey resources, and that these conditions are required to sustain populations. Weddell seals will be studied in McMurdo Sound and at Terra Nova Bay, Ross Sea and will provide the first new data on Weddell seal winter diving behavior and habitat use in almost two decades. The relationship between an animal\u0027s diving behavior and physical habitat has enormous potential to enhance monitoring studies and to provide insight into how changes in ice conditions (due either to warming or the impact of large icebergs, such as B15) might impact individual time budgets and foraging success. The second thrust of this project is to use the profiles obtained from CTD seal tags to model the physical oceanography of this region. Current mathematical models of physical oceanographic processes in the Southern Ocean are directed at better understanding the role that it plays in global climate processes, and the linkages between physical and biological oceanographic processes. However, these efforts are limited by the scarcity of oceanographic data at high latitudes in the winter months; CTD tags deployed on animals will collect data at sufficient spatial and temporal resolution to improve data density. The project will contribute to two IPY endorsed initiatives: MEOP (Marine Mammals as Explorers of the Ocean Pole to Pole) and CAML (Census of Antarctic Marine Life). In addition, the highly visual nature of the data and analysis lends itself to public and educational display and outreach, particularly as they relate to global climate change, and we have collaborations with undergraduate and graduate training programs, the Seymour Marine Discovery Center, and the ARMADA program to foster these broader impacts.\n", "east": 169.0, "geometry": ["POINT(165.5 -76.5)"], "keywords": "Antarctica; Biota; Oceans; Ross Sea; Southern Ocean", "locations": "Ross Sea; Antarctica; Southern Ocean", "north": -75.0, "nsf_funding_programs": null, "persons": "Costa, Daniel", "project_titles": "Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea", "projects": [{"proj_uid": "p0000661", "repository": "USAP-DC", "title": "Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea", "uid": "600025", "west": 162.0}, {"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": "Antarctica; Weddell Sea; Antarctic Peninsula; Larsen B Ice Shelf; Southern Ocean", "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": "0838892 Burns, Jennifer", "bounds_geometry": ["POLYGON((162 -75,162.7 -75,163.4 -75,164.1 -75,164.8 -75,165.5 -75,166.2 -75,166.9 -75,167.6 -75,168.3 -75,169 -75,169 -75.3,169 -75.6,169 -75.9,169 -76.2,169 -76.5,169 -76.8,169 -77.1,169 -77.4,169 -77.7,169 -78,168.3 -78,167.6 -78,166.9 -78,166.2 -78,165.5 -78,164.8 -78,164.1 -78,163.4 -78,162.7 -78,162 -78,162 -77.7,162 -77.4,162 -77.1,162 -76.8,162 -76.5,162 -76.2,162 -75.9,162 -75.6,162 -75.3,162 -75))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Marine mammals of the Southern Ocean have evolved diverse life history patterns and foraging strategies to accommodate extreme fluctuations in the physical and biological environment. In light of ongoing climate change and the dramatic shifts in the extent and persistence of sea ice in the Ross Sea, it is critical to understand how Weddell seals, Leptonychotes weddellii, a key apex predator, select and utilize foraging habitats. Recent advances in satellite-linked animal-borne conductivity, temperature and depth (CTD) tags make it possible to simultaneously collect data on seal locations, their diving patterns, and the temperature and salinity profiles of the water columns they utilize. In other ecosystems, such data have revealed that marine predators selectively forage in areas where currents and fronts serve to locally concentrate prey resources, and that these conditions are required to sustain populations. Weddell seals will be studied in McMurdo Sound and at Terra Nova Bay, Ross Sea and will provide the first new data on Weddell seal winter diving behavior and habitat use in almost two decades. The relationship between an animal\u0027s diving behavior and physical habitat has enormous potential to enhance monitoring studies and to provide insight into how changes in ice conditions (due either to warming or the impact of large icebergs, such as B15) might impact individual time budgets and foraging success. The second thrust of this project is to use the profiles obtained from CTD seal tags to model the physical oceanography of this region. Current mathematical models of physical oceanographic processes in the Southern Ocean are directed at better understanding the role that it plays in global climate processes, and the linkages between physical and biological oceanographic processes. However, these efforts are limited by the scarcity of oceanographic data at high latitudes in the winter months; CTD tags deployed on animals will collect data at sufficient spatial and temporal resolution to improve data density. The project will contribute to two IPY endorsed initiatives: MEOP (Marine Mammals as Explorers of the Ocean Pole to Pole) and CAML (Census of Antarctic Marine Life). In addition, the highly visual nature of the data and analysis lends