CIRUN - Climate Information: Responding to User Needs
Home > Environmental Change in the News

Environmental Change in the News

Polar bear dens could be susceptible to global warming

Published: Tuesday, June 26, 2012

As the Canadian Arctic grows warmer, polar bears that dig dens to the west of the Hudson Bay may face more challenging winters.

An increase in forest fires has destroyed dozens of dens over the last decade, and warmer winters are causing dens made of snow to collapse, sometimes killing mother bears and their cubs. Polar bears that survive a den collapse often have little energy left to build a new one.

"Like Goldilocks' bed, snow has to be just right -- not too soft and not too hard," said Andrew Derocher, a polar bear expert at the University of Alberta.

A shorter ice season has also hindered the bears' ability to hunt and store fat.

The denning region of western Hudson Bay has rarely experienced fires in the past, but warmer and drier conditions have triggered an increase in recent years, and climate models predict more forest fires are in store in the future (Ed Struzik, Edmonton Journal, June 24). -- LJ


Reprinted from ClimateWire with permission from Environment & Energy Publishing, LLC. www.eenews.net. 202-628-6500

 

Back to Top

Reprinted from ClimateWire with permission from Environment & Energy Publishing, LLC. www.eenews.net. 202-628-6500.


A global shift toward obesity has serious climate consequences -- study

Ancient N.C. records show sea-level rise is related to warmer temperatures

As multiple fires shock the state, scientists wonder, what comes next?

As vote looms, report finds insurance unprepared for climate challenges

Australian archbishop criticized for denying climate science

Canadian bird populations under siege by climate change

Changing sea conditions threaten a major world food source -- U.N. report Lisa Friedman, E&E reporter

Climate change affecting Scotland's plants, agency says

Climate change and growth will strain water supplies in Wash. -- study

Climate change threatens penguins in Antarctica -- study

Climate models need to account for species interactions, researchers say

East Coast faces faster sea-level rise in a warming world

Electricity generation is 'burning our rivers,' a problem for the drought- scorched Southeast

Farmers, used to betting on the weather, adapt to a new 'game'

High Park fire follows in pine beetle's tracks

Minn. floods, early tropical storms fuel questions about changing climate

National fire threat level rises as Colo. officials seek more help to manage fire- prone forests

Number of 95 F days will quadruple in parts of Calif. -- study

Polar bear dens could be susceptible to global warming

Recognition of climate change holds strong in U.K. despite economic woes

Refugee influx, budget shortfall compound food crisis in Sahel Lisa

Satellites provide more consistent data, indicating lower CO2 emissions levels from deforestation -- study

Scientists learn how to predict El NiƱos 18 months in advance -- study

Senate poised to vote on global warming as a consideration in flood insurance

Siberian lake reveals new clues about Arctic climate

Summertime, and the living is hot and may get hotter

White House rep says adaptation is necessary but makes no new commitments


Archive