Tailed frogs: distribution, ecology, and association with timber harvest in northeastern Oregon.

Evelyn Bull; Bernie E. Carter

doi:10.2737/PNW-RP-497

Treesearch

Tailed frogs: distribution, ecology, and association with timber harvest in northeastern Oregon.

Informally Refereed

Authors:

Evelyn Bull, Bernie E. Carter

Year:

1996

Type:

Research Paper

Station:

Pacific Northwest Research Station

DOI:

https://doi.org/10.2737/PNW-RP-497

Source:

Res. Pap. PNW-RP-497. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 11 p

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Abstract

Tailed 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.

Keywords

amphibians, Ascaphus, northeastern Oregon, tailed frog, timber harvest

Citation

Bull, 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