January 15, 2008 - Polar Bears
Global Warming - - Polar Bears in the news
Over the past few months Polar Bears have been in the news. As the Earths Atmosphere heats up the sea ice melts. Cause for concern is that sea ice is critical habitat for species, such as the Polar Bear.
In January 2007, the U.S. Fish and Wildlife Service proposed listing the polar bear as a threatened species under the Endangered Species Act. To ensure that the best information was available to inform the final listing decision, due in January 2008, the Secretary of the Interior, Dirk Kempthorne asked the U.S. Geological Survey to analyze existing information and generate new scientific data, models, and interpretations on polar bears and their sea ice habitats, and make them available within the decision making time frame. - (news from USGS)
Newly-released USGS information from 9 recent studies presents relationships of polar bears to present and future sea ice environments.
*Uncertainty in Climate Model Projections of Arctic Sea Ice Decline
*Polar Bears in the Southern Beaufort Sea: Stature, Mass and Cub Recruitment in Relationship to Time and Sea Ice Extent
*Polar Bear Population Status in the Northern Beaufort Sea
*Polar Bear Population Status in Southern Hudson Bay, Canada
*Polar Bears in the Southern Beaufort Sea: Demography and Population Growth in Relation to Sea Ice Conditions
*Predicting the Future Distribution of Polar Bear Habitat in the Polar Basin
*Predicting Movements of Female Polar Bears between Summer Sea Ice Foraging Habitats and Terrestrial Denning Habitats of Alaska
*Forecasting the Range-wide Status of Polar Bears in the 21st Century
You can view these titles on the USGS website: