High-arctic seabird trophic variation revealed through long-term isotopic monitoring

Arctic ecosystems are especially vulnerable to anthropogenic influences including increasing contaminant levels and climatic change. To predict effects of these changes, it is important to understand trophic relationships of arctic organisms and how they change in response to environmental perturbations, especially those involving changes in sea-ice extent. We investigated feeding ecology of four seabird species, Thick-billed Murres (Uria...