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Tailed frogs: distribution, ecology, and association with timber harvest in northeastern Oregon.Author(s): Evelyn L. Bull; Bernie E. Carter
Source: Res. Pap. PNW-RP-497. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 11 p
Publication Series: Research Paper (RP)
Station: Pacific Northwest Research Station
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DescriptionTailed frogs (Ascaphus truei) were found in 42 of 80 streams surveyed in Union, Umatilla, Wallowa, and Baker Counties in 1992. At least three size classes of larvae were identified in seven of the streams, thereby suggesting that larvae transform after spending 3 or more years in the streams. The amount of cobble and fines in the streambed best predicted abundance of larvae, whereas, cobble, boulders, slope gradient, and stream buffers best predicted abundance of adults.
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CitationBull, Evelyn L.; Carter, Bernie E. 1996. Tailed frogs: distribution, ecology, and association with timber harvest in northeastern Oregon. Res. Pap. PNW-RP-497. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 11 p
Keywordsamphibians, Ascaphus, northeastern Oregon, tailed frog, timber harvest
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