Adélie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)

Carbon and nitrogen stable isotope analyses were performed on modern and Holocene Adelie penguin guano samples collected from ornithogenic soils along the Scott Coast (Southern Victoria Land, Antarctica), from Cape Irizar to Dunlop Island, and at Cape Bird (Ross Island). Guano samples also were sieved and sorted under stereomicroscope in order to select penguin dietary remains, such as fish bones and otoliths. Carbon and nitrogen stable isotope...