USAP-DC

{"dp_type": "Dataset", "free_text": "LTER Palmer Station"}

[{"awards": "1543412 Reinfelder, John", "bounds_geometry": ["POLYGON((-69.9043 -65.8708,-69.74203 -65.8708,-69.57976 -65.8708,-69.41749 -65.8708,-69.25522 -65.8708,-69.09295 -65.8708,-68.93068 -65.8708,-68.76841 -65.8708,-68.60614 -65.8708,-68.44387 -65.8708,-68.2816 -65.8708,-68.2816 -66.05698,-68.2816 -66.24316,-68.2816 -66.42934,-68.2816 -66.61552,-68.2816 -66.8017,-68.2816 -66.98788,-68.2816 -67.17406,-68.2816 -67.36024,-68.2816 -67.54642,-68.2816 -67.7326,-68.44387 -67.7326,-68.60614 -67.7326,-68.76841 -67.7326,-68.93068 -67.7326,-69.09295 -67.7326,-69.25522 -67.7326,-69.41749 -67.7326,-69.57976 -67.7326,-69.74203 -67.7326,-69.9043 -67.7326,-69.9043 -67.54642,-69.9043 -67.36024,-69.9043 -67.17406,-69.9043 -66.98788,-69.9043 -66.8017,-69.9043 -66.61552,-69.9043 -66.42934,-69.9043 -66.24316,-69.9043 -66.05698,-69.9043 -65.8708))"], "date_created": "Sun, 31 Mar 2019 00:00:00 GMT", "description": "This dataset includes 16S rRNA gene libraries produced from DNA extracted from pooled digestive tracts of Antarctic krill (Euphausia superba) collected in coastal waters west of the Antarctic Peninsula in 2014.", "east": -68.2816, "geometry": ["POINT(-69.09295 -66.8017)"], "keywords": "Antarctica; Biota; Krill; LTER Palmer Station; Microbiome; Oceans; Southern Ocean", "locations": "Southern Ocean; Antarctica", "north": -65.8708, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Reinfelder, John", "project_titles": "Methylmercury in Antarctic Krill Microbiomes", "projects": [{"proj_uid": "p0010023", "repository": "USAP-DC", "title": "Methylmercury in Antarctic Krill Microbiomes"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": "LTER", "south": -67.7326, "title": "16S rRNA gene libraries of krill gut microbial communities", "uid": "601171", "west": -69.9043}, {"awards": "1656344 Bowman, Jeff", "bounds_geometry": ["POLYGON((-64.1 -64.75,-64.08 -64.75,-64.06 -64.75,-64.04 -64.75,-64.02 -64.75,-64 -64.75,-63.98 -64.75,-63.96 -64.75,-63.94 -64.75,-63.92 -64.75,-63.9 -64.75,-63.9 -64.775,-63.9 -64.8,-63.9 -64.825,-63.9 -64.85,-63.9 -64.875,-63.9 -64.9,-63.9 -64.925,-63.9 -64.95,-63.9 -64.975,-63.9 -65,-63.92 -65,-63.94 -65,-63.96 -65,-63.98 -65,-64 -65,-64.02 -65,-64.04 -65,-64.06 -65,-64.08 -65,-64.1 -65,-64.1 -64.975,-64.1 -64.95,-64.1 -64.925,-64.1 -64.9,-64.1 -64.875,-64.1 -64.85,-64.1 -64.825,-64.1 -64.8,-64.1 -64.775,-64.1 -64.75))"], "date_created": "Mon, 04 Feb 2019 00:00:00 GMT", "description": "This dataset contains bacterial production, primary production, chlorophyll biomass, and photosynthetic parameters for samples archived in NCBI SRA as SUB4579142.", "east": -63.9, "geometry": ["POINT(-64 -64.875)"], "keywords": "Antarctic; Antarctica; Bacteria; Bacteria Production; Biota; Chlorophyll; LTER Palmer Station; Primary Production; Sea Ice; Southern Ocean", "locations": "Antarctic; Antarctica; Southern Ocean", "north": -64.75, "nsf_funding_programs": "Antarctic Organisms and Ecosystems", "persons": "Bowman, Jeff", "project_titles": "A Preliminary Assessment of the Influence of Ice Cover on Microbial Carbon and Energy Acquisition during the Antarctic Winter-spring Seasonal Transition", "projects": [{"proj_uid": "p0010003", "repository": "USAP-DC", "title": "A Preliminary Assessment of the Influence of Ice Cover on Microbial Carbon and Energy Acquisition during the Antarctic Winter-spring Seasonal Transition"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -65.0, "title": "Metadata