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mustard comprised nearly one-quarter while bull thistle, hound's tongue, yellow sweetclover, •
<br />i pennycress, and salsify were minor contributors. Burning-bush (B~as~i~ sieversiana), aarly
<br />stickseed, tarweed, white sweetclover ( lil ~), Russian thistle, and mullein
<br />i (Verbascum Ihapsus) were present. Linearleaf collomia, a native annual forb, averaged 0.2
<br />percent of total vegetation cover. Western rockjasmine (Androsace occi lis), tumbling
<br />saltbush, oakleaf goosefoot, Richardson tansymustard, dragonhead (Dracoceohalum
<br />parviflorum), and denseflower pepperweed (L i~ ilium densiflorum) were present. Introduced
<br />perennial (orbs averaged 16.6 percent of total vegetation cover. Alfalfa, Canada thistle, and
<br />titer milkvetch each accounted for roughly one-third of this percentage. Dandelion was also
<br />~ present. Native perennial (orbs averaged 8.1 percent of total vegetation cover and were the
<br />most diverse lifeform. American vetch accounted for nearly one-third of this lifeform's cover.
<br />Together, blueflax, showy goldeneye, and Pacific aster contributed an additional third.
<br />Groundsmoke, gumweed, horsemint ( Hard is ulos var. menthifolia), Rocky Mountain
<br />penstemon, and James starwort provided the balance. Western yarrow, nettle-leaf giant
<br />hyssop, pasture sage, arrowleaf balsamroot, Eaton thistle, marsh-elder (!,vclachaena
<br />xanthifolia), showy fleabane, white-flowered peavine, mountain bluebellaa, false dandelion
<br />(Nothocalais cuspidata), wild tarragon, common yampa, varileaf scorpior~weed ( Celia
<br />i heterophylla), and figwort (Scrophularia lanceolata) were also present. Saskatoon •
<br />serviceberry and big sagebrush, native shrubs, each contributed half of this lifeform's 0.4
<br />percent of total vegetation cover. Utah serviceberry (Amelanchier utah~~,nsis), rubber
<br />i rabbitbrush, chokecherry, bitterbrush, and mountain snowberry were present.
<br />Total vegetation cover averaged 46.9 percent while standing dead, litter, bare soil, and rock
<br />cover averaged 1.2, 33.9, 14.7, 3.3 percent, respectively. Species density averaged 32.8
<br />species per 100 sq. m.
<br />i
<br />Production
<br />Alfalfa averaged 144.5 pounds of biomass production per acre while all other vegetation
<br />averaged 1,830.2 pounds per acre (Table 8). Total biomass production averaged 1,975.3
<br />pounds per acre.
<br />Native shrubs averaged 250.9 individuals per acre (Table 9). Chokecherry and big sagebrush
<br />each accounted for roughly one-third of these white Saskatoon serviceberry provided just under
<br />14 •
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