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Vegetation Cover • Total vegetation cover of the reference azea was 22.60 percent. Graminoids provided 10.80 percent mean cover (45.86% relative cover), forbs contributed 2.20 percent mean cover (8.27% relative cover), one succulent providing 0.20 percent mean and 0.75 percent relative cover was sampled, and one woody shrub was the dominant species in the community with 9.40 percent mean cover and 45.11 percent relative cover. The dominant vascular plant species of the reference area was the native woody shrub Artemisia filifolia. Artemisia filifolia accounted for 9.40 percent of the mean cover and 45.11 percent relative cover. Bouteloua gracilis provided the second highest cover with 3.60 percent mean cover and 15.79 percent relative cover. The cool season grass Stipa viridula accounted for mean cover of 2.60 percent (12.03% relative). Calamovilfa longifolia contributed 2.00 percent mean vegetation cover (7.52% relative), Chenopodium album, an annual forb, followed with 1.40 percent mean and 5.26 percent relative cover, Andropogon hallii provided 1.20 percent total cover (5.26% relative cover), and Agropyron smithii (western wheatgrass) contributed i.00 percent mean and 3.76 percent relative cover. Vegetative litter (prior year's growth, dead wood, and other biologic organic material) comprised an average 63.40 percent ground cover within the reference azea. Bare soil comprised 14.00 percent of the ground cover encountered in the reference azea. No rock or cryptogams were encountered during this yeaz's cover sampling. • Herbaceous Production Total herbaceous production at the Osgood sand reference azea was 26.28 g/mz (234 ]b/ac). Perennial grasses accounted for the majority of reference azea herbaceous production, comprising 22.39 g/m2 (199 lb/ac) or 85.2 percent of total herbaceous production. Annual grasses contributed 0.03 g/m2 (<1 lb/ac) or 0.1 percent of total herbaceous production. Annual forbs accounted for 3.85 g/m2 (34 Iblac) of the reference azea herbaceous production. Perennial forbs provided 0.01 g/m2 (<1 16/ac) of the reference azea total herbaceous production this yeaz. Species Composition I • Within the reference area four lifeforms were represented; grasses, forbs, succulents, and woody plants. The total number of species encountered during cover sampling within the reference area in 2002 was twelve. Crraminoids accounted for six species, forbs four species, succulents contnibuted one species, and one shrub species was present. Of the species encountered in the reference azea, eight were native and four were introduced. Perennial species outnumbered annual species by seven to five. Seasonality of the species was mixed, with cool season species accounting for seven species and warm season species contributing five species. Of the species encountered, seven represented greater than three percent relative cover; Artemisia filifolia (45.11%), Bouteloua gracilis Coors Energy Comparry Page 6 2002 Revegetation Monitoring Report