Draft EIS_072312.pdf - Middle Fork American River Project ...

159
Species Name Status Habitat Occurrence Notes
Sierra Nevada sewellel
(mountain beaver)
(Aplodontia rufa
californica)
American marten
(Sierra marten)
(Martes americana
[sierrae])
CSC Occurs in dense riparian and open
brushy stages of most forest types.
In the Sierra Nevada, the species is
typically associated with montane
riparian habitat at higher
elevations (5,000 to 9,800 feet]).
Deep, friable soils are required for
burrowing along cool, moist
microclimates (e.g., streams and
springs).
FSS
MIS
Optimal habitats are various mixed
evergreen forests with more than
40% crown closure and large trees
and snags for den sites. The
marten is commonly found in red
fir and lodgepole pine forests
between 4,000 and 10,600 feet.
The study area is within the known geographic range
and suitable habitat is present.
CNDDB records include an occurrence east of
Duncan Peak. No species-specific relicensing surveys
were conducted for this species and it was not
documented during terrestrial visual encounter
surveys, nor were there any incidental sightings.
The study area is within the known geographic and
elevational range. While potential forest habitat for
these species is present in the vicinity of the project,
there are no documented mesocarnivore dens and no
Forest Service buffer areas near the project.
A CNDDB report (polygon) includes Duncan Creek
diversion road, located within the watershed. No
species-specific relicensing surveys were conducted
for the American marten and the species was not
documented during terrestrial visual encounter
surveys, nor were there any incidental sightings.