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-32- REVised OC7 3 0 1981 <br />• The upland sagebrush reference area occupies 2.73 acres in an area south <br />of current and future mining operations (A7ap entitled "Vegetation Types", <br />Arrmpnraix A). Nineteen species were represented in cover samples for a diver- <br />sity index of 2.16. <br />Total mover for the upland sagebrush reference area was estimated to be <br />79.68. Of this total, vegetation basal cover accrounted for 17.5. Litter- <br />rock and bare ground conq~rised 25.3 and 40.48 of the total cover, respectively. <br />Grasses, primarily orchardgrass (Dactylis glomerata) and tall fescue (Festuca <br />elator) contributed 56.8;; of the total vegetative wver in the upland sage- <br />brush referollce area. The forbs and shrubs contributed 1.9 and 3.6$ basal <br />cover, ra9ix?ctively, although canopy cover for the shrubs (i.e., big sagebrush <br />and four-wing saltbush) totaled 13.48. The most Damon forb encountered was <br />stickseed. Broom snakeweed, a sub-shrub, plains pricklypear (Opuntia pol can- <br />tha), a succulent, and two bryophyte species also contributed to total vege- <br />tation Doves. <br />• Density of big sagebrush on the upland sagebrush control was 2210 shrubs/ha <br />followed by four-wing saltbush at 53 shrubs/ha and rubber rabbitbrusn at 6 <br />shrubs/ha. Shrub height for big sagebrush was 23.9 an (9.4 inches). This <br />implies a lower growing shrub stratum than that present on the affected area. <br />Total production on the upland sagebrush reference area was 841.3 lbs/acre. <br />Big sagebrush contributed 81.8 to the total production. The grass-forb <br />stratum contributed 9.5~ and 8.4~, respectively. Average percent moisture <br />was 39.38 for grasses aryl 45.18 for forbs. <br />C~ <br />