Persistent organic pollutants in British Columbia grizzly bears: consequence of divergent diets.

Hibernation-associated changes in persistent organic pollutant (POP) levels and patterns in British Columbia grizzly bears (ursus arctos horribilis).

We hypothesized that depleted fat reserves in grizzly bears (Ursus arctos horribilis) following annual hibernation would reveal increases in persistent organic pollutant (POP) concentrations compared to those present in the fall. We obtained fat and hair from British Columbia grizzly bears in early spring 2004 to compare with those collected in fall 2003, with the two tissue types providing con...

Management of Grizzly Bears in British Columbia: a Review by an Independent Scientific Panel

Human Injuries Inflicted by Bears in British Columbia: 1960–97

There is controversy in British Columbia regarding how dangerous bears are. Grizzly bear (Ursus arctos) population estimates range from 10,000–13,000; black bears (U. americanus), 120,000–160,000. From 1960–97, significantly fewer grizzly bears inflicted about 3 times as many serious injuries (N = 41 versus 14) but the same number of fatal injuries (N = 8) as black bears. The trend in terms of ...

Predicting Grizzly Bear (Ursus arctos) densities in British Columbia using a multiple regression model

We determined the relationships between Grizzly Bear density and ultimate measures of ecosystem productivity and mortality at a landscape scale using multiple linear regression and field based density estimates from Grizzly Bear populations across western North America. We found that Grizzly Bear densities in non-coastal environments were positively related to the mean annual rainfall, to the p...

Management and Conservation Note Success of Grizzly Bear Population Augmentation in Northwest Montana

Augmentation of large carnivore populations can be a valuable management and recovery tool, but success of many programs has not been well documented. The Cabinet–Yaak grizzly bear (Ursus arctos) population was located in northwestern Montana and northern Idaho, USA, and was estimated at 30–40 individuals. The Cabinet Mountains portion of this area may be isolated from the remainder of the zone...