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• 0.9 percent cover, respectively.. Species of minor importance include <br />clasping pepperweed Lepidium pe.x~uliatum, white sweetclover Me.(i.(utun <br />a.(Ga, prostrate knotweed Pu(ygunum ovicula~e, and tumble mustard <br />SinymGaium a,Ltie~imum, <br />Succulents do not contribute to cover, but do occur in the <br />..ran. These include hedgehog cactus Bch<rtuce.xeun cf. L,xig,(uchidiatue, <br />pricklypear cactus Opun.tia cumpxenna, and brittle cactus Opunlia iC,xagiLi~. <br />Total vegetation cover is 55.6 percent. Soil and lifter <br />cover are relatively high with 17.9 and 20.5 percent, respectively, and <br />rock cover is moderate with 6.0 percent. Lichen cover is insignificant, <br />providing 0.2 percent. <br />Production <br />The esflmated total production of clipped plots in the <br />Mountain Shrubland vegetation t pe ranges from 19.8 g/2 m2 to 322.1 <br />g/2 m2 and averages 110.9 g/2 mz or 493.9 Ibs/acre. Total graminoid <br />production !including annuals! averages 61.9 g/2 m2 and to tat forb <br />production is 49.0 g/2 m2. The major graminoid producer is cheatgrass <br />brume 126.6 q/2 m21. Other important graminoid producers are Japanese <br />brume 112.5 g/2 m21, western wheatgrass Awtupy.xun .rniLhii 19,5 g/2 m21, <br />Indian ricegrass 12.4 g/2 m21, beardless bluebunch wheatgrass 12.3 g/2 m21, <br />native bluegrass (2.3 g/2 m21, and squirreltail SiLanion LonyiiCo.Llva <br />12.3 g/2 m21. Production by the annual brumes is far greater than the <br />perennial graminoid species, again emphasizing the disturbed nature of <br />this vegetation type. See Table 4. <br />Shrub and Tree Densit <br />Total shrub density for the Mountain Shrubland vegetation <br />type is 5,849 shrubs/acre. The most common shrub species is Oregon- <br />grape 11,863 shrubs/acre!. This is a low growing, creeping, stoloni- <br />ferous species which accounts for ifs high density, although this species <br />adds little to cover or production. Other major species are Gambel <br />oak 11,545 shrubs/acre) antl mountain snowberry 11,178.5 shrubs/acre!. <br />Other relatively abundant shrubs are Saskatoon serviceberry, big sage- <br />brush, fourwing saltbush, low raDbitbr ush, ana spear leaf buckwheat. <br />See Tables 5 and 6. <br />Total tree density for this vegetation type is low 131 trees/ <br />acre!. Utah juniper and Rocky Mountain juniper account for most of this <br />with 19 and 12 trees/acre, respectively. Box elder Acex negundu occurs <br />infrequently. <br />Species Diversify <br />The species diversify, or equitability, index refers to the <br />relative Similarity of cover values, or the evenness of cover distribution <br />among the species occurring in a community. The species diversify in <br />-(1- <br />