Temporal shift in the isotopic niche of female Antarctic fur seals from Bouvetøya

• Published in: Polar research Vol. 35; no. 1; pp. 31335 - 11
• Main Authors: Tarroux, Arnaud, Lowther, Andrew D., Lydersen, Christian, Kovacs, Kit M.
• Format: Journal Article
• Language: English
• Published: Spånga Routledge 01.01.2016; Open Academia; Norwegian Polar Institute
• Subjects: Aquatic mammals; Arctocephalus gazella; Bayesian analysis; Breeding; Breeding seasons; Climate change; Confidence intervals; Diet; Ecology; Euphausiacea; Females; Fish; Food chains; Foraging behavior; Global climate; Islands; Krill; Lipids; Marine crustaceans; Marine mammals; Niches; Physiology; predation; Predators; Prey; Probability theory; Sampling designs; Seals; Seasons; Southern Ocean; Stable isotopes; Studies; Trophic levels; trophic relationships; Scotia Sea; United Kingdom > UK; United States > US; South Georgia; Macquarie Island; Southern Ocean

The Antarctic fur seal (Arctocephalus gazella) is a key marine predator in the Southern Ocean, a region that has recently started to show changes as a result of global climate change. Here, carbon (δ 13 C) and nitrogen (δ 15 N) stable isotope analyses on whole blood and plasma samples were used to e...