Sentences with phrase «from polar bear biologists»

Not exact matches

«It is possible that Svalbard may have provided one such important refuge during warming periods, in which small polar bear populations survived and from which founder populations expanded during cooler periods,» argues biologist Charlotte Lundqvist of the University at Buffalo, The State University of New York, who is a co-author of the new study.

As their hunting behavior shifts from ice to land, the polar bears «have progressively arrived earlier and earlier to have access to more eggs,» says biologist Børge Moe, another principal author of the study who works at the Norwegian Institute for Nature Research in Kongsfjorden, where seabird egg predation is just beginning to increase.

I also sought reactions from some polar bear specialists and biologists focused on DNA clues to when the species split from its brown bear kin.

While Mr. Kempthorne and Dale Hall, director of the Fish and Wildlife Service, said Wednesday that they saw no separate risk to polar bears from oil and gas activity, the latest assessment of the species for the International Conservation Union, by a group of experts including Fish and Wildlife Service biologists, did include such activity in a list of threats, including toxic contaminants, shipping and recreational viewing.

Biologists are warning that warmer temperatures from climate change are forcing polar bears to swim longer distances to find stable sea ice.

Canadian biologist Dr. Mitchell Taylor, one of the foremost authorities on polar bears, says: «We're seeing an increase in bears that's really unprecedented, and in places where we're seeing a decrease in the population it's from hunting, not from climate change.»