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tremuloides) was an important component of the vegetation, contributing 23.1 percent to total all- <br />M hit vegetation cover. In general, this area had high cover values because of the prevalence of <br />shrubs and trees. Because of the existence of tree, shrubs and herbaceous layers, all-hit cover <br />data summed to a total percent cover of greater than one hundred. <br />Total average vegetation cover, for first hits, was 76.3 percent. Total average vegetation cover, <br />for all hits, was 113.4 percent. Standing dead, litter, and bare soil, each had 1.8, 12.6, and 9.3 <br />percent cover, respectively (first hits). Average species density was 38.8 species per 100 sq.m. <br />Production <br />(Table 8) <br />Total average production was 1,475.7 Ibs per acre. Native perennial forbs contributed the <br />majority to production with 831.5 Ibs per acre. Native perennial cool season grasses and <br />introduced perennial cool season grasses contributed an average production of 346.2 and 278.4 <br />Ibs per acre, respectively. Native annual and biennial forbs, introduced annual and biennial forbs <br />and introduced perennial forbs were also present, each with less than 20 pounds per acre. <br />MOUNTAIN BRUSH EXTENDED REFERENCE AREA <br />(Photographs 34-38 in Appendix 5) <br />Cover <br />(Table 9) <br />Native shrubs were most abundant, comprising 59.8 percent toward the total 97.3 percent <br />vegetation cover (all hits). Within this group, Gambel's oak (Quercus gambeli-) and mountain <br />snowberry (Symphoricarpos rotundifolius) were most common, having 36.6 and 12.7 percent <br />cover, respectively. Native perennial cool season grasses were the second most abundant group <br />contributing 23.9 percent toward total vegetation all-hit cover, dominated by Agassiz bluegrass <br />(Poa agassizensis) (13.2 percent cover) and elk sedge (Carex geyen) (5.5 percent cover). Native <br />perennial forbs were the third most abundant lifeform contributing 10.4 percent toward total <br />vegetation all-hit cover, having numerous species with low percent cover values and no dominant <br />species. James starwort (Pseudostellaria jamesiana), American vetch (Vicia americana), and <br />western yarrow (Achillea lanulosa) had the highest percent cover values of this group (1.7, 1.5, <br />and 1.4 percent, respectively). <br />Total average vegetation cover, for first hits, was 70.3 percent. Total average vegetation cover, <br />for all hits, was 97.3 percent. Standing dead, litter, bare soil, and rock each had 1.9, 16.5, 11.0, <br />and 0.3 percent cover, respectively (first hits). Average species density was 25.6 species per 100 <br />sq.m. <br />9 <br />