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When polar bears go up against grizzlies, polar bears lose

As two species driven together by climate change, grizzlies will likely win out


 

As climate change pushes polar bears and grizzly bears into competition for food, increasingly requiring them to share a habitat, polar bears will probably lose out, according to a new study from evolutionary biologists at the University of California, Los Angeles. Using 3D computer modeling, researchers compared the skull and jaw strength of the two bear species and found polar bears aren’t suited to the tougher chewing demands of the mostly vegetarian diet that grizzlies observe. “This is one additional piece of evidence that things look pretty bleak for the polar bear, if current trends continue,” lead author Graham Slater told Reuters. Grizzlies, a subspecies of brown bears, are moving north in Canada as their habitat warms up, and polar bears are moving south as the ice melts. But the territory they’re finding themselves in is more suited to the grizzly.

Reuters


 
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When polar bears go up against grizzlies, polar bears lose

  1. A cage match between a Polar bear and an African Lion – who would win that match is the great philosophical question.

    Climate Change fraud is the gift that keeps on giving for 'scientific researchers', they can make this speculation this year, and get more money next year to say the opposite.

  2. A cage match between a Polar bear and an African Lion – who would win that match is the great philosophical question.

    Climate Change fraud is the gift that keeps on giving for 'scientific researchers', they can make this speculation this year, and get more money next year to say the opposite.

  3. Oh, please, Macleans … do spare us these computer generated silly scary poor bear stories.

    Until one of these brilliant "scientists" is able to empirically demonstrate that whatever might – or might not – be occurring is a function of "nurture" (in this case human generated C02) rather than "nature" (doing what nature has done since time immemorial), then these adapted press releases are a waste of bandwidth.

    If you're concerned about the environment (and really, who isn't?!) why not tell the story of someone who is actually making a difference by doing something that matters …. try:
    http://hro001.wordpress.com/2010/11/21/support-el

  4. Oh, please, Macleans … do spare us these computer generated silly scary poor bear stories.

    Until one of these brilliant "scientists" is able to empirically demonstrate that whatever might – or might not – be occurring is a function of "nurture" (in this case human generated C02) rather than "nature" (doing what nature has done since time immemorial), then these adapted press releases are a waste of bandwidth.

    If you're concerned about the environment (and really, who isn't?!) why not tell the story of someone who is actually making a difference by doing something that matters …. try:
    http://hro001.wordpress.com/2010/11/21/support-el

  5. I know how I can make some extra money these days…

    …request a research grant that starts with "due to climate change, what will happen when…"

    Suggestions for future computer model studies:

    arctic fox vs southern fox
    arctic hare vs regular hare
    muskox vs jersey cow
    tundra wolf vs timber wolf
    lemming vs mainstream scientist (stalemate)

  6. I know how I can make some extra money these days…

    …request a research grant that starts with "due to climate change, what will happen when…"

    Suggestions for future computer model studies:

    arctic fox vs southern fox
    arctic hare vs regular hare
    muskox vs jersey cow
    tundra wolf vs timber wolf
    lemming vs mainstream scientist (stalemate)

  7. Especially "grizzlies" with two legs and guns.

  8. Especially "grizzlies" with two legs and guns.

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