Distribution and Conservation Of Plethodon Salamanders On Federal Lands In Siskiyou County, California
2008
Nauman, Richard S. | Olson, Deanna H.
The Northwest Forest Plan is a large-scale ecosystem management plan that establishes a system of federal reserves interspersed with matrix forestlands where timber and other commodity production are given priority. Generally, management on reserved lands attempts to protect species associated with older forests. Whereas management in matrix lands emphasizes timber production, it maintains some protections for species associated with older forests. We conducted surveys at randomly selected points within the range of the Scott Bar Salamander (Plethodon asupak) and the southern portion of the range of the Siskiyou Mountains Salamander (P. stormi). We conducted surveys on both reserved and matrix lands to assess the relative role that these allocations play in the long-term persistence of Plethodon salamanders in this region. At low elevations (<1219 m), the proportion of sample points with captures of Plethodon spp. was significantly higher in matrix lands than on reserved lands. However, the number of Plethodon spp. captured at matrix and reserved land points was similar. Matrix land mitigations may be essential to provide protection for salamanders with small ranges and limited dispersal abilities. Oregon Ensatina (Ensatina eschscholtzii), the 2nd most commonly encountered amphibian, was more evenly distributed across the landscape than Plethodon spp. and was not associated with either reserved nor matrix lands.
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