Advancing the Sea Ice Hypothesis: Trophic Interactions Among Breeding Pygoscelis Penguins With Divergent Population Trends Throughout the Western Antarctic Peninsula

• Published in: Frontiers in Marine Science
• Main Authors: Kristen B. Gorman, Kate E. Ruck, Tony D. Williams, William R. Fraser
• Format: Article in Journal/Newspaper
• Language: English
• Published: Frontiers Media S.A. 2021
• Subjects: δ13C and δ15N stable isotopes; food web; Pygoscelis penguin; reproduction; sea ice; western Antarctic Peninsula; Science; Q; General. Including nature conservation; geographical distribution; QH1-199.5; Antarctic; Antarctic Peninsula; Anvers; Anvers Island; Charcot; Antarc*; Antarctic Krill; antarcticus; Euphausia superba; Pygoscelis adeliae; Pygoscelis papua; Sea ice
• Online Access: https://doi.org/10.3389/fmars.2021.526092; https://doaj.org/article/8ad2d208c06b4825b70c2e6af00845c2

We evaluated annual and regional variation in the dietary niche of Pygoscelis penguins including the sea ice-obligate Adélie penguin (Pygoscelis adeliae), and sea ice-intolerant chinstrap (Pygoscelis antarcticus) and gentoo (Pygoscelis papua) penguins, three species that nest throughout the western...