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WOODY PLANT DENSITY <br />"Background" Density <br />(Table A -3) <br />Total average "Background" woody plant density in BRB PSCM -1 in 2010 was 805.3 stems per acre. Big <br />sagebrush (Seriphidium tridentatum) was the densest at 574.7 stems per acre followed by mountain <br />snowberry (Symphoricarpos rotundifolius) with 217.3 stems per acre. Three other species of shrub were <br />present, each with densities of fewer than 10 stems per acre. <br />Concentration Area Density <br />(Table A- 4) <br />Total average "Concentration Area" woody plant density in BRB PSCM -1 in 2010 was 2092.2 stems per <br />acre. Big sagebrush was the densest at 1755.6 stems per acre followed by mountain snowberry with <br />215.3 stems per acre. Four other species of shrub were present, each with densities of fewer than 100 <br />stems per acre. <br />2010 Mountain Brush Reference Area <br />(Photographs 9 through 12) <br />COVER <br />(Table A -5) <br />Native shrubs were the predominant lifeform observed in the Mountain Brush Reference Area, <br />contributing 58.3 percent total first -hit vegetation cover. Of this, Gambel's oak (Quercus gambelii) <br />contributed 32.1 percent, Saskatoon serviceberry (Amelanchier alnifolia) contributed 13.4 percent, and <br />mountain snowberry contributed 8.7 percent. Native perennial cool season grasses and native perennial <br />forbs made moderate contributions to cover, with 8.9 and 2.7 percent, respectively. Also observed in the <br />area was the noxious weed hound's tongue. <br />Total average vegetation cover for first hits was 71.5 percent. Allowable first -hit herbaceous vegetation <br />cover was 12.8 percent. Cover by standing dead, litter, bare soil and rock averaged 0.7, 21.5, 6.2 and <br />0.0 percent, respectively. Average species density was 33.1 species per 100sq. m. <br />13 <br />