Dataset Information
Amino acid nitrogen isotope values of penguins from the Antarctic Peninsula region 1930s to 2010s
Data DOI:
Cite as
Mcmahon, K. et al. (2019) "Amino acid nitrogen isotope values of penguins from the Antarctic Peninsula region 1930s to 2010s" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
This data set contains measurements of nitrogen (δ15N) stable isotope values of twelve individual amino acids from breast feathers of gentoo penguins (Pygoscelis papua) and chinstrap penguins (Pygoscelis antarctica) collected from museum archives between the 1930s and 2010s. Stable isotope analyses were conducted using a gas chromatograph coupled to a continuous flow stable isotope ratio mass spectrometer. The data set also includes trophic positions of penguins calculated from individual amino acid δ15N values. The data set indexes each individual penguin with species, collection institution, catalog number, sex, locality, latitude, longitude, year of sample collection, nitrogen isotope ratios, and calculated trophic position. Details of the data set and all relevant methods are provided in McMahon et al. 2020 Proc Natl Acad Sci DOI: 10.1073/pnas.1913093116
Date Created:
USAP-DC (current)
Spatial Extent(s)
West: -63.56, East: -44.6, South: -64.58, North: -60.72
Temporal Extent(s)
Start: 1930-01-01 - End: 2010-12-31
  1. McMahon, K. W., Michelson, C. I., Hart, T., McCarthy, M. D., Patterson, W. P., & Polito, M. J. (2019). Divergent trophic responses of sympatric penguin species to historic anthropogenic exploitation and recent climate change. Proceedings of the National Academy of Sciences Dec 2019, 201913093 (doi:10.1073/pnas.1913093116)
Supplemental Docs
Data Files
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This dataset has been downloaded 5 times since March 2017 (based on unique date-IP combinations)