itself to public and educational display and outreach, particularly as they relate to global climate change, and we have collaborations with undergraduate and graduate training programs, the Seymour Marine Discovery Center, and the ARMADA program to foster these broader impacts.", "east": 169.0, "geometry": ["POINT(165.5 -76.5)"], "keywords": "Biota; Oceans; Ross Sea; Seals; Southern Ocean", "locations": "Ross Sea; Southern Ocean", "north": -75.0, "nsf_funding_programs": null, "persons": "Burns, Jennifer", "project_titles": "Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea", "projects": [{"proj_uid": "p0000661", "repository": "USAP-DC", "title": "Collaborative Research: Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "Weddell seals as autonomous sensors of the winter oceanography of the Ross Sea", "uid": "600101", "west": 162.0}, {"awards": "1043779 Mellish, Jo-Ann", "bounds_geometry": ["POLYGON((165.83333 -77.51528,165.923331 -77.51528,166.013332 -77.51528,166.103333 -77.51528,166.193334 -77.51528,166.283335 -77.51528,166.373336 -77.51528,166.463337 -77.51528,166.553338 -77.51528,166.643339 -77.51528,166.73334 -77.51528,166.73334 -77.55153,166.73334 -77.58778,166.73334 -77.62403,166.73334 -77.66028,166.73334 -77.69653,166.73334 -77.73278,166.73334 -77.76903,166.73334 -77.80528,166.73334 -77.84153,166.73334 -77.87778,166.643339 -77.87778,166.553338 -77.87778,166.463337 -77.87778,166.373336 -77.87778,166.283335 -77.87778,166.193334 -77.87778,166.103333 -77.87778,166.013332 -77.87778,165.923331 -77.87778,165.83333 -77.87778,165.83333 -77.84153,165.83333 -77.80528,165.83333 -77.76903,165.83333 -77.73278,165.83333 -77.69653,165.83333 -77.66028,165.83333 -77.62403,165.83333 -77.58778,165.83333 -77.55153,165.83333 -77.51528))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Despite being an essential physiological component of homeotherm life in polar regions, little is known about the energetic requirements for thermoregulation in either air or water for high- latitude seals. In a joint field and modeling study, the principal investigators will quantify these costs for the Weddell seal under both ambient air and water conditions. The field research will include innovative heat flux, digestive and locomotor cost telemetry on 40 free-ranging seals combined with assessments of animal health (morphometrics, hematology and clinical chemistry panels), quantity (ultrasound) and quality (tissue biopsy) of blubber insulation, and determination of surface skin temperature patterns (infrared thermography). Field-collected data will be combined with an established individual based computational energetics model to define cost-added thresholds in body condition for different body masses. This study will fill a major knowledge gap by providing data essential to modeling all aspects of pinniped life history, in particular for ice seals. Such parameterization of energetic cost components will be essential for the accurate modeling of responses by pinnipeds to environmental variance, including direct and indirect effects driven by climate change. The study also will provide extensive opportunities in polar field work, animal telemetry, biochemical analyses and computational modeling for up to three undergraduate students and one post-doctoral researcher. Integrated education and outreach efforts will educate the public (K-12 through adult) on the importance of quantifying energetic costs of thermoregulation for marine mammals and the need to understand responses of species to environmental variance. This effort will include a custom-built, interactive hands-on mobile exhibit, and development of content for an Ocean Today kiosk.\n", "east": 166.73334, "geometry": ["POINT(166.283335 -77.69653)"], "keywords": "Antarctica; Biota; Oceans; Ross Sea; Sea Ice; Seals; Sea Surface; Southern Ocean", "locations": "Antarctica; Ross Sea; Sea Surface; Southern Ocean", "north": -77.51528, "nsf_funding_programs": null, "persons": "Mellish, Jo-Ann", "project_titles": "Collaborative Research: THERMOREGULATION IN FREE-LIVING ANTARCTIC SEALS: THE MISSING LINK IN EFFECTIVE ECOLOGICAL MODELING", "projects": [{"proj_uid": "p0000343", "repository": "USAP-DC", "title": "Collaborative Research: THERMOREGULATION IN FREE-LIVING ANTARCTIC SEALS: THE MISSING LINK IN EFFECTIVE ECOLOGICAL MODELING"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.87778, "title": "Thermoregulation in Free-Living Antarctic Seals: The Missing Link in Effective Ecological Modeling", "uid": "600130", "west": 165.83333}, {"awards": "0636319 Shaw, Timothy", "bounds_geometry": ["POLYGON((-51.9201 -57.5061,-50.99447 -57.5061,-50.06884 -57.5061,-49.14321 -57.5061,-48.21758 -57.5061,-47.29195 -57.5061,-46.36632 -57.5061,-45.44069 -57.5061,-44.51506 -57.5061,-43.58943 -57.5061,-42.6638 -57.5061,-42.6638 -58.03449,-42.6638 -58.56288,-42.6638 -59.09127,-42.6638 -59.61966,-42.6638 -60.14805,-42.6638 -60.67644,-42.6638 -61.20483,-42.6638 -61.73322,-42.6638 -62.26161,-42.6638 -62.79,-43.58943 -62.79,-44.51506 -62.79,-45.44069 -62.79,-46.36632 -62.79,-47.29195 -62.79,-48.21758 -62.79,-49.14321 -62.79,-50.06884 -62.79,-50.99447 -62.79,-51.9201 -62.79,-51.9201 -62.26161,-51.9201 -61.73322,-51.9201 -61.20483,-51.9201 -60.67644,-51.9201 -60.14805,-51.9201 -59.61966,-51.9201 -59.09127,-51.9201 -58.56288,-51.9201 -58.03449,-51.9201 -57.5061))"], "date_created": "Sat, 01 Jan 2011 00:00:00 GMT", "description": "Atmospheric warming has been associated with retreating glaciers, disintegrating ice shelves, and the increasing prevalence of icebergs in the Southern Ocean over the last decade. Our preliminary study of two icebergs in the NW Weddell Sea, an area of high iceberg concentration, showed significant delivery of terrestrial material accompanied by significant enhancement of phytoplankton and zooplankton/micronekton abundance, and primary production surrounding the icebergs. We hypothesize that nutrient enrichment by free-drifting icebergs will increase primary production and sedimentation of organic carbon, thus increasing the draw-down and sequestration of CO2 in the Southern Ocean and impacting the global carbon cycle. Our research addresses the following questions:1) What is the relationship between the physical dynamics of free-drifting icebergs and the Fe and nutrient distributions of the surrounding water column? 2) What is the relationship between Fe and nutrient distributions associated with free-drifting icebergs and the organic carbon dynamics of the ice-attached and surrounding pelagic communities (microbes, zooplankton, micronekton)? 3) What is impact on the export flux of particulate organic carbon from the mixed layer? An interdisciplinary approach is proposed to examine iceberg structure and dynamics, biogeochemical processes, and carbon cycling that includes measurement of trace element, nutrient and radionuclide distributions; organic carbon dynamics mediated by microbial, ice-attached and zooplankton communities; and particulate organic carbon export fluxes. Results from this project will further our understanding of the relationship between climate change and carbon sequestration in the Southern Ocean. Our findings will be incorporated into the Antarctic Research division of the Ocean Exploration Center (OEC) as part of the SIOExplorer: Digital Library Project. The OEC allows users to access content, which is classified to one of four levels: entry (grade K-6), student (grade 6-12), college, and research. Graduate students, undergraduates, teachers, and volunteers are important participants in the proposed field and laboratory work. For the K-12 level, a professional writer of children\u0027s books will participate in cruises to produce an account of the expedition and a daily interactive website.", "east": -42.6638, "geometry": ["POINT(-47.29195 -60.14805)"], "keywords": "Biota; Chemistry:fluid; Chemistry:Fluid; Geochemistry; Oceans; Sea Ice; Sea Surface; Southern Ocean; Weddell Sea", "locations": "Sea Surface; Weddell Sea; Southern Ocean", "north": -57.5061, "nsf_funding_programs": null, "persons": "Shaw, Tim; Twining, Benjamin", "project_titles": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "projects": [{"proj_uid": "p0000511", "repository": "USAP-DC", "title": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -62.79, "title": "Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "uid": "600064", "west": -51.9201}, {"awards": "0636543 Murray, Alison", "bounds_geometry": ["POLYGON((-51.98403 -57.58068,-51.042765 -57.58068,-50.1015 -57.58068,-49.160235 -57.58068,-48.21897 -57.58068,-47.277705 -57.58068,-46.33644 -57.58068,-45.395175 -57.58068,-44.45391 -57.58068,-43.512645 -57.58068,-42.57138 -57.58068,-42.57138 -58.10845,-42.57138 -58.63622,-42.57138 -59.16399,-42.57138 -59.69176,-42.57138 -60.21953,-42.57138 -60.7473,-42.57138 -61.27507,-42.57138 -61.80284,-42.57138 -62.33061,-42.57138 -62.85838,-43.512645 -62.85838,-44.45391 -62.85838,-45.395175 -62.85838,-46.33644 -62.85838,-47.277705 -62.85838,-48.21897 -62.85838,-49.160235 -62.85838,-50.1015 -62.85838,-51.042765 -62.85838,-51.98403 -62.85838,-51.98403 -62.33061,-51.98403 -61.80284,-51.98403 -61.27507,-51.98403 -60.7473,-51.98403 -60.21953,-51.98403 -59.69176,-51.98403 -59.16399,-51.98403 -58.63622,-51.98403 -58.10845,-51.98403 -57.58068))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Atmospheric warming has been associated with retreating glaciers, disintegrating ice shelves, and the increasing prevalence of icebergs in the Southern Ocean over the last decade. Our preliminary study of two icebergs in the NW Weddell Sea, an area of high iceberg concentration, showed significant delivery of terrestrial material accompanied by significant enhancement of phytoplankton and zooplankton/micronekton abundance, and primary production surrounding the icebergs. We hypothesize that nutrient enrichment by free-drifting icebergs will increase primary production and sedimentation of organic carbon, thus increasing the draw-down and sequestration of CO2 in the Southern Ocean and impacting the global carbon cycle. Our research addresses the following questions: 1) What is the relationship between the physical dynamics of free-drifting icebergs and the Fe and nutrient distributions of the surrounding water column? 