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• The small aspen groves on the Seneca II mine site are basically a <br />subtype within the mixed brush oommmity. ('pna~,ontly, all aspen areas <br />sampled supported a vegetation understoxy similaz to that of the mixed <br />brush type. Also, total vegetation production and Dover for the aspen <br />closely approximated that of the mixed brush type. Shrub heights in the <br />aspen vegetation type averaged 143.6 an (Mariah Associates, 1980). <br />Upland sagebrush vegetation type. The upland sagebrush vegetation type <br />within the study area occ~aies 358.5 acres or 13.28 of the total <br />undistrubed lands in the study area (Mariah Associates, 1980). it <br />occurs mainly on well-drained soils found on the southwestern section <br />of the permit area. Scattered patches of sagebrush stands also occur <br />within the mixed brush type throughout the southern edge of the study <br />area at the lacer elevations. The type is characterized by relatively <br />homx3eneous stands of Hasin big sagebrush. Snowberry and Douglas rabbit- <br />brush (Chrysothanmus viscidiflorus) species may be locally ocanron in <br />some areas of this type. <br />CAmiDn upland sagebrush underst~ry species included: bluebimch wheatgrass <br />(Agropyron spicatum), Letterman needlegrass (S~ lettprminii), arrowleaf <br />balsamroot (Ba.lsamorhiza sagittata), and irnileseaz wyethia ( ethic a~lexi- <br />caulis). Total vegetation basal Dover on the upland sagebrush vegetation <br />type was 22.38 and wRds dcaninated by the grass and forb stz'ata (34.5 and <br />47.58, respectively) (Mariah Associates, 1980). <br />Total 1979 production on the upland sagebrush site was 1103.3 lbs/acre. <br />Approximately 578 of the total production was contributed by the shrub <br />strata while the forb and grass strata ~ntributed 32.0 and 11.08, <br />respectively. Shrub heights at the upland sagebrush site averaged <br />50.7an fMar;ah Associates, 1980). <br />WIIDLIFE <br />Data gathered during 1979-1980 wildlife studies at Seneca II Mine and <br />site specific information found in the literature are discussed by major <br />wildlife oa~onent below. A list of vertebrate species positively <br />-21- <br />