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<br />small Mammals <br />A variety of rodents, insectivores, bats, and skunks <br />is found within the subject areas. <br />Small mammals were trapped on three consecutive nights <br />by Dames and Moore (6-8 August 1975) using Sherman live <br />traps on C-26644 and C-26913. Four 12 x 12 grids (144 <br />Sherman live traps per grid) were placed in each rep- <br />resentative cover type, namely, aspen, mountain shrub, <br />sagebrush, and grassland. In addition to identifying, <br />weighing, and recording the reproductive statue of cap- <br />tured animals, vegetation at each grid site was sampled <br />to compare mammalian diversity with cover types. <br />Twenty-one mammal species were recorded during the study. <br />Aspen and mountain shrub types had the greatest species <br />compositions, with 13 and 14 species, respectively. <br />Eight species were identified in sagebrush habitat, and <br />only two in grassland. Mouatain shrub and aspen areas <br />appear to support a more diverse mammal fauna than do <br />sagebrush or grassland, because a greater array of micro- <br />inhabitants is associated with woodland growth-form and <br />food resource. Many ^~---=1s utilize more than one com- <br />munity. <br />All species were trapped in the aspen and mountain shrub <br />areas, but only deer mice were trapped in sagebrush and <br />meadow communities (Table 20). Since the diversity was <br />9~4 <br />