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approximately 16 percent (12 species) of the total. Grair~inoid species represented <br />26 percent (20 species) of the total. The remaining 58 percent (44 species) <br />ere forb species. No unusual, threatened, or endangered si:ecies were noted. <br />Dry Grassland Type. The dry grassland community type occurs on the drier <br />slopes and ridgetops (Figure 1). Dominant species of this community include <br />western wheatgrass (Agropyron smit3iii), actinea (Hymen.~xys richardsonii), flood's <br />phlox (Phlcs hoodii), pasture sagebrush (rte%aisia frigida) and snaketreed <br />(Cutierrezia sarothrae). In the affected area grassland, the total vegetation <br />cover was 8.9 percent. Western wheatgrass contributed 30 percent of that cover <br />(Table 2). Hood's phloem and actinea contributed 16 and 15 percent of the total <br />cover respectively. <br />In the reference area dry grassland the total vegetation cover was <br />greater with 13.5 percent (Table 3). Eighteen percent of that total was <br />~~estern wheatgrass. Actinea and snakeo-reed each contributed 14 a^d ll percent <br />of the total respectively. Other important species included nai7wort (Paronyehia <br />sessiLliflora}, Hood's phlox, threadleaf sedge (Carer fiZifoLia), and needle- <br />and-thread grass (Stipa comata). Bare soil accounted for 79.0 percent of the <br />ground layer. Litter and lichen contributed 10.2 and 12.4 percent respectively. <br />Total production for the affected dry grassland was 14.22 grams per square <br />meter (Table 4). Grasses accounted for 65 percent of the total biomass with <br />9.30 grams per square meter. Western wheatgrass was the most productive <br />species with 6.47 grams per square meter. Semi-shrubs accounted for 20 percent <br />(2.81 g/mz) of the total biomass and perennial forbs accounted for 14 percent <br />(1.99 g/m2) of the total biomass. <br />In the dry grassland reference area the total production was 20.42 <br />rams per square meter (Table 5). Perennial grasses accounted for 52 percent of <br />~he total biomass with 10.60 grams per square meter. Western wheatgrass was <br />the most productive species with 3.63 grams per square meter. Perennial forbs <br />with 4.06 grams per square meter and semi-shrubs vrith 4.03 grams per square <br />7 <br />