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2011 Phase III BRB PSCM -1 <br />(Photographs 17 through 24) <br />COVER <br />(Table B -1) <br />Introduced perennial cool season grasses were the predominant lifeform observed in Area BRB PSCM -1, <br />contributing 40.1 percent total first -hit vegetation cover. Of this, intermediate wheatgrass contributed the <br />most with 31.3 percent followed by smooth brome with 6.8 percent first -hit vegetation cover. Introduced <br />perennial forbs were the second most observed lifeform contributing 10.7 percent total first -hit vegetation <br />cover, composed predominately of alfalfa (Medicago sativa). Additionally, native shrubs contributed 4.2 <br />percent first -hit vegetation cover, consisting primarily of big sagebrush and mountain snowberry. Also <br />observed in the area were the noxious weeds hound's tongue, whitetop, and Canada thistle. <br />Total average vegetation cover for first -hits was 60.1 percent. Allowable first -hit herbaceous vegetation <br />cover was 55.8 percent. Cover by standing dead, litter, bare soil and rock averaged 0.03, 29.0, 10.1, and <br />0.1 percent, respectively. Average species density was 18.8 species per 100 sq. m. <br />PRODUCTION <br />(Table B -2) <br />Total herbaceous production in 2011 was 2,815.8 pounds per acre. Of this, 2,052.0 pounds were <br />introduced perennial cool season grasses. Native perennial cool season grasses and introduced <br />perennial forbs were the only other lifeforms functioning as significant producers, contributing 390.8 and <br />319.4 pounds per acre respectively. Four other lifeforms were present, each less than 30 pounds per <br />acre. <br />15 <br />