New Peer-Reviewed Study: Polar Bear Population Growing Despite Declining Sea Ice
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'Exciting news about polar bears in eastern Canada: the peer-reviewed paper on the Davis Strait subpopulation study has finally been published (Peacock et al. 2013). It concludes that despite sea ice having declined since the 1970s, polar bear numbers in Davis Strait have not only increased to a greater density (bears per 1,000 km2) than other seasonal-ice subpopulations (like Western Hudson Bay), but it may now have reached its ‘carrying capacity.’ This is great news. But where is the shouting from the roof-tops? This peer-reviewed paper (with its juicy details of method and analysis results), considered by some to be the only legitimate format for communicating science, was published February 19, 2013. No press release was issued that I could find and consequently, there was no news coverage. Funny, that.'
So, now we have at least two reports in the peer-reviewed literature that state flat out that the presumed negative effects of declining sea ice on a population’s size are indistinguishable from a population that is as large as it can get.
Hard to believe, isn’t it? Rather than being proven victims of Arctic sea ice in a “death spiral” due to global warming, when they finally present the data, biologists have to admit that they cannot actually tell the difference between a polar bear population that is so large that it can no longer increase and one that is suffering a population decline because of reduced sea ice.