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species present included; foxtail barley, thickspike wheatgrass (Elymus lanceolatus fm. <br />dasystachval, sheep fescue, western wheatgrass, big bluegrass (Poa juncifolial, and fowl <br />bluegrass (Poa palustrisl. <br />Introduced annual and biennial forts provided 4.5 percent of total vegetation cover. Twolobe <br />speedwell accounted for more than two-thirds of this lifeform's cover. One-quarter was <br />provided by yellow swestclover. Salsify was the only other species providing measurable cover. <br />Bull thistle, hound's tongue, prickly lettuce, early stickseed (J~ppula redowskiil, tarweed <br />(Madia~lomeratal, knotweed (~yyonum ramosissimuml, Jim Hill mustard, and pennycress <br />were present but did not contribute measurably to total vegetation cover. Native annual and <br />biennial forts accounted for 0.4 percent of total vegetation cover. Linearleaf collomia and <br />microsteris (Microsteris gracilisl each accounted for half of this percentage. Baby blue-eyes <br />(Collinsia narvifloral and whitlowwort (Drabs spp.) were also present. <br />One inVoduced annual grass, Japanese brome, provided all of this lifeform's measured 1.3 <br />percent of total vegetation cover. Cheatgrass was also present. Native shrubs contributed 0.9 <br />percent of total vegetation cover. Three-quarters of this percentage was provided by big <br />sagebrush (S@rjphidium tridentatum). Rubber rabbitbrush accounted for the remaining <br />quarter. Saskatoon serviceberry fAmelanchier alnifolial, chokecherry (Pa us virginiana ssp. <br />melanocama), Wood's rose (Rosa woodsii), and mountain snowberry were also present. <br />Total vegetation cover averaged 61.9 percent. Standing dead, litter, bare soil, and rock cover <br />averaged 0.4, 24.7, 10.7, and 2.4 percent, respectively. Density averaged 27 species per 100 <br />sq. m. <br />Alfalfa, an introduced perennial tort, produced an average of 997.5 oven-dry pounds of biomass <br />per acre (Table 3). Together, all other life forms produced an average of 1,659.5 pounds per <br />acre. Total biomass production averaged 2,656.9 pounds per acre. <br />Native shrubs averaged 307.6 individuals per acre (Table 4). The major species, big <br />sagebrush, averaged 159 per acre. Mountain snowberry was also important. Minor species <br />included Saskatoon serviceberry, rubber rabbitbrush, chokecherry, and Wood's rose. <br /> <br />10 <br />