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Grizzly-polar bear hybrids in arctic


From RealClearScience: Grolar bears a result of climate change

Climate change is in part responsible for the emergence of these grolar hybrids, as polar bears that live and hunt on the ever-shrinking Arctic sea ice are forced on land during mating season in spring and summer.

At the same time, male grizzly bears are expanding their habitats, roaming into polar bear territories, and emerging from hibernation earlier in the year.

Inuit hunters have spotted grizzly bears in the Arctic for decades, but numbers are believed to have increased recently, causing males to disperse further in search of a female.The result is that where the two species meet, they mate, says Derocher. More.

Some of us think bears have been sinning for millennia but were only noticed to do so recently when puritanism could be rebranded as climate change. 😉 .

If you live in a northern region, stay the heck away from dumpsters at night.

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Some environmentalists claim hybridization means polar bears are in serious trouble: http://qz.com/692131/seeing-more-grizzly-polar-hybrids-likely-means-polar-bears-are-in-serious-trouble/ As if polar bears are meant to always be distinct from other bears. What do we know? Could the concept of "species" be so ill-defined as to be meaningless? If grizzly and polar bears can together sire reproducing hybrids, doesn't that mean they're actually the same species? If so, how does that impact the term? Edit: From the link:
These bear species aren’t supposed to mate: Polar bears and grizzlies live in different kinds of habitats, the former being more aquatic and in Arctic regions and the latter preferring forested land.
(emphasis mine) Who says? bb

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