Study: Climate Change Is A Chief Threat to Polar Bears

An adult female polar bear and her two cubs travel across the sea ice of the Arctic Ocean north of the Alaska coast (photo by U.S. Geological Survey).
An adult female polar bear and her two cubs travel across the sea ice of the Arctic Ocean north of the Alaska coast (photo by U.S. Geological Survey).

A new federal study shows Alaska’s two polar bear populations could be greatly decreased in a decade. The research also shows global warming is by far the biggest threat to polar bear populations across the arctic compared to other stressors like hunting and pollutants. The information is critical to wildlife managers as they develop and implement a recovery plan for the species that was released July 2nd. The polar bear was listed as threatened under the Endangered Species Act in 2008.

Download Audio

Todd Atwood is a research biologist with the United States Geological Survey and lead author of the study. He says indirectly greenhouse gases are driving the loss of polar bear habitat- sea ice.

Polar Bear Ecoregions: In the Seasonal Ice Ecoregion (see map), sea ice melts completely in summer and all polar bears must be on land. In the Divergent Ice Ecoregion, sea ice pulls away from the coast in summer, and polar bears must be on land or move with the ice as it recedes north. In the Convergent Ice and Archipelago Ecoregions, sea ice is generally retained during the summer. (Photo by USGS)
Polar Bear Ecoregions: In the Seasonal Ice Ecoregion (see map), sea ice melts completely in summer and all polar bears must be on land. In the Divergent Ice Ecoregion, sea ice pulls away from the coast in summer, and polar bears must be on land or move with the ice as it recedes north. In the Convergent Ice and Archipelago Ecoregions, sea ice is generally retained during the summer. (Photo by USGS)
SHARE
Previous articleState Lifts Burn Ban, OKs Fireworks Before the 4th
Next articleShell Gets Federal Approval to Head North, With Some Stipulations
Lori Townsend is the News Director for the Alaska Public Radio Network. She got her start in broadcasting at the age of 11 as the park announcer of the fast pitch baseball games in Deer Park, Wisconsin. She has worked in print and broadcast journalism for more than 18 years. She was the co-founder and former Editor of Northern Aspects, a magazine featuring northern Wisconsin writers and artists. She worked for 7 years at tribal station WOJB on the Lac Courte Oreilles Ojibway Reservation in Wisconsin, first as an on-air programmer and special projects producer and eventually News Director. In 1997 she co-hosted a continuing Saturday afternoon public affairs talk program on station KSTP in St. Paul, Minnesota. Radio brought her to Alaska where she worked as a broadcast trainer for Native fellowship students at Koahnic Broadcasting. Following her work there, she helped co-found the non-profit broadcast company Native Voice Communications with veteran Alaskan broadcasters Nellie Moore, D’Anne Hamilton, Len Anderson, Sharon McConnell and Veronica Iya. NVC created the award-winning Independent Native News as well as producing many other documentaries and productions. Townsend was NVC’s technical trainer and assistant producer of INN. Through her freelance work, she has produced news and feature stories nationally and internationally for Independent Native News, National Native News, NPR , Pacifica, Monitor Radio, Radio Netherlands and AIROS. Her print work and interviews have been published in News from Indian Country, Yakama Nation Review and other publications. Ms. Townsend has also worked as a broadcast trainer for the Native American Journalist’s Association and with NPR’s Doug Mitchell and as a freelance editor. Townsend is the recipient of numerous awards for her work from the Alaska Press Club, the Native American Journalists Association and a gold and a silver reel award from the National Federation of Community Broadcasters. Townsend was the recipient of a Fellowship at the Metcalf Institute for Marine and Environmental Reporting in Rhode Island as well as a fellowship at the Knight Digital Media Center in Berkeley. She is an avid reader, a rabid gardener and counts water skiing, training horses, diving and a welding certification among her past and current interests. ltownsend (at) alaskapublic (dot) org  |  907.550.8452 | About Lori