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MAMMALS <br />Pine Marten (Manes americana) Marten prefer late successional stands ofinesic, <br />conifer-dominated forest, preferably spruce-fir, but also occupy lodgepole pine, Douglas- <br />fir and occasionally cottonwood riparian azeas. This species is considered a conifer old <br />growth obligate. Marten feed on small mammals, especially red-backed voles, red <br />squirrels, some birds, insects, fruits, and berries. Dens aze key habitat components. Dens <br />maybe at considerable height from the ground in a hollow tree (often an abandoned <br />woodpecker hole) lined with grass, leaves, and mosses. They may also be on, or under, <br />the ground. Dens on the ground aze usually associated with rock piles or hollow logs; <br />therefore, snags, woody forest floor debris, brush, rock slides, and/or rock outcrops are <br />important habitat components for this species..) <br />Wolverine (Gino solo luscus) Wolverine inhabit high mountain forests of dense <br />conifer, and further north, tundra. The wolverine is very solitary. Wolverine prey upon a <br />variety of mammals, as well as scavenge for carrion and supplement their diet with roots <br />and berries. Remote areas of sufficient size to support wide-ranging individuals aze <br />important for the maintenance of viable wolverine populations. They follow their prey to <br />lower winter elevations, and their large home range and diversity in diet allow them to <br />avoid conflicts with humans. Wolverines are believed to eat mostly carrion, and aze <br />opportunistic hunters. Greatest threats to wolverine populations aze intrusions and <br />development into their habitat. Increased recreational use of habitat could have a <br />negative impact on populations. Wolverines aze very sensitive to human disturbance. <br />Riparian areas maybe important especially in winter. Big game winter ranges are <br />important sources of weakened animals or carrion. <br />Ringtail Cat (Bassariscus astutus) . Ringtails inhabit acid and semi-arid habitats <br />throughout the Southwest. Associated with rocky canyon country and foothills areas of <br />pinon juniper woodlands, montane shrublands, or mixed conifer-oakbrush. Ringtails are <br />omnivorous and their diet varies with food availability. Feeds on various small mammals <br />including deer mice, ground squirrels, woodrats, lagomorphs, and bats. Mammals, fruits, <br />and arthropods compose over 80% of diet. Mostly nocturnal and shy, and seldom <br />observed even in azeas where they aze relatively common. Dens in rock crevices, under <br />Iazge boulders, in hollow logs and trees, or in old buildings. <br />Pygmy Shrew (Microsorex Novi montanusl. Moist meadows, damp spruce/fir and <br />"` lodgepole forests, forest meadow transition azeas, sphagnum bogs. Lives under logs and <br />Nii <br />~~' roots of tree stumps. <br />Dwarf Shrew (Sorex nanus) Primarily alpine and sub-alpine azeas with rock slides and <br />talus. Low elevation sage flats and pinyon juniper aze also potential habitat. Less <br />commonly they are found at lower elevations in shrubby foothill slopes sedge marshes, <br />and dry short grass prairie habitat.. Elevational zones range from 5,500 feet to alpine <br />habitats. Also occurs in various coniferous stands. Less restricted to moist azeas than <br />other shrews <br />