08 Jul '11, 10pm

Yellowstone's Dispersing Grizzly Bears: Alternative Explanations

In an article in the Jackson Hole News and Guide on July 6, Wyoming officials said that grizzly bears were showing up in unusual places on the periphery of the Greater Yellowstone Ecosystem, in a few cases outside known historical grizzly bear habitat . State officials used these observations of dispersing bears to make the case that there is a growing population of perhaps more than 1000 individuals. But the state failed to offer alternative explanations that are obvious and even more plausible, and that have nothing to do with increasing bear numbers. Before addressing these alternative, logical, and even compelling explanations, it is important to remember that grizzly bears are the slowest reproducing mammal in North America. Government estimates of the population last year was somewhere around 600 individuals. While Wyoming officials may not agree with these estimates...

Full article: http://switchboard.nrdc.org/blogs/lwillcox/yellowstones_d...

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