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Cover <br /> <br />I~ <br />(Table 16) <br />Native shrubs were most abundant in the Sagebrush Extended Reference Area, making up <br />32.9% of the total 57.2% vegetation cover (all hits}. Within this group, big sagebrush <br />(Seriphidium tridentatum) and mountain snowberry (Symphoricarpos rotundifolius) were most <br />common, having 17.5°Jo and 11.5% total cover, respectively. Nalive perennial forbs were the <br />second most common life form (11.3% cover), comprised by numerous species with low percent <br />cover values and lacking dominant species. Tailcup lupine (Lupinus caudatus) and weedy <br />milkvetch (Astragalus miser var. oblongifolius) had the highest percent cover values of the native <br />perennial forbs (2.4% and 1.8% respectively). Native perennial cool season grasses were the <br />third most abundant group (9.7% cover). Agassiz bluegrass (Poa agassizensis) and Montana <br />wheatgrass (Elymus lanceolatus fm. albicans) were the most abundant of this group (3.2% and <br />2.1 % respectively). <br />Total average vegetation cover, for first hits, was 51.5%. Total average vegetation cover, for all <br />hits, was 57.2%. Standing dead, litter, bare soil, and rock each had 4.7%, 31.1%, 12.5%, and <br />0.3% cover, respectively (first hits). Average species density was 25.3 species/100 sq.m. <br />Production <br />(Table 17) <br />Total average production was 656.7 Ibs/acre. Native perennial forbs and native perennial cool <br />season grasses coritributed the most with an average production of 326.5 and 314.1 Ibs/acre <br />respectively (together making up approximately 98% of the total production). <br />STEEP MOUNTAIN BRUSH EXTENDED REFERENCE AREA <br />(Photographs 37-40) <br />Cover <br />(Table 18) <br />Native shrubs were most abundant, making up 14.3% of the total 35.3% vegetation cover (all <br />hits). Within this group, big sagebrush (Seriphidium tridentatum) was most common, having 5.9% <br />total cover. Native perennial coot season grasses were the second most common life form <br />(12.8% cover). Montana wheatgrass (Elymus lanceolatus fm. albicans) had the highest percent <br />cover value of the native perennial cool season grasses (10.4%). <br />13 <br />