To learn more about polar bears and what is currently being done click on the links below:
1) http://www.worldwildlife.org/gift-center/gifts/Species-Adoptions/Polar-Bear.aspx?sc=AWY1200WC900
2) http://www.alaskawild.org/our-issues/offshore-campaign/
3) http://www.polarbearsinternational.org/
References:
1) Amstrup, S.C. 2003. Polar bear, Ursus maritimus. Chapter 27 In Wild Mammals of North America: biology, management, and conservation. Edited by G.A. Feldhamer, B.C. Thompson, and J.A. Chapman. John Hopkins University Press, Baltimore. pp. 587-610.
2) Polar Bear Diet." World Wildlife Fund. 2011. Web. 9 Feb 2012. <http://www.worldwildlife.org/species/finder/polarbear
3) Sterling, Ian, Guravich, Dan. Polar Bears. 2nd. Michigan: University of Michigan Press, 1998.
4) Derych, John. "Polat Bear Facts." North American Bear Center, 2001. Web. 12 Feb. 2012. <http://ftp.bear.org/website/bear-pages/polar-bear/22/70-polar-bear-facts.html
5) Hunter, C.M., H. Caswell, M.C. Runge, S.C. Amstrup, E.V. Regehr, and I. Sterling. 2007. Polar bears in the southern Beaufort Sea II: Demography and population growth in relation to sea ice conditions. USGS Alaska Science Center, Anchorage, Administrative Report.
6) Feldman, VanNess. "Polar Bear Listed as a Threatened Species Under the Endangered Species Act Due to Climate Change Effects on Sea Ice Habitat." Issue Alert 20 May 2008.
7) Schliebe, S., Wiig, Ø., Derocher, A. & Lunn. Ursus maritimus. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>.
8) Polar Bears and Pollution." IUCN/SSC Polar Bear Specialist Group. N.p., 01 25 2009. Web. 6 Mar 2012
9) Polar Bear Tracker. World Wildlife Fund. 2011. 7 Mar 2011. http://polarbears.wwf.ca/#
10) Norris, Stefan, Rosentrater Lynn, and Pal Eid. "Polar Bears at Risk." WorldWildLife. Worlf Wide Fund for Nature, May 2002. Web. 7 Mar 2012. <www.wwf.org.uk/filelibrary/pdf/polar_bears_at_risk_report.pdf>.
11) Riewe, R. (1991). Inuit use of the sea ice. Arctic and Alpine Research, 23(1), 3-10.
12) Amstrup, S.C., I. Stirling, and J.W. Lentfer. 1986. Past and present status of polar bears in Alaska. Wildlife Society Bulletin. 14:241-254.
13) Cluff, H. Dean, Mitchell K. Taylor, Jeff Laake, Philip D. McLoughlin, and Francois Messier. 2006. Demographic Parameters and Harvest-Explicit Population Viability Analysis for Polar Bears in M'Clintock Channel, Nunavut, Canada. Journal of Wildlife Management: December 2006, Vol. 70, No. 6, pp. 1667-1673.
14) "Double Trouble For Polar Bears." National Wildlife Federation. Nothern Alaska Enviromental Center, 2009. Web. 7 Mar 2012. <http://www.nwf.org/~/media/PDFs/Wildlife/DoubleTroubleForPolarBears
15) Molnar PK, Derocher AE, Thiemann GW, Lewis MA (2010). Predicting survival, reproduction and abundance of polar bears under climate change. Biol Conserv. 143:1612–1622
16) "National Snow and Ice Data Center (NSIDC)." National Snow and Ice Data Center (NSIDC). Web. 8 Feb. 2011. http://nsidc.org/.
17) Siegel, K., Cummings, B., Moritz, A. & Nowicki, B., 2007. Not Too Late to Save the Polar Bear: A Rapid Action Plan to Address the Arctic Meltdown. Center for Biological Diversity. 7 Mar 2011.
18) Kovacs, Kit M., Christian Lydersen, James E. Overland, and Sue E. Moore. 2010. Impacts of changing sea-ice conditions on Arctic marine mammals. ARCTIC OCEAN DIVERSITY SYNTHESIS. 2010.
19) Hunter, Christine M., Hal Caswell, Michael C. Runge, Eric V. Regehr, Steve C. Amstrup, and Ian Stirling. 2010. Climate change threatens polar bear populations: a stochastic demographic analysis. Ecology 91:2883–2897.
20) Davies, Ella. “Polar bear's epic nine day swim in search of sea ice.” BBC – Earth News. 25 Jan 2011. 28 Sept 2011. http://news.bbc.co.uk/earth/hi/earth_news/newsid_9369000/9369317.stm
21) Regehr, E. V., N.N. Lunn, I. Stirling, and S.C. Amstrup. 2007. Effects of earlier sea ice breakup on survival and population size of polar bears in Western Hudson Bay. Journal of Wilelife Management. 71(8):00-00
22) Amstrup, S.C., I. Sterling, T.C. Smith, C. Perham, and G.W, Thiemann. 2006. Recent observations of intraspecific predation and cannibalism among polar bears in the southern Beaufort Sea. Polar Biology. 29(11): 997-1002.
23) Aars, J., N. J. Lunn, and A.E. Derocher, editors.2006. Polar Bears: Proceedings of the Fourteenth Working Meeting of the IUCN/SSC Polar Bear Specialist Group.
24) Amstrup, S.C., B.G. Marcot, and D.C. Douglas. 2007. Forecasting the rangewide status of polar bears at selected times in the 21st century. USGS Alaska Science Center, Anchorage, Administrative Report.
25) Polar Bear." U.S. Fish& Wildlife Service, 2009. Web. 01 Mar 2012. http://www.fws.gov/endangered/esa-library/pdf/polar_bear.pdf.
25) Polar Bear." U.S. Fish& Wildlife Service, 2009. Web. 01 Mar 2012. http://www.fws.gov/endangered/esa-library/pdf/polar_bear.pdf.
26) Schliebe, Scott, Thomas Evans, and et al. "Range-Wide Status Review of The Polar Bear."U.S.Fish& Wildlife Services, 2006. Web. 01 Mar 2012.