2) What is the relationship between Fe and nutrient distributions associated with free-drifting icebergs and the organic carbon dynamics of the ice-attached and surrounding pelagic communities (microbes, zooplankton, micronekton)? 3) What is impact on the export flux of particulate organic carbon from the mixed layer? An interdisciplinary approach is proposed to examine iceberg structure and dynamics, biogeochemical processes, and carbon cycling that includes measurement of trace element, nutrient and radionuclide distributions; organic carbon dynamics mediated by microbial, ice-attached and zooplankton communities; and particulate organic carbon export fluxes. Results from this project will further our understanding of the relationship between climate change and carbon sequestration in the Southern Ocean. Our findings will be incorporated into the Antarctic Research division of the Ocean Exploration Center (OEC) as part of the SIOExplorer: Digital Library Project. The OEC allows users to access content, which is classified to one of four levels: entry (grade K-6), student (grade 6-12), college, and research. Graduate students, undergraduates, teachers, and volunteers are important participants in the proposed field and laboratory work. For the K-12 level, a professional writer of children\u0027s books will participate in cruises to produce an account of the expedition and a daily interactive website.", "east": -42.57138, "geometry": ["POINT(-47.277705 -60.21953)"], "keywords": "Biota; Geochemistry; NBP0902; Oceans; Physical Oceanography; Sea Ice; Southern Ocean; Weddell Sea", "locations": "Southern Ocean; Weddell Sea", "north": -57.58068, "nsf_funding_programs": null, "persons": "Murray, Alison", "project_titles": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "projects": [{"proj_uid": "p0000511", "repository": "USAP-DC", "title": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -62.85838, "title": "Free-Drifting Icebergs as Proliferating Dispersion Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "uid": "600065", "west": -51.98403}, {"awards": "0538580 Hemming, Sidney", "bounds_geometry": ["POLYGON((60 -60,72 -60,84 -60,96 -60,108 -60,120 -60,132 -60,144 -60,156 -60,168 -60,180 -60,180 -61,180 -62,180 -63,180 -64,180 -65,180 -66,180 -67,180 -68,180 -69,180 -70,168 -70,156 -70,144 -70,132 -70,120 -70,108 -70,96 -70,84 -70,72 -70,60 -70,60 -69,60 -68,60 -67,60 -66,60 -65,60 -64,60 -63,60 -62,60 -61,60 -60))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "This project studies sediment from the ocean floor to understand Antarctica\u0027s geologic history. Glacially eroded from the Antarctic continent, these sediments may offer insight into the 99% Antarctica covered by ice. The work\u0027s central focus is determining crust formation ages and thermal histories for three key areas of East Antarctica--Prydz Bay, eastern Weddell Sea, and Wilkes Land--through a combination of petrography, bulk sediment geochemistry and radiogenic isotopes, as well as isotope chronology of individual mineral grains. One specific objective is characterizing the composition of the Gamburtsev Mountains through studies of Eocene fluvial sediments from Prydz Bay. In addition to furthering our understanding of the hidden terrains of Antarctica, these terrigenous sediments will also serve as a natural laboratory to evaluate the effects of continental weathering on the Hf/Nd isotope systematics of seawater. An important broader impact of the project is providing exciting research projects for graduate and postdoctoral students using state of the art techniques in geochemistry.", "east": 180.0, "geometry": ["POINT(120 -65)"], "keywords": "Antarctica; Chemistry:sediment; Chemistry:Sediment; Geochemistry; Geochronology; Isotope Data; Marine Sediments; Oceans; Prydz Bay; Solid Earth; Southern Ocean; Weddell Sea; Wilkes Land", "locations": "Prydz Bay; Weddell Sea; Wilkes Land; Southern Ocean; Antarctica", "north": -60.0, "nsf_funding_programs": null, "persons": "van de Flierdt, Tina; Goldstein, Steven L.; Hemming, Sidney R.", "project_titles": "Antarctica\u0027s Geological History Reflected in Sedimentary Radiogenic Isotopes", "projects": [{"proj_uid": "p0000524", "repository": "USAP-DC", "title": "Antarctica\u0027s Geological History Reflected in Sedimentary Radiogenic Isotopes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -70.0, "title": "Antarctica\u0027s Geological History Reflected in Sedimentary Radiogenic Isotopes", "uid": "600056", "west": 60.0}, {"awards": "9024544 Andreas, Edgar", "bounds_geometry": ["POLYGON((-53.8 -61.2,-52.74 -61.2,-51.68 -61.2,-50.62 -61.2,-49.56 -61.2,-48.5 -61.2,-47.44 -61.2,-46.38 -61.2,-45.32 -61.2,-44.26 -61.2,-43.2 -61.2,-43.2 -62.22,-43.2 -63.24,-43.2 -64.26,-43.2 -65.28,-43.2 -66.3,-43.2 -67.32,-43.2 -68.34,-43.2 -69.36,-43.2 -70.38,-43.2 -71.4,-44.26 -71.4,-45.32 -71.4,-46.38 -71.4,-47.44 -71.4,-48.5 -71.4,-49.56 -71.4,-50.62 -71.4,-51.68 -71.4,-52.74 -71.4,-53.8 -71.4,-53.8 -70.38,-53.8 -69.36,-53.8 -68.34,-53.8 -67.32,-53.8 -66.3,-53.8 -65.28,-53.8 -64.26,-53.8 -63.24,-53.8 -62.22,-53.8 -61.2))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Location: Ice camp on perennial sea ice in the southwestern corner of the Weddell Sea, Antarctic\n\nThe first direct radiative and turbulent surface flux measurements ever made over floating Antarctic sea ice. The data are from Ice Station Weddell as it drifted in the western Weddell Sea from February to late May 1992.