Ancient polar-bear fossil yields genome

Nature ◽  
2010 ◽  
Author(s):  
Matt Kaplan
Keyword(s):  
Polar Bear

An incident of polar bear infanticide and cannibalism on Phippsøya, Svalbard

Polar Record ◽  
2007 ◽  
Vol 43 (2) ◽  
pp. 171-173 ◽  
Author(s):  
Ian R. Stone ◽  
Andrew E. Derocher
Keyword(s):  
Adult Male ◽  
Polar Bear ◽  
Poor Condition ◽  
Close Proximity

A case of polar bear infanticide and cannibalism is reported from Phippsøya, Svalbard. In this instance, a cub of some 7 months was killed by an adult male bear, which was in poor condition, in the close proximity of the mother, which was also in poor condition. It seems probable that the attack was made for nutritional gain.

scholarly journals Simulating Polar Bear Energetics during a Seasonal Fast Using a Mechanistic Model

PLoS ONE ◽  
2013 ◽  
Vol 8 (9) ◽  
pp. e72863 ◽  
Author(s):  
Paul D. Mathewson ◽  
Warren P. Porter
Keyword(s):  
Polar Bear ◽  
Mechanistic Model

Distribution and abundance of ringed (Phoca hispida) and bearded seals (Erignathus barbatus) in western Hudson Bay

1997 ◽  
Vol 54 (4) ◽  
pp. 914-921 ◽  
Author(s):  
N J Lunn ◽  
I Stirling ◽  
S N Nowicki
Keyword(s):  
Polar Bear ◽  
Hudson Bay ◽  
Phoca Hispida ◽  
Current Estimate ◽  
Ringed Seals ◽  
Erignathus Barbatus ◽  
The Mean ◽  
Western Hudson Bay ◽  
The Relationship ◽  
Bearded Seals

We flew a medium-altitude, systematic, strip-transect survey for ringed (Phoca hispida) and bearded seals (Erignathus barbatus) over western Hudson Bay in early June 1994 and 1995. The mean density (per square kilometre) of ringed seals hauled out on the ice was four times higher in 1995 (1.690) than in 1994 (0.380). The 1994 survey appeared to underestimate seal abundance because it was flown too late. Ringed seals preferred high ice cover habitat (6 + /8 ice) and, within this habitat, favoured cracking ice and large floes. We found no consistent effect of either wind or cloud cover on habitat preference. We estimated a total of 1980 bearded seals and 140<|>880 ringed seals hauled out on the sea ice in June 1995. A recent review of the relationship between ringed seal and polar bear (Ursus maritimus) populations suggests that a visible population of this size should support a population of up to 1300 polar bears, which is in general agreement with the current estimate of 1250-1300 bears in western Hudson Bay.

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