USAP-DC

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Amino acid nitrogen stable isotope values of feathers from adult and fledgling Adélie and chinstrap penguins from the South Shetlands Islands in 2012 Cite as Polito, M. (2026) "Amino acid nitrogen stable isotope values of feathers from adult and fledgling Adélie and chinstrap penguins from the South Shetlands Islands in 2012" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/None. Abstract This data set contains measurements of nitrogen (δ15N) stable isotope values of twelve individual amino acids from the feathers of adult and fledgling Adélie and chinstrap penguins from two breeding sites (Admiralty Bay, King George Island and Cape Shirreff, Livingston Island) in the South Shetlands Islands in 2012. Stable isotope analyses were conducted using a gas chromatograph coupled to a continuous flow stable isotope ratio mass spectrometer. This data set indexes each individually analyzed feather sample with breeding site (location), latitude, longitude, age group, sex, feather type analyzed, wintering area utilized based on GLS (Global Location Sensors) tracking data (adults only), and nitrogen stable isotope values of individual amino acids. Creator(s): Polito, Michael Date Created: 2026-06-06 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Award(s) NSF 1443585 NSF 2135696 NSF 2516053 Version: 1 Related Project(s) Collaborative Research: Investigating Holocene Shifts in the Diets and Paleohistory of Antarctic Krill Predators Collaborative Research: Using Multiple Stable Isotopes to Investigate Middle to Late Holocene Ecological Responses by Adelie Penguins in the Ross Sea Keywords 25 De Mayo/King George Island Antarctica Cryosphere Livingston Island