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4 Ways Polar Bears Are Dealing With Climate Change
2015-09-04 19:12:00| Climate Ark Climate Change & Global Warming Newsfeed
National Geographic: It's a tough time to be a polar bear. The Arctic predatorswhich depend on constantly diminishing amounts of sea ice to catch marine mammals such as sealsare declining in number, and fast. There are fewer than 25,000 polar bears left in the wild, according to the nonprofit organization Polar Bears International. Near the southern Beaufort Sea (map), for instance, the population has dropped about 40 percent between 2001 to 2010, from 1,500 to 900 bears. And as their habitat shrinks, they've have...
Tags: change
ways
dealing
climate
Polar bears are in more trouble than we thought
2015-07-19 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Quartz: Polar bears have been a face of climate change for years. We`ve long understood that the melting sea ice is drastically reducing their means of foraging for seals, their main food source. We even know that pollution puts their penile bone density at risk. But now, scientists have identified another threat to polar bears: Summer ice melt. Researchers from the University of Wyoming found (paywall) that polar bears aren`t able to adapt to low food supplies by reducing their metabolisms during...
Study: Polar bear biology wont adapt to global warming
2015-07-17 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Associated Press: A study of an Alaska polar bear population in summer concludes the bears biology will not help stave off starvation in the face of global warming. The study of southern Beaufort Sea polar bears by university, federal and private researchers over three years concludes they have no special ability to minimize energy loss during increasing periods of fasting brought on by climate warming, less sea ice and fewer hunting days. The research rejects the idea that polar bears can avoid harmful declines...
Tags: study
global
bear
warming
Polar bears can't adapt melting Arctic, will waste away
2015-07-17 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
InsideClimate: Polar bears have been one of the species hit hardest by climate change over the last decade, experiencing population declines up to 40 percent in some areas. Even so, scientists have long held out hope the mammals might adapt in some way to their melting Arctic habitat and reboundor at least stabilize in numbersas the world continues to warm. But new research published Thursday in the peer-reviewed journal Science deals a blow to that optimism. Eight U.S.-based scientists tested a leading hypothesis...
Polar bear threatened: Experience limited energy savings in summer
2015-07-17 05:02:00| Climate Ark Climate Change & Global Warming Newsfeed
ScienceDaily: Polar bears are unlikely to physiologically compensate for extended food deprivation associated with the ongoing loss of sea ice, according to one-of-its-kind research conducted by University of Wyoming scientists and others, and published today in the journal Science. "We found that polar bears appear unable to meaningfully prolong their reliance on stored energy, confirming their vulnerability to lost hunting opportunities on the sea ice -- even as they surprised us by also exhibiting an unusual...
Tags: limited
experience
energy
summer
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