Carbon and Nitrogen Isotope Concentrations in Polar Bear Hair and Prey from the Alaska Beaufort and Chukchi Seas, 1978-2019

This dataset includes carbon and nitrogen isotope concentrations measured in polar bear hair and marine mammal prey muscle and blubber samples collected 1978-2019 in the Beaufort and Chukchi Seas. Marine mammal prey samples were collected opportunistically either from polar bear seal kill sites or from marine mammals harvested by Native hunters, including ringed seal, bearded seal, gray whale, Pacific walrus, bowhead whale, beluga whale, spotted seal and ribbon seal. All prey samples were collected within the Alaska Beaufort or Chukchi Sea with the exception of gray whale samples that were collected in Chukotka. More specific information on the location in which prey samples were collected are provided within the data. Hair was collected [...]