\n\nData Types:\n\nHourly measurements of the turbulent surface fluxes of momentum and sensible and latent heat by eddy covariance at a height of 4.65 m above snow-covered sea ice. Instruments were a 3-axis sonic anemometer/thermometer and a Lyman-alpha hygrometer.\n\nHourly, surface-level measurements of the four radiation components: in-coming and out-going longwave and shortwave radiation. Instruments were hemispherical pyranometers and pyrgeometers.\n\nHourly mean values of standard meteorological variables: air temperature, dew point temperature, wind speed and direction, barometric pressure, surface temperature. Instruments were a propeller-vane for wind speed and direction and cooled-mirror dew-point hygrometers and platinum resistance thermometers for dew-points and temperatures. Surface temperature came from a Barnes PRT-5 infrared thermometer.\n\nFlux Data\nThe entire data kit is bundled as a zip file named ISW_Flux_Data.zip\nThe main data file is comma delimited.\nThe README file is ASCII.\nThe associated reprints of publications are in pdf.\n\nRadiosounding data: On Ice Station Weddell, typically twice a day from 21 February through 4 June 1992 made with both tethered (i.e., only boundary-layer profiles) and (more rarely) free-flying sondes that did not measure wind speed. (168 soundings).\n\nISW Radiosoundings\nThe entire data kit is bundled as a zip file named ISW_Radiosounding.zip.\nThe README file is in ASCII.\nTwo summary files that include the list of sounding and the declinations are in ASCII.\nThe 168 individual sounding files are in ASCII.\nTwo supporting publications that describe the data and some analyses are in pdf.\n\nRadiosounding data collected from the Russian ship Akademic Fedorov from 26 May through 5 June 1992 at 6-hourly intervals as it approached Ice Station Weddell from the north. These soundings include wind vector, temperature, humidity, and pressure. (40 soundings)\n\nAkademic Federov Radiosoundings\nThe entire data kit is bundled as a zip file named Akad_Federov_Radiosounding.zip.\nThe README file is in ASCII.\nA summary file that lists the soundings is in ASCII.\nThe 40 individual sounding files are in ASCII.\nTwo supporting publications that describe the data and some analyses are in pdf.\n\n\nDocumentation:\n\nAndreas, E. L, and K. J. Claffey, 1995: Air-ice drag coefficients in the western Weddell Sea: 1. Values deduced from profile measurements. Journal of Geophysical Research, 100, 4821\u20134831.\n\nAndreas, E. L, K. J. Claffey, and A. P. Makshtas, 2000: Low-level atmospheric jets and inversions over the western Weddell Sea. Boundary-Layer Meteorology, 97, 459\u2013486.\n\nAndreas, E. L, R. E. Jordan, and A. P. Makshtas, 2004: Simulations of snow, ice, and near-surface atmospheric processes on Ice Station Weddell. Journal of Hydrometeorology, 5, 611\u2013624.\n\nAndreas, E. L, R. E. Jordan, and A. P. Makshtas, 2005: Parameterizing turbulent exchange over sea ice: The Ice Station Weddell results. Boundary-Layer Meteorology, 114, 439\u2013460.\n\nAndreas, E. L, P. O. G. Persson, R. E. Jordan, T. W. Horst, P. S. Guest, A. A. Grachev, and C. W. Fairall, 2010: Parameterizing turbulent exchange over sea ice in winter. Journal of Hydrometeorology, 11, 87\u2013104.\n\nClaffey, K. J., E. L Andreas, and A. P. Makshtas, 1994: Upper-air data collected on Ice Station Weddell. Special Report 94-25, U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, NH, 62 pp.\n\nISW Group, 1993: Weddell Sea exploration from ice station. Eos, Transactions, American Geophysical Union, 74, 121\u2013126.\n\nMakshtas, A. P., E. L Andreas, P. N. Svyaschennikov, and V. F. Timachev, 1999: Accounting for clouds in sea ice models. Atmospheric Research, 52, 77\u2013113.", "east": -43.2, "geometry": ["POINT(-48.5 -66.3)"], "keywords": "Antarctica; Atmosphere; Critical Zone; Meteorology; Oceans; Radiosounding; Southern Ocean; Weddell Sea", "locations": "Antarctica; Southern Ocean; Weddell Sea", "north": -61.2, "nsf_funding_programs": null, "persons": "Andreas, Edgar", "project_titles": "Atmospheric Boundary Layer Measurements on the Weddell Sea Drifting Station", "projects": [{"proj_uid": "p0000655", "repository": "USAP-DC", "title": "Atmospheric Boundary Layer Measurements on the Weddell Sea Drifting Station"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.4, "title": "Atmospheric Boundary Layer Measurements on the Weddell Sea Drifting Station", "uid": "600141", "west": -53.8}, {"awards": "0649609 Horning, Markus", "bounds_geometry": ["POLYGON((165.975 -77.54,166.0631 -77.54,166.1512 -77.54,166.2393 -77.54,166.3274 -77.54,166.4155 -77.54,166.5036 -77.54,166.5917 -77.54,166.6798 -77.54,166.7679 -77.54,166.856 -77.54,166.856 -77.5709,166.856 -77.6018,166.856 -77.6327,166.856 -77.6636,166.856 -77.6945,166.856 -77.7254,166.856 -77.7563,166.856 -77.7872,166.856 -77.8181,166.856 -77.849,166.7679 -77.849,166.6798 -77.849,166.5917 -77.849,166.5036 -77.849,166.4155 -77.849,166.3274 -77.849,166.2393 -77.849,166.1512 -77.849,166.0631 -77.849,165.975 -77.849,165.975 -77.8181,165.975 -77.7872,165.975 -77.7563,165.975 -77.7254,165.975 -77.6945,165.975 -77.6636,165.975 -77.6327,165.975 -77.6018,165.975 -77.5709,165.975 -77.54))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "The primary objectives of this research are to investigate the proximate effects of aging on diving capability in the Weddell Seal and to describe mechanisms by which aging may influence foraging ecology, through physiology and behavior. This model pinniped species has been the focus of three decades of research in McMurdo Sound, Antarctica. Compared to the knowledge of pinniped diving physiology and ecology during early development and young adulthood, little is known about individuals nearing the upper limit of their normal reproductive age range. Evolutionary aging theories predict that elderly diving seals should exhibit senescence. This should be exacerbated by surges in the generation of oxygen free radicals via hypoxia-reoxygenation during breath-hold diving and hunting, which are implicated in age-related damage to cellular mitochondria. Surprisingly, limited observations of non-threatened pinniped populations indicate that senescence does not occur to a level where reproductive output is affected. The ability of pinnipeds to avoid apparent senescence raises two major questions: what specific physiological and morphological changes occur with advancing age in pinnipeds; and what subtle adjustments are made by these animals to cope with such changes? This investigation will focus on specific, functional physiological and behavioral changes relating to dive capability with advancing age. Data will be compared between Weddell seals in the peak, and near the end, of their reproductive age range. The investigators will quantify age-related changes in general health and body condition, combined with fine scale assessments of external and internal ability to do work in the form of diving. Specifically, patterns of muscle morphology, oxidant status and oxygen storage with age will be examined. The effects of age on skeletal muscular function and exercise performance will also be examined. The investigators hypothesize that senescence does occur in Weddell seals at the level of small-scale, proximate physiological effects and performance, but that behavioral plasticity allows for a given degree of compensation. Broader impacts include the training of students and outreach activities including interviews and articles written for the popular media. This study should also establish diving seals as a novel model for the study of cardiovascular and muscular physiology of aging and develop a foundation for similar research on other species. Advancement of the understanding of aging by medical science has been impressive in recent years but basic mammalian aging is an area of study the still requires considerable effort. The development of new models for the study of aging has tremendous potential benefits to society at large.", "east": 166.856, "geometry": ["POINT(166.4155 -77.6945)"], "keywords": "Antarctica; Biota; McMurdo; Oceans; Seals; Southern Ocean", "locations": "Antarctica; Southern Ocean; McMurdo", "north": -77.54, "nsf_funding_programs": null, "persons": "Horning, Markus", "project_titles": "Collaborative Research: Aging in Weddell Seals: Proximate Mechanisms of Age-Related Changes in Adaptations to Breath-Hold Hunting in an Extreme Environment", "projects": [{"proj_uid": "p0000487", "repository": "USAP-DC", "title": "Collaborative Research: Aging in Weddell Seals: Proximate Mechanisms of Age-Related Changes in Adaptations to Breath-Hold Hunting in an Extreme Environment"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -77.849, "title": "Aging in Weddell Seals: Proximate Mechanisms of Age-Related Changes in Adaptations to Breath-Hold Hunting in an Extreme Environment", "uid": "600071", "west": 165.975}, {"awards": "0636730 Vernet, Maria", "bounds_geometry": ["POLYGON((-55 -52,-53.5 -52,-52 -52,-50.5 -52,-49 -52,-47.5 -52,-46 -52,-44.5 -52,-43 -52,-41.5 -52,-40 -52,-40 -53.3,-40 -54.6,-40 -55.9,-40 -57.2,-40 -58.5,-40 -59.8,-40 -61.1,-40 -62.4,-40 -63.7,-40 -65,-41.5 -65,-43 -65,-44.5 -65,-46 -65,-47.5 -65,-49 -65,-50.5 -65,-52 -65,-53.5 -65,-55 -65,-55 -63.7,-55 -62.4,-55 -61.1,-55 -59.8,-55 -58.5,-55 -57.2,-55 -55.9,-55 -54.6,-55 -53.3,-55 -52))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Atmospheric warming has been associated with retreating glaciers, disintegrating ice shelves, and the increasing prevalence of icebergs in the Southern Ocean over the last decade. Our preliminary study of two icebergs in the NW Weddell Sea, an area of high iceberg concentration, showed significant delivery of terrestrial material accompanied by significant enhancement of phytoplankton and zooplankton/micronekton abundance, and primary production surrounding the icebergs. We hypothesize that nutrient enrichment by free-drifting icebergs will increase primary production and sedimentation of organic carbon, thus increasing the draw-down and sequestration of CO2 in the Southern Ocean and impacting the global carbon cycle. Our research addresses the following questions: 1) What is the relationship between the physical dynamics of free-drifting icebergs and the Fe and nutrient distributions of the surrounding water column? 