accompanying BioProject SUB4579142", "uid": "601153", "west": -64.1}, {"awards": "0838996 Hollibaugh, James", "bounds_geometry": ["POLYGON((-79 -63,-77.5 -63,-76 -63,-74.5 -63,-73 -63,-71.5 -63,-70 -63,-68.5 -63,-67 -63,-65.5 -63,-64 -63,-64 -63.8,-64 -64.6,-64 -65.4,-64 -66.2,-64 -67,-64 -67.8,-64 -68.6,-64 -69.4,-64 -70.2,-64 -71,-65.5 -71,-67 -71,-68.5 -71,-70 -71,-71.5 -71,-73 -71,-74.5 -71,-76 -71,-77.5 -71,-79 -71,-79 -70.2,-79 -69.4,-79 -68.6,-79 -67.8,-79 -67,-79 -66.2,-79 -65.4,-79 -64.6,-79 -63.8,-79 -63))"], "date_created": "Wed, 01 Jan 2014 00:00:00 GMT", "description": "Ammonia oxidation is the first step in the conversion of regenerated nitrogen to dinitrogen gas, a 3-step pathway mediated by 3 distinct guilds of bacteria and archaea. Ammonia oxidation and the overall process of nitrification-denitrification have received relatively little attention in polar oceans where the effects of climate change on biogeochemical rates are likely to be pronounced. Previous work on Ammonia Oxidizing Archaea (AOA) in the Palmer LTER study area West of the Antarctic Peninsula (WAP), has suggested strong vertical segregation of crenarchaeote metabolism, with the \u0027winter water\u0027 (WW, ~50-100 m depth range) dominated by non-AOA crenarchaeotes, while Crenarchaeota populations in the \u0027circumpolar deep water\u0027 (CDW), which lies immediately below the winter water (150-3500 m), are dominated by AOA. Analysis of a limited number of samples from the Arctic Ocean did not reveal a comparable vertical segregation of AOA, and suggested that AOA and Crenarchaeota abundance is much lower there than in the Antarctic. These findings led to 3 hypotheses that will be tested in this project: 1) the apparent low abundance of Crenarchaeota and AOA in Arctic Ocean samples may be due to spatial or temporal variability in populations; 2) the WW population of Crenarchaeota in the WAP is dominated by a heterotroph; 3) the WW population of Crenarchaeota in the WAP \u0027grows in\u0027 during spring and summer after this water mass forms.\n\nThe study will contribute substantially to understanding an important aspect of the nitrogen cycle in the Palmer LTER (Long Term Ecological Research) study area by providing insights into the ecology and physiology of AOA. The natural segregation of crenarchaeote phenotypes in waters of the WAP, coupled with metagenomic studies in progress in the same area by others (A. Murray, H. Ducklow), offers the possibility of major breakthroughs in understanding of the metabolic capabilities of these organisms. This knowledge is needed to model how water column nitrification will respond to changes in polar ecosystems accompanying global climate change. The Principal Investigator will participate fully in the education and outreach efforts of the Palmer LTER, including making highlights of our findings available for posting to their project web site and participating in outreach (for example, Schoolyard LTER). The research also will involve undergraduates (including the field work if possible) and will support high school interns in the P.I.\u0027s laboratory over the summer.