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As super-predators, humans reshape their prey at super-natural speeds
Date:1/12/2009

hich take far less and target smaller individuals." Commercial fisheries often take half a given population per year; by contrast, competing natural predators might take only 10 percent of a population, he added.

However, more conservation-oriented policies would be no guarantee: "It's unknown how quickly the traits can change back, or if they will," noted Darimont, adding that consumers can also play a role by reducing the demand for seafood.

Finally, the results also sound an alarm about the viability of commercial industries. "By causing such abrupt and significant changes to their targets, many industries are harvesting away their future bounties," he said.


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Contact: Jennifer McNulty
jmcnulty@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

Page: 1 2 3 4

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