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Latest Polar ecology Stories

Polar Bear Diets Change Climate Change
2014-01-23 13:03:52

Lee Rannals for redOrbit.com - Your Universe Online Polar bears are able to switch up their diet in order to help them survive the warming Arctic, according to a new study. Scientists at the American Museum of Natural History performed a three-part study that shows how polar bears switch up plant and animal food sources as they face the changing climate. Arctic sea ice is beginning to melt earlier and freezing later each year, so polar bears are having a limited amount of time to hunt...

2013-08-01 08:34:07

Slight changes in the timing of the annual loss of sea-ice in polar regions could have dire consequences for polar ecosystems, by allowing a lot more sunlight to reach the sea floor. The research by scientists at UNSW and the Australian Antarctic Division predicts that biodiversity on some areas of the polar seabed could be reduced by as much as one third within decades, as the poles warm. The study, Light-driven tipping points in polar ecosystems, will be published in the journal...

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2010-01-08 09:40:00

Bears changing habitat in response to sea ice conditions A long-term study showing the changes in habitat associations of polar bears in response to sea ice conditions in the southern Beaufort Sea has implications for polar bear management in Alaska. Karyn Rode, a polar bear biologist with the U.S. Fish and Wildlife Service in Anchorage, Alaska and one of the study's authors, says data collected between 1979 and 2005 show that polar bears in the region are occurring more frequently on land...

2009-09-11 10:52:27

Much of circumpolar Arctic research focuses on the physical, direct changes resulting from climate warming such as sea ice retreat and temperature increases. "What's understudied is the living component of the Arctic and that includes humans," said Syndonia "Donie" Bret-Harte, associate professor of biology at the University of Alaska Fairbanks and co-author of a paper to be published September 11, 2009 in the journal Science. The paper reviews current knowledge on the ecological consequences...

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2009-04-07 12:20:00

In an effort to prevent further environmental damage to Antarctica, U.S. Secretary of State Hillary Clinton on Monday urged tighter controls on cruise ships and tourists in the fragile region, Reuters reported. Clinton told participants of an international meeting on both the Antarctic and the Arctic that tourism increases to Antarctica need more regulations governing travel. She said the U.S. had submitted a resolution that would place limits on landings from ships carrying large numbers of...

2008-08-30 09:00:49

By The Associated Press WASHINGTON (AP) - Five industry groups have sued the Interior Department over a rule to protect the polar bear that they say unfairly singles out business operations in Alaska for their contribution to global warming.Groups representing the oil and gas, mining, and manufacturing industries asked a federal judge Wednesday to ensure that laws designed to protect the bear, which was recently designated a threatened species, are not used to block projects that release...

2008-08-03 03:00:13

TOOLIK LAKE, Alaska _ Ground here that for tens of thousands of years was frozen solid is terra firma no more. Across the tundra and coast of the Arctic Ocean, land is caving in. Soils loosed by freshly thawed earth set off a new era of rot, and of bloom _ dumping a bonanza of nutrients into a top-of-the-world environment that swirls from months of midnight sun to deep-freeze dark. Will nature channel the nourishment of this soil into a great flowering of plant life that soaks up...

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2008-02-15 12:05:00

Frozen in time"¦ frozen in place"¦ frozen solid"¦ All of these phrases have been used to describe Antarctica, and yet they all belie the truth about this southerly point on the globe. Although the area is covered in ice and bears witness to some of the most extreme cold on the planet, this ecosystem is dynamic, not static, and change here has always been dramatic and intense. A report published in the March issue of Ecology argues that the extreme cold and environmental...