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Use of rat poison on illegal pot farms threatens rare carnivore

Jonathan Marker | Science Recorder | June 30, 2013

Use of rat poison on illegal pot farms threatens rare carnivore

A fisher is a rare carnivore in the southern Sierra Nevada.

According to a recent study conducted by a team of scientists from the U.S. Forest Service’s Pacific Southwest Research Station, UC Davis, UC Berkeley, and the Integral Ecology Research Center, the use of rat poison on illegal marijuana grow sites is killing fishers, a rare carnivore in the southern Sierra Nevada.

A total of 58 fisher carcasses were analyzed in the study, 79 percent of which yielded traces of rat poison in the tissues.  The full results of the study, “Anticoagulant Rodenticides on our Public and Community Lands: Spatial Distribution of Exposure and Poisoning of a Rare Forest Carnivore,” can be found at the PLOS ONE web site.

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