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• Succulents do not contribute fo total cover but are repre- <br />sented in this vegetation type by hedgehog cactus and pricklypear cactus. <br />Total vegetation cover is 57.5 percent. Soil end litter <br />cover are 17.9 and 19.i percent, respectively, and rock cover is 5.i <br />percent. Total cryptogam cover is 1.9 percent, composed of 1.8 percent <br />lichens and 0.1 percent mosses. <br />Production <br />The estimated total producfion'of clipped plots in the <br />Juniper Woodland vegetation type ranges from 1.5 g/4 m2 fo 266.3 g/4 m2 <br />and averages 88.0 g/4 m2 or 196 Ibs/acre. Total graminoid production <br />)including annuals) averages only 23.3 g/4 m2, and is primarily composed <br />of cheatgrass brume 17.0 g/4 m2), Japanese brume 15.4 g/4 m21, basin <br />wildrye 42.9 g/4 m21, western wheatgrass 11.9 g/4 m21, end squirreltail <br />11.7 g/4 m21. Total forb production is 64.7 g/4 m2. See Table 8. <br />Shrub and Tree Densit <br />Total shrub density for the Juniper Woodland vegetation <br />type averages 6,304/acre. The majority of this total is composed of <br />Gambel oak 12,849 shrubs/acre), mountain snowberry 11,902 shrubs/acre), <br />and Oregon-grape 11,109 shrubs/acre). Other relatively common shrubs <br />inclutle mountain mahogany, spearleaf buckwheat, common chokecherry <br />anuau~ vixs<niarta, Saskatoon serviceberry, and Dig sagebrush. See <br />Table B. <br />Total tree density is 86/acre. The majority of this is Utah <br />juniper I71 trees/acre), with some Rocky Mountain juniper scattered <br />throughout. Tree density is low in this vegetation type, and dense <br />shrub thickets are often the dominant feature of this vegetation type. <br />See Tables 9 end 10. <br />Species Diversity <br />The species diversify index in the Juniper Woodland vegetation <br />type is only 1.02. forty-one species contribute to total cover but over <br />Half of this is from only two species. Diversify is lower in this vege- <br />tation type than in the Mountain Shrubland vegetation type because the <br />south and southwest facing habitats are more xeric. See Table 12• <br />3.3 PLANT SPECIES LIST <br />A total of 13i species of vascular plants were identified on the <br />mine site during 1901. By life form these include B trees, 24 shrubs, <br />22 perennial graminoids, 2 annual graminoids, 27 annual )orbs, and <br />3 succulents. See Table 11. <br />u <br />-10- <br />