Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes

@article{Fischbach2007LandwardAE,
  title={Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes},
  author={Anthony S. Fischbach and Steven C. Amstrup and David C. Douglas},
  journal={Polar Biology},
  year={2007},
  volume={30},
  pages={1395-1405}
}
Polar bears (Ursus maritimus) in the northern Alaska region den in coastal areas and on offshore drifting ice. We evaluated changes in the distribution of polar bear maternal dens between 1985 and 2005, using satellite telemetry. We determined the distribution of maternal dens occupied by 89 satellite collared female polar bears between 137°W and 167°W longitude. The proportion of dens on pack ice declined from 62% in 1985–1994 to 37% in 1998–2004 (P = 0.044) and among pack ice dens fewer… Expand

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