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• Total average vegetation cover for first hits was 46 percent For herbaceous vegetation, total <br />average cover for first hits was 42 percent. Cover by standing dead, litter, bare soil and rock <br />averaged 0.6, 39, 14 and 1 percent, respectively. Average species density was 21 species per <br />100sq. m. <br />PRODUCTION <br />(Table 5) <br />Total herbaceous production in 2005 was 3,085 pounds per acre. Of this, 2,514 pounds were <br />Introduced perennial cool season grasses. Introduced perennial forts and native perennial cool <br />season grasses were moderate producers, contributing 291and 152 pounds per acre, <br />respectively. <br />Woodv Plant Density <br />(Table 6) <br />Total average woody plant density in 2005 Bond Release Block 2 was 457 stems per acre. Big <br />sagebrush (Seriphidium tridentatum) was the densest at 314 stems per acre followed by <br />mountain snowberry (Symphoricagws rotundifolius) at 124 stems per acre. Three other species <br />of shrub were present: Douglas rabbitbrush (Chrysothamnus viscidrflorus), rubber rabbitbrush <br />(Chrysothamnus nauseosus), and Gambel oak (Querous gambeli~). Each of these had densities <br />of fewer than 100 stems per acre. <br />Bond Release Block (BRB) 3 <br />(Photographs 9-12) <br />COVER <br />(Table 7) <br />Introduced perennial cool season grasses were the predominant lifeform observed in Bond <br />Release Block 3, contributing 28 percent toward total first-hit vegetation cover. Of this, 19 percent <br />was intermediate wheatgrass (Thinopyrum intermedium) and 7 percent was smooth brome <br />(Bromopsis inermis). Introduced perennial forts contributed 16 percent toward total first-hit <br />vegetation cover. This total was predominantly composed of alfalfa (Medicago saliva) (9 percent) <br />and cicer milkvetch (Astragalus cicer) (7 percent). Additionally, native perennial cool season <br />16 <br />