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Table 22 -2 <br />Mean Cover (Percent) And Frequency Values <br />For The Dryland Pasture Reference Area (DPR) <br />1999 <br />SPECIES <br />Annual Grasses <br />Anasantha tectorum <br />Total Annual Grasses <br />Perennial Grasses <br />Agropyron cristatum <br />Bouteloua gracilis <br />Total Perennial Grasses <br />Shrubs <br />Ephedra vindis <br />Total Shrubs <br />MEAN PERCENT COVER (N =50) <br />0_2 <br />0.2 <br />22.8 <br />00.4 <br />23.2 <br />0_6 <br />0.6 <br />FREQUENCY <br />02 <br />96 <br />04 <br />04 <br />Minimum Sample size required (n, 6 (based on total living cover) <br />The previous cover standