Grizzly Bears

Grizzly Bears Isolated by Human Activity

Grizzly bears are not travelling between the southern Selkirk Mountains and adjacent populations, rendering this 70-100 bear population as genetically isolated.

Vegetation and People Influence Where Bears Roam

Grizzly bears and black bears sharing the mountains and forests of British Columbia's upper Columbia river basin keep to different types of vegetation and terrain.

Grizzly Bears That Dine on Salmon Grow Larger

The greater proportion of salmon in a grizzly bear’s diet, the bigger the bear grows.

Salmon Decline Affects Grizzly Bears

Salmon escapement at Owikeno Lake dropped too low, during a five year study, to sustain the watershed's grizzly bear population.

Scale Matters for Grizzly Bear Habitat

The types of habitat that grizzly bears frequent depends upon the scale measured.

Polar Bears

Early Ice Breakup Leads to Polar Bear Deaths

Scientists have linked a recent twenty percent decline in the number of polar bears living near the southern edge of their range to the earlier breakup of sea ice in spring.

Unstable Ice Causes Polar Bears to Move Ashore

The Arctic's warming climate has prompted Alaskan polar bears to avoid using pack ice for maternal winter dens.

Traditional Whale Harvest Feeds Polar Bears

As dwindling sea ice makes it harder for polar bears to hunt seals, the carcasses of bowhead whales left over from traditional Inupiat harvests may help sustain the endangered predators.