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Title: Red tree voles in the Columbia River Gorge and Hood River basin, Oregon

Author: Forsman, Eric D.; Swingle, James K.; McDonald, Michael A.; Graham, Scott A.; Hatch, Nicholas R.;

Date: 2009

Source: Northwestern Naturalist. 90: 277-232

Publication Series: Scientific Journal (JRNL)

Description: In 2003 to 2008, we conducted surveys to document the eastern and northern range limits of red tree voles (Arborimus longicaudus) in the Columbia River Gorge and Hood River basin, Oregon. Our survey indicated the current range of the vole includes the area from Wahkeena Creek, 20 km east of Troutdale to Seneca Fouts State Park, 6 km west of Hood River. We also found a concentration of red tree vole nests in the headwaters of the Lake Branch of Hood River, 27 km southwest of the town of Hood River. Of the 70 vole nests located, 36 (52 percent) were old unoccupied nests with no evidence of recent use, 24 (34 percent) were unoccupied but had evidence of recent use as indicated by the presence of fresh green resin ducts or cuttings in the nest, and 10 (14 percent) were occupied by voles. Of the 70 vole nests, 74 percent were in forests dominated by mature or old-growth trees and 26 percent were in stands 25 to 60 years old. This survey is the first to document the existence of red tree voles in the upper Columbia River Gorge east of Cascade Locks. It also documents the occurrence of red tree voles on the east slope of the Cascade Range in the headwaters of the Lake Branch of Hood River.

Keywords: red tree vole, Arborimus longicaudus, Columbia River Gorge, Hood River, mammals, Oregon

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

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Citation:


Forsman, E.D.; Swingle, J.K.; McDonald, M.A.; Graham, S.A.; Hatch, N.R. 2009. Red tree voles in the Columbia River Gorge and Hood River basin, Oregon. Northwestern Naturalist. 90: 277-232.

 


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