Researchers face difficulty in restoring Yellowstone ecosystem

02/6/2013 | ScienceMag.org

Researchers studying the effects of the reintroduction of wolves in Yellowstone National Park discovered that its ecosystem is more complex than they believed. Ecologists were hoping the new wolf population could help strike a balance between the elk and beaver populations while saving the shrinking willow tree population. The research, published in Proceedings of the Royal Society B: Biological Sciences, "demonstrates that it isn't just wolves and elk in that system -- it's much more complicated," said one ecologist. "There are many connections among various species ... that influence the recovery."

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