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Scientists believe photograph depicts wolverine in California
Date:3/7/2008

ALBANY, Calif.U.S. Forest Service scientists believe an Oregon State University graduate student working on a cooperative project with the agencys Pacific Southwest Research station on the Tahoe National Forest has photographed a wolverine, an animal whose presence has not been confirmed in California since the 1920s.

Katie Moriarty, a wildlife biology student, was conducting research on another carnivore called the American marten when a remote-controlled camera she set photographed the animal on February 28, 2008. Forest Service scientists who are experts at detecting rare carnivores believe the photographed animal is a wolverine.

The North American wolverine is the largest member of the weasel family. Adult males weigh 26 to 40 pounds, while females are 17 to 26 pounds. It resembles a small bear, with a bushy tail and broad head. Its diet includes carrion, small animals, birds, insects and berries.

U.S. populations are found largely in the Northern Cascades in Washington, and Northern Rockies in Montana and Idaho. The nearest known resident population is about 900 miles north of the Tahoe National Forest in Northern Washington.

Attempts have been made for decades to photograph wolverines in California, according to Bill Zielinski, a Forest Service scientist with the Pacific Southwest Research Station and an expert at detecting wolverines, marten and fisher. He said periodic sightings have occurred, but never scientifically confirmed using detection methods that produce verifiable evidence.

Scientists will now conduct further detection analysis on the Tahoe National Forest using remote-controlled cameras and barbed wire snares that snag hair. They may also use dogs trained to find wolverine scat. Scientists have found dogs to be three and a half times more successful at detecting rare carnivores than remote-controlled cameras in forested areas like the Sierra Nevada Mountains.

Zielinski said hair and scat samples would con
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Contact: Roland Giller
rgiller@fs.fed.us
510-559-6327
US Forest Service, Pacific Southwest Research Station
Source:Eurekalert  

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