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Press Release 11-141
Loss of Large Predators Caused Widespread Disruption of Ecosystems
Decline of "top consumers" may be humans' most pervasive influence on natural world
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Fishing alters predator patterns; when large fish are removed, corals don't fare as well.
Credit: S. A. Sandin et al. |
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Wolves are among the many "apex predators" that have been affected by human activities.
Credit: National Park Service |
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Kelp increases when sea otters are abundant; otters limit the number of kelp-eating sea urchins.
Credit: P. Dayton |
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Lake with largemouth bass (right), and experimentally removed (left); bass increase water clarity.
Credit: Steve Carpenter |
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Intertidal zone with many seastars; seastars eat blue mussels and so prevent their dominance.
Credit: D. Hart |
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Brier Creek, Oklahoma, with largemouth and spotted bass; the bass promote a healthy stream.
Credit: Mary Power |
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The researchers' work is described in the July 15, 2011 issue of the journal Science.
Credit: Copyright AAAS 2011 |
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