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cover values. Arrowleaf balsamroot (Balsamorhiza sagittata) (3.3% cover) dominated the native <br />perennialforbs. <br />Total average vegetation cover, for first hits, was 47.7%. Total average vegetation cover, for all <br />hits, was 56.8°!0. Standing dead, litter, bare soil, and rock each had 3.0°!0, 25:7%, 19.7%, and <br />3.9% cover, respectively (first hits). Average species density was 24.3 species/100 sq.m. <br />WESTERN WHEAT EXTENDED REFERENCE AREA <br />(Photographs 49-52) <br />Cover <br />(Table 12) <br />Native perennial fortis were most abundant, making up 20.9% vegetation cover (a1I hits). Within <br />this group, mule's ear (Wyethia amplexicaulis) and weedy milkvetch (Astragalus miser var. <br />oblongifolius) were most common, having 8.9% and 5.8% total cover, respectively. Native <br />perennial cool season grasses was the second most common life form (17.1% cover). Western <br />wheatgrass (Pascopyrum smithii) and Agassiz bluegrass (Poa agassizensis) were the most <br />abundant native perennial cool season grasses (4.5% and 4.3% cover, respectively). Native <br />shrubs were the third most abundant group (5.8% cover) dominated by alkali sagebrush <br />(Seriphidium arbusculum ssp. longilobum) with 3.7% cover. <br />Total average vegetation cover, for first hits, was 43.3%. Total average vegetation cover, for all <br />hits, was 44.9%. Standing dead, litter, bare soil, and rock each had 2.8%, 42.6%, 11.2%, and <br />0.1 % cover, respectively (first hits). Average species density was 21.9 speciesl100 sq.m. <br />I <br />D{SCUSS{ON <br />The year preceding sampling in July 2006 included a wet fall and winter of 2005. The spring and <br />early summer of 2006 was mostly dry, except for March 2006 which was near average (Figures <br />6a and 6b). When compared to other years in which monitoring has occurred back to 1987, both <br />the cumulative 12 months and 6 months total precipitation prior to sampling ranked 2006 near the <br />center of the nineteen years of record for April, with total precipitation amounts dropping <br />significantly by July (Figures 7a, 7b). Total precipitation for the previous six months was the <br />second lowest for the period of record back to 1987 for the month of July 2006, with only the <br />exceptional dry 2002 lower (Figure Sa, and 8b). The cumulative four month (Figure 9b) <br />precipitation values back to 1987 show that 2006 was 40% below the 19-year average. With <br />regard to temperature, cumulative January through June 2006 warmth was near average (Figure <br />10). <br />13 <br />