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Why polar bears are disappearing

cannot aggressively oppose hunters in these nations because they must first determine whether or not they have licenses to hunt polar bears.

The likelihood that polar bears will still be an extant species in the wild or even in captivity in 50 years time seems a daunting proposition. They face a considerable up-hill battle to continue. All those that want their descendants to have the opportunity to see living polar bears need to do whatever they can to try to ensure their continued existence.


Bibliography:

Bruce, D., Darling, N., Seeland, K., Oeltgen, P., Nilekani, S. & Amstrup, S.(1989) Is the polar bear (Ursus maritimus) a Hibernator?: continued studies on opioids and hibernation. Pharmacology Biochemistry and Behaviour (1990) 35-3, 705-711.

De Bendern, P. (2002) Toxins put artic polar bears and humans at risk. http://www.planetark.org/daily newsstory.cfm/newsid/18010/sto ry.htm

Dyck, M. & Baydack, R. (2002) Vigilance behaviour of polar bears (Ursus maritimus) in the context of wildlife-viewing activities at Churchill, Manitoba, Canada. Biological Conservation 116 (2004) 343-350.

Fisk, A., de Wit, C., Wayland, M., Kuzyk, Z., Burgess, N., Letcher, R. et al. (2005) An assessment of the toxicological significance of anthropogenic contaminants in Canadian artic wildlife. The Science of the Total Environment 351-352: pgs 57-93.

Hedberg, G. (2002) Polar Bears IN Gage, L. (Editor) Hand-rearing Wild and Domestic Mammals. Ames: Iowa State Press.

Macdonald, D. (Editor) (2001) The New Encyclopedia of Mammals. Oxford: Oxford University Press.

Mauritzen, M., Derocher, A., Pavlova, O. & Wiig, . (2002) Female polar bears, Ursus maritimus, on the Barents Sea drift ice: walking the treadmill. Animal Behaviour (2003) 66, 107-113.

Polarbearsinternationa l.org
http://www.polarbearsinte rnational.org/photo-gallery/20 04-2005-polar- bear-photos/

Redale, W. (2005) Polar bears drown as ice shelf melts. The Sunday Times, December 18, 2005.

Tributsch, H., Goslowsky, H., Kppers, U. & Wetzel H. (1990) Light collection and solar sensing through the polar bear pelt. Solar Energy Materials 21:2-3, 219-236.

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Why polar bears are disappearing

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