2) What is the relationship between Fe and nutrient distributions associated with free-drifting icebergs and the organic carbon dynamics of the ice-attached and surrounding pelagic communities (microbes, zooplankton, micronekton)? 3) What is impact on the export flux of particulate organic carbon from the mixed layer? An interdisciplinary approach is proposed to examine iceberg structure and dynamics, biogeochemical processes, and carbon cycling that includes measurement of trace element, nutrient and radionuclide distributions; organic carbon dynamics mediated by microbial, ice-attached and zooplankton communities; and particulate organic carbon export fluxes. Results from this project will further our understanding of the relationship between climate change and carbon sequestration in the Southern Ocean. Our findings will be incorporated into the Antarctic Research division of the Ocean Exploration Center (OEC) as part of the SIOExplorer: Digital Library Project. The OEC allows users to access content, which is classified to one of four levels: entry (grade K-6), student (grade 6-12), college, and research. Graduate students, undergraduates, teachers, and volunteers are important participants in the proposed field and laboratory work. For the K-12 level, a professional writer of children\u0027s books will participate in cruises to produce an account of the expedition and a daily interactive website.\n", "east": -40.0, "geometry": ["POINT(-47.5 -58.5)"], "keywords": "Antarctica; Biota; Chemistry:fluid; Chemistry:Fluid; Geochemistry; NBP0902; Oceans; Physical Oceanography; Sea Surface; Southern Ocean; Weddell Sea", "locations": "Southern Ocean; Sea Surface; Antarctica; Weddell Sea", "north": -52.0, "nsf_funding_programs": null, "persons": "Vernet, Maria", "project_titles": "Collaborative Reseach: Free-drifting Icebergs as Proliferating Dispersion Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean.", "projects": [{"proj_uid": "p0000532", "repository": "USAP-DC", "title": "Collaborative Reseach: Free-drifting Icebergs as Proliferating Dispersion Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean."}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Free-drifting Icebergs as Proliferating Dispersion Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "uid": "600068", "west": -55.0}, {"awards": "0636723 Helly, John", "bounds_geometry": ["POLYGON((-55 -52,-53.5 -52,-52 -52,-50.5 -52,-49 -52,-47.5 -52,-46 -52,-44.5 -52,-43 -52,-41.5 -52,-40 -52,-40 -53.3,-40 -54.6,-40 -55.9,-40 -57.2,-40 -58.5,-40 -59.8,-40 -61.1,-40 -62.4,-40 -63.7,-40 -65,-41.5 -65,-43 -65,-44.5 -65,-46 -65,-47.5 -65,-49 -65,-50.5 -65,-52 -65,-53.5 -65,-55 -65,-55 -63.7,-55 -62.4,-55 -61.1,-55 -59.8,-55 -58.5,-55 -57.2,-55 -55.9,-55 -54.6,-55 -53.3,-55 -52))"], "date_created": "Fri, 01 Jan 2010 00:00:00 GMT", "description": "Atmospheric warming has been associated with retreating glaciers, disintegrating ice shelves, and the increasing prevalence of icebergs in the Southern Ocean over the last decade. Our preliminary study of two icebergs in the NW Weddell Sea, an area of high iceberg concentration, showed significant delivery of terrestrial material accompanied by significant enhancement of phytoplankton and zooplankton/micronekton abundance, and primary production surrounding the icebergs. We hypothesize that nutrient enrichment by free-drifting icebergs will increase primary production and sedimentation of organic carbon, thus increasing the draw-down and sequestration of CO2 in the Southern Ocean and impacting the global carbon cycle. Our research addresses the following questions: 1) What is the relationship between the physical dynamics of free-drifting icebergs and the Fe and nutrient distributions of the surrounding water column? 2) What is the relationship between Fe and nutrient distributions associated with free-drifting icebergs and the organic carbon dynamics of the ice-attached and surrounding pelagic communities (microbes, zooplankton, micronekton)? 3) What is impact on the export flux of particulate organic carbon from the mixed layer? An interdisciplinary approach is proposed to examine iceberg structure and dynamics, biogeochemical processes, and carbon cycling that includes measurement of trace element, nutrient and radionuclide distributions; organic carbon dynamics mediated by microbial, ice-attached and zooplankton communities; and particulate organic carbon export fluxes. Results from this project will further our understanding of the relationship between climate change and carbon sequestration in the Southern Ocean. Our findings will be incorporated into the Antarctic Research division of the Ocean Exploration Center (OEC) as part of the SIOExplorer: Digital Library Project. The OEC allows users to access content, which is classified to one of four levels: entry (grade K-6), student (grade 6-12), college, and research. Graduate students, undergraduates, teachers, and volunteers are important participants in the proposed field and laboratory work. For the K-12 level, a professional