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Polar Bear

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V. Literature Cited<br />

Wade, P.R. 1998. Calculating limits to the allowable<br />

human-caused mortality of cetaceans and pinnipeds.<br />

Marine Mammal Science 14:1–37.<br />

Wang, M., and J.E. Overland. 2009. An ice free<br />

summer Arctic within 30 years? Geophysical<br />

Research Letters 36:L07502.<br />

Weber, D.S., P.J. Van Coeverden De Groot, E.<br />

Peacock, M.D. Schrenzel, D.A. Perez, S. Thomas,<br />

J.M. Shelton, C.K. Else, L.L. Darby, L. Acosta, C.<br />

Harris, J. Youngblood, P. Boag, and R. Desalle. 2013.<br />

Low MHC variation in the polar bear: implications<br />

in the face of Arctic warming? Animal Conservation<br />

16: 671–683.<br />

White House. 2013a. National Strategy for the<br />

Arctic Region. Executive Office of the President,<br />

Washington, D.C., USA. http://www.whitehouse.<br />

gov/sites/default/files/docs/nat_arctic_strategy.pdf<br />

(accessed 21 October 2014).<br />

White House. 2013b. The President’s Climate Action<br />

Plan. Executive Office of the President, Washington,<br />

D.C., USA. http://www.whitehouse.gov/sites/default/<br />

files/image/ president27sclimateactionplan.pdf<br />

(accessed 21 October 2014).<br />

Wieglus, R.B., F. Sarrazin, R. Ferriere, and J.<br />

Clobert. 2001. Estimating effects of adult male<br />

mortality on grizzly bear population growth and<br />

persistence using matrix models. Biological Conservation<br />

98:293–303.<br />

Wiig, Ø., S. Amstrup, T. Atwood, K. Laidre, N. Lunn,<br />

M. Obbard, E.V. Regehr, and G. Thiemann. 2015.<br />

Ursus maritimus. The IUCN Red List of Threatened<br />

Species 2015: e.T22823A14871490.<br />

<strong>Polar</strong> <strong>Bear</strong> Conservation Management Plan 57

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