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• Total vegetation cover averaged 70.7 percent. Standing dead, litter, bare soil and rock cover <br />averaged 0.8, 25.1, 2.9, and 0.5 percent, respectively. Species density averaged 8.6 species <br />per 100 sq. m. <br />Alfalfa, an introduced perennial forb, averaged 636.7 oven-dry pounds of biomass production <br />per acre (Table 17). All other species averaged 2,598.2 pounds of biomass production per <br />acre. Total biomass production averaged 3,235.1 pounds per acre. <br />Shrub Density (reclaimed sites only; shrub density data were not collected at native sites) <br />Shrub density averaged 295.4 individuals per acre (Table 18). Most of these were mountain <br />snowberry; big sagebrush accounted for the remainder. <br />Mountain Brush Reference Area (Photographs 29 through 34) <br />Cover <br />Native shrubs dominated this reclamation unit with 63.7 percent of total vegetation cover <br />• (Table 19). One-third of this percentage was provided by Saskatoon serviceberry, and another <br />third was provided by Gambel's oak (Quercus yambeliil. Chokecherry, Wood's rose, silver <br />sagebrush (Seriphidium canuml, big sagebrush, and mountain snowberry provided the balance <br />of this lifeform's cover. Douglas rabbitbrush, Oregon hollygrape (Mahonia repensl, mountain <br />lover (Paxistima myrsinitesl and gooseberry (gibes inermel were also present. One native <br />tree, quaking aspen (Pooulus tremuloides), contributed 1.7 percent of total vegetation cover. <br />The most diverse lifeform, native perennial (orbs, averaged 15.6 percent of total vegetation <br />cover. Western yarrow accounted for nearly one-fifth of this lifeform's total vegetation cover. <br />Other species providing measurable cover were nettle-leaf giant hyssop, silverweed (Argentina <br />anserina), Nuttall mariposa-lily (Calochortus nuttallii), showy fleabane, goosegrass, northern <br />bedstraw (Galium sQptentrionalel, groundsmoke, sticky geranium (Geranium viscosissimum <br />var. nervosum), white-flowered peavine, tailcup lupine, wildspikenard false Solomon's seal <br />(Maianthemum amolexicaulal, horsemint, sweet cicley (Osmorhiza chilensisl, western <br />aniseroot (O~morhiza occidentalis), common yampa, northwest cinquefoil, James starwort, <br />few-flowered goldenrod, edible valerian (Y3~eriana edulis), Colorado violet (Viola <br />scopuloruml, and Pacific aster. Species present but not providing measurable cover were; <br />L <br />19 <br />