{"dp_type": "Dataset", "free_text": "Amino Acid Stable Isotope Analysis"}
[{"awards": "1826712 McMahon, Kelton; 1443585 Polito, Michael; 1443424 McMahon, Kelton; 1443386 Emslie, Steven", "bounds_geometry": ["POLYGON((-180 -60.72,-166.45 -60.72,-152.9 -60.72,-139.35 -60.72,-125.8 -60.72,-112.25 -60.72,-98.69999999999999 -60.72,-85.14999999999999 -60.72,-71.6 -60.72,-58.05 -60.72,-44.5 -60.72,-44.5 -62.515,-44.5 -64.31,-44.5 -66.105,-44.5 -67.9,-44.5 -69.695,-44.5 -71.49000000000001,-44.5 -73.285,-44.5 -75.08,-44.5 -76.875,-44.5 -78.67,-58.05 -78.67,-71.6 -78.67,-85.15 -78.67,-98.7 -78.67,-112.25 -78.67,-125.80000000000001 -78.67,-139.35000000000002 -78.67,-152.9 -78.67,-166.45 -78.67,180 -78.67,178.4 -78.67,176.8 -78.67,175.2 -78.67,173.6 -78.67,172 -78.67,170.4 -78.67,168.8 -78.67,167.2 -78.67,165.6 -78.67,164 -78.67,164 -76.875,164 -75.08,164 -73.285,164 -71.49,164 -69.695,164 -67.9,164 -66.105,164 -64.31,164 -62.515,164 -60.72,165.6 -60.72,167.2 -60.72,168.8 -60.72,170.4 -60.72,172 -60.72,173.6 -60.72,175.2 -60.72,176.8 -60.72,178.4 -60.72,-180 -60.72))"], "date_created": "Thu, 17 Sep 2026 00:00:00 GMT", "description": "This dataset contains measurements of bulk tissue carbon and nitrogen stable isotopes, compound-specific amino acid carbon and nitrogen stable isotopes, and calculated relative trophic positions from modern (2000\u20132016) and historical (1841\u20131995) breast feather samples of Ad\u00e9lie penguins (Pygoscelis adeliae). Samples were collected across multiple sites in the Ross Sea and Antarctic Peninsula regions of Antarctica. Historical feathers were sampled from museum study skin collections across 18 institutions, and modern feathers were collected from live-captured individuals or molted feather samples.Bulk stable isotope analysis (SIA) was conducted using elemental analyzer continuous flow isotope ratio mass spectrometry (EA-CF-IRMS). Compound-specific isotope analysis of amino acids (CSIA-AA) was performed using gas chromatography combustion isotope ratio mass spectrometry (GC-C-IRMS) for up to fourteen individual amino acids. Relative trophic position (TP) was calculated using baseline-corrected multi-trophic discrimination factor equations derived from glutamic acid and phenylalanine nitrogen stable isotope values. Details of the dataset, analytical methods, and ecological interpretations are provided in Michelson et al. 2026, Marine Ecology Progress Series, DOI: 10.3354/meps152331.", "east": 164.0, "geometry": ["POINT(-120.25 -69.695)"], "keywords": "Adelie Penguin; Amino Acid Stable Isotope Analysis; Antarctica; Antarctic Peninsula; Biota; Cryosphere; Pygoscelis Adeliae; Ross Sea; Trophic Position", "locations": "Antarctica; Ross Sea; Antarctic Peninsula", "north": -60.72, "nsf_funding_programs": "Antarctic Organisms and Ecosystems; Antarctic Organisms and Ecosystems", "persons": "Michelson, Chantel; McMahon, Kelton; Hart, Tom; Emslie, Steven D.; McCarthy, Matthew; Patterson, William; 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": -78.67, "title": "Bulk tissue and amino acid stable isotope values of modern and historical Ad\u00e9lie penguin (Pygoscelis adeliae) feathers from the Ross Sea and Antarctic Peninsula regions (1840s to 2010s)", "uid": "602094", "west": -44.5}]
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| Dataset Title/Abstract/Map | NSF Award(s) | Date Created | PIs / Scientists | Project Links | Abstract | Bounds Geometry | Geometry | Selected | Visible |
|---|---|---|---|---|---|---|---|---|---|
|
Bulk tissue and amino acid stable isotope values of modern and historical Adélie penguin (Pygoscelis adeliae) feathers from the Ross Sea and Antarctic Peninsula regions (1840s to 2010s)
|
1826712 1443585 1443424 1443386 |
2026-09-17 | Michelson, Chantel; McMahon, Kelton; Hart, Tom; Emslie, Steven D.; McCarthy, Matthew; Patterson, William; Polito, Michael |
Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators |
This dataset contains measurements of bulk tissue carbon and nitrogen stable isotopes, compound-specific amino acid carbon and nitrogen stable isotopes, and calculated relative trophic positions from modern (2000–2016) and historical (1841–1995) breast feather samples of Adélie penguins (Pygoscelis adeliae). Samples were collected across multiple sites in the Ross Sea and Antarctic Peninsula regions of Antarctica. Historical feathers were sampled from museum study skin collections across 18 institutions, and modern feathers were collected from live-captured individuals or molted feather samples.Bulk stable isotope analysis (SIA) was conducted using elemental analyzer continuous flow isotope ratio mass spectrometry (EA-CF-IRMS). Compound-specific isotope analysis of amino acids (CSIA-AA) was performed using gas chromatography combustion isotope ratio mass spectrometry (GC-C-IRMS) for up to fourteen individual amino acids. Relative trophic position (TP) was calculated using baseline-corrected multi-trophic discrimination factor equations derived from glutamic acid and phenylalanine nitrogen stable isotope values. Details of the dataset, analytical methods, and ecological interpretations are provided in Michelson et al. 2026, Marine Ecology Progress Series, DOI: 10.3354/meps152331. | ["POLYGON((-180 -60.72,-166.45 -60.72,-152.9 -60.72,-139.35 -60.72,-125.8 -60.72,-112.25 -60.72,-98.69999999999999 -60.72,-85.14999999999999 -60.72,-71.6 -60.72,-58.05 -60.72,-44.5 -60.72,-44.5 -62.515,-44.5 -64.31,-44.5 -66.105,-44.5 -67.9,-44.5 -69.695,-44.5 -71.49000000000001,-44.5 -73.285,-44.5 -75.08,-44.5 -76.875,-44.5 -78.67,-58.05 -78.67,-71.6 -78.67,-85.15 -78.67,-98.7 -78.67,-112.25 -78.67,-125.80000000000001 -78.67,-139.35000000000002 -78.67,-152.9 -78.67,-166.45 -78.67,180 -78.67,178.4 -78.67,176.8 -78.67,175.2 -78.67,173.6 -78.67,172 -78.67,170.4 -78.67,168.8 -78.67,167.2 -78.67,165.6 -78.67,164 -78.67,164 -76.875,164 -75.08,164 -73.285,164 -71.49,164 -69.695,164 -67.9,164 -66.105,164 -64.31,164 -62.515,164 -60.72,165.6 -60.72,167.2 -60.72,168.8 -60.72,170.4 -60.72,172 -60.72,173.6 -60.72,175.2 -60.72,176.8 -60.72,178.4 -60.72,-180 -60.72))"] | ["POINT(-120.25 -69.695)"] | false | false |