\n", "east": -64.0, "geometry": ["POINT(-71.5 -67)"], "keywords": "Biota; Chemistry:fluid; Chemistry:Fluid; LMG1006; LMG1101; LTER Palmer Station; Oceans; Southern Ocean", "locations": "Southern Ocean", "north": -63.0, "nsf_funding_programs": null, "persons": "Hollibaugh, James T.", "project_titles": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula", "projects": [{"proj_uid": "p0000359", "repository": "USAP-DC", "title": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -71.0, "title": "Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula", "uid": "600105", "west": -79.0}, {"awards": "0838830 Cottrell, Matthew", "bounds_geometry": ["POLYGON((-64.079666 -64.77966,-64.0757659 -64.77966,-64.0718658 -64.77966,-64.0679657 -64.77966,-64.0640656 -64.77966,-64.0601655 -64.77966,-64.0562654 -64.77966,-64.0523653 -64.77966,-64.0484652 -64.77966,-64.0445651 -64.77966,-64.040665 -64.77966,-64.040665 -64.783261,-64.040665 -64.786862,-64.040665 -64.790463,-64.040665 -64.794064,-64.040665 -64.797665,-64.040665 -64.801266,-64.040665 -64.804867,-64.040665 -64.808468,-64.040665 -64.812069,-64.040665 -64.81567,-64.0445651 -64.81567,-64.0484652 -64.81567,-64.0523653 -64.81567,-64.0562654 -64.81567,-64.0601655 -64.81567,-64.0640656 -64.81567,-64.0679657 -64.81567,-64.0718658 -64.81567,-64.0757659 -64.81567,-64.079666 -64.81567,-64.079666 -64.812069,-64.079666 -64.808468,-64.079666 -64.804867,-64.079666 -64.801266,-64.079666 -64.797665,-64.079666 -64.794064,-64.079666 -64.790463,-64.079666 -64.786862,-64.079666 -64.783261,-64.079666 -64.77966))"], "date_created": "Tue, 01 Jan 2013 00:00:00 GMT", "description": "Light quality and availability are likely to change in polar ecosystems as ice coverage and thickness decrease. How microbes adjust to these and other changes will have huge impacts on the polar marine ecosystems. Little is known about photoheterotrophic prokaryotes, which are hypothesized to gain a metabolic advantage by harvesting light energy in addition to utilizing dissolved organic matter (DOM). Photoheterotrophy is not included in current models of carbon cycling and energy flow. This research will examine three questions: 1. Are photoheterotrophic microbes present and active in Antarctic waters in winter and summer? 2. Does community structure of photoheterotrophs shift between summer and winter? 3. Which microbial groups assimilate more DOM in light than in the dark? The research will test hypotheses about activity of photoheterotrophs in winter and in summer, shifts in community structure between light and dark seasons and the potentially unique impacts of photoheterotrophs on biogeochemical processes in the Antarctic. The project will directly support a graduate student, will positively impact the NSF REU program at the College of Marine and Earth Studies, and will include students from the nation\u0027s oldest historical minority college. The results will be featured during weekly tours of Lewes facilities (about 1000 visitors per year) and during Coast Day, an annual open-house that attracts about 10,000 visitors.", "east": -64.040665, "geometry": ["POINT(-64.0601655 -64.797665)"], "keywords": "Antarctic Peninsula; Biota; LTER Palmer Station; Microbiology; Oceans; Southern Ocean", "locations": "Antarctic Peninsula; Southern Ocean", "north": -64.77966, "nsf_funding_programs": null, "persons": "Cottrell, Matthew; Kirchman, David", "project_titles": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem", "projects": [{"proj_uid": "p0000473", "repository": "USAP-DC", "title": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem"}], "repo": "USAP-DC", "repositories": "USAP-DC", "science_programs": null, "south": -64.81567, "title": "Photoheterotrophic Microbes in the West Antarctic Peninsula Marine Ecosystem", "uid": "600097", "west": -64.079666}]

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