OSU Researcher Documents Rare Wolverine in California
A rare wolverine has been documented in the Tahoe National Forest by a researcher from Oregon State University working with colleagues at the U.S. Forest Service’s Pacific Southwest Research Station – the first confirmed sighting of the animal in nearly three-quarters of a century.
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William J. Zielinski, a research ecologist with the Pacific Southwest Research Station, sent the image to Jeff Copeland, a noted wolverine expert with the Rocky Mountain Research Station. Copeland said he “couldn’t convert it into anything else†other than a wolverine.
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Zielinski said reports of wolverine sightings occur occasionally in California, but none of those sightings have been confirmed. The last documented occurrence of a wolverine in the state dates back to the 1920s, he said.
The North American wolverine is the largest member of the weasel family and adults can weigh as much as 40 pounds. With its bushy tail and broad head, it resembles a small bear and has a similar diet – insects, berries, small animals, birds and carrion.
Wolverines are more common in the north-central United States, including Minnesota, Michigan and North Dakota, and also can be found in Idaho, Utah, Colorado and Wyoming.
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Moriarty has been working in the Tahoe National Forest under the tutelage of Zielinski, a wildlife ecologist, and Eric Forsman, a wildlife ecologist at OSU and the U.S. Geological Survey. Both are members of Moriarty’s graduate committee.
Zielinski, who is an expert at detecting rare mammals including wolverines, lynx, marten and fishers, said the U.S. Forest Service will begin seeking more evidence of wolverines in the region. In addition to the camera array, researchers will try to collect hair and scat samples and compare them to an existing DNA database that may tell them from where the wolverine originated.
About Oregon State University: OSU is one of only two U.S. universities designated a land-, sea-, space- and sun-grant institution. OSU is also Oregon’s only university designated in the Carnegie Foundation’s top tier for research institutions, garnering more than 60 percent of the total federal and private research funding in the Oregon University System.







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