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stems per acre, and thus a rise of 5x in woody plant density has occurred from • the two-year old stage to the 7-year otd stage. Between 2000 and 2005, the numbers of both big sagebrush and mountain snowberry both "substantially increased as did serviceberry. Both Gambel's oak and chokecerry decreased but still are present at the rate of 20 to 40 per acre. The tall shrub species though surviving have yet to make sufficient top-growth to begin to achieve their full potential height. In the 2003 reclamation area, the 2005-observed woody plant density level of 32 stems per acre is low even for such young revegetation. Species Diversity and Composition The 1998 reclaimed area is dominated by native perennial cool season grasses and native perennial forts (twenty species present), comprising together nearly 55 percent of total vegetation cover (Figure 5). The distribution of species density by lifeform (Figure 4) shows that the 1998 and 2003 reclaimed areas are more similar to the reference areas than would appear to be the case from the lifeform distribution of relative cover (Figure 5). This is important in that it shows that the basic components of the original ecosystem have indeed been returned and that it is a matter of relative proportions that separates the reclaimed from the native vegetation. Perhaps the largest difference with regard to species density is in the native perennial forts category, where native areas (at least the most extensive native types of Mountain Brush and Sagebrush) tend to have half again to twice as many species of native perennial forts per 100 sq.m. 2005 data for total native species density in the 1998 reclamation areas was 20.8 species per 100 sq.m. in 2005, up more than 7 species per 100 sq.m. since year 2000 (13.2 species per 100 sq.m.; ESCO 2001). Sample Adequacy A summary of sample adequacy calculations.for the parameters of cover, herbaceous production, and woody plant density is presented in Table 16 16