[1] Summary of polar bear population status per 2014 (2015). IUCN/SSC PBSG. http://pbsg.npolar.no/en/status/status-table.html. Accessed online 06 April 2015
[2a] Regehr, E.V., Lunn, N.J., Amstrup, S.C. & Stirling, I. (2007). “Effects of earlier sea ice breakup on survival and population size of polar bears in western Hudson Bay.” Journal of Wildlife Management 71(8): 2673–2683. Link to pdf.
[2b] http://news.nationalgeographic.com/news/watching-polar-bears-eat-goose-eggs-in-warmer-arctic/
[3] Bromaghin, J.F, McDonald, T. L., Stirling, I., Derocher, A.E., Richardson, E.S., Regehr, E.V., Douglas, D.C., Durner, G.M., Atwood, T. & Amstrup, S.C. In press. “Polar bear population dynamics in the southern Beaufort Sea during a period of sea ice decline.” Ecological Applications.
[4] http://video.nationalgeographic.com/video/news/wild-chronicles/arctic-seabirds-wcvin (Polar bear eating birds and birds having difficulty feeding because of pack ice retreat on Cooper Island near Barrow, Alaska.)
[6] Polar Bears International. (2015). “Polar Bears and Sea Ice Regions.” http://www.polarbearsinternational.org/where-do-polar-bears-live/polar-bears-sea-ice-regions