writer of children\u0027s books will participate in cruises to produce an account of the expedition and a daily interactive website.", "east": -40.0, "geometry": ["POINT(-47.5 -58.5)"], "keywords": "Antarctica; NBP0902; Oceans; Physical Oceanography; Southern Ocean; Weddell Sea", "locations": "Weddell Sea; Southern Ocean; Antarctica", "north": -52.0, "nsf_funding_programs": null, "persons": "Helly, John", "project_titles": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "projects": [{"proj_uid": "p0000511", "repository": "USAP-DC", "title": "Collaborative Research: Free Drifting Icebergs as Proliferation Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Free-Drifting Icebergs as Proliferating Dispersion Sites of Iron Enrichment, Organic Carbon Production and Export in the Southern Ocean", "uid": "600067", "west": -55.0}, {"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": "0634682 Kanatous, Shane", "bounds_geometry": ["POLYGON((160 -77,160.7 -77,161.4 -77,162.1 -77,162.8 -77,163.5 -77,164.2 -77,164.9 -77,165.6 -77,166.3 -77,167 -77,167 -77.1,167 -77.2,167 -77.3,167 -77.4,167 -77.5,167 -77.6,167 -77.7,167 -77.8,167 -77.9,167 -78,166.3 -78,165.6 -78,164.9 -78,164.2 -78,163.5 -78,162.8 -78,162.1 -78,161.4 -78,160.7 -78,160 -78,160 -77.9,160 -77.8,160 -77.7,160 -77.6,160 -77.5,160 -77.4,160 -77.3,160 -77.2,160 -77.1,160 -77))"], "date_created": "Thu, 01 Jan 2009 00:00:00 GMT", "description": "During the past three decades, intensive field studies have revealed much about the behavior, physiology, life history, and population dynamics of the Weddell seal (Leptonychotes weddelli) population of McMurdo Sound, Antarctica. These animals are marine predators that are highly adapted for an aquatic life in shore-fast and pack ice habitats. They must locate and capture sparsely distributed under the ice. Most of what is known about their diving behavior is based on studies of adult animals with little known about the development or the genetic controls of diving behavior of young animals. The goal of this project is to examine the temporal development of aerobic capacity, lipid metabolism and oxygen stores in the skeletal muscles of young Weddell seals and to determine which aspects of the cellular environment are important in the regulation of these adaptations during maturation. This project builds on past results to investigate the molecular controls that underlie the development of these adaptations. The first objective is to further characterize the ontogenetic changes in muscle aerobic capacity, lipid metabolism and myoglobin concentration and distribution using enzymatic, immuno-histochemical and myoglobin assays in newly weaned, subadult, and adult seals. The second objective is to determine the molecular controls that regulate these changes in aerobic capacity, fiber type distribution and myoglobin in skeletal muscles during maturation. Through subtractive hybridization and subsequent analysis, differences in mRNA populations in the swimming muscles of the different age classes of Weddell seals will be determined. These techniques will allow for the identification of the proteins and transcription factors that influence the ontogenetic changes in myoglobin concentration, fiber type distribution and aerobic capacity. These results will increase our understanding of both the ontogeny and molecular mechanisms by which young seals acquire the physiological capabilities to make deep (up to 700 m) and long aerobic dives (ca 20 min). This study will advance knowledge of the molecular regulation for the adaptations that enable active skeletal muscle to function under hypoxic conditions; this has a broader application for human medicine especially in regards to cardiac and pulmonary disease. Additional broader impacts include the participation of underrepresented scientists and a continuation of a website in collaboration with the Science Teachers Access to Resources at Southwestern University (STARS Program) which involves weekly updates about research efforts during the field season, weekly questions/answer session involving students and teachers, and updates on research results throughout the year.", "east": 167.0, "geometry": ["POINT(163.5 -77.5)"], "keywords": "Antarctica; Biota; Oceans; Seals; Sea Surface; Southern Ocean", "locations": "Antarctica; Southern Ocean; Sea Surface", "north": -77.0, "nsf_funding_programs": null, "persons": "Lyons, W. Berry; Kanatous, Shane", "project_titles": "The Molecular Signals that Regulate the Ontogeny of Aerobic Capacity, Lipid Metabolism and Elevated Myoglobin Concentrations in the Skeletal Muscles of Weddell Seals", "projects": [{"proj_uid": "p0000536", "repository": "USAP-DC", "title": "The Molecular Signals that Regulate the Ontogeny of Aerobic Capacity, Lipid Metabolism and Elevated Myoglobin Concentrations in the Skeletal Muscles of Weddell Seals"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -78.0, "title": "The Molecular Signals that Regulate the Ontogeny of Aerobic Capacity, Lipid Metabolism and Elevated Myoglobin Concentrations in the Skeletal Muscles of Weddell Seals", "uid": "600063", "west": 160.0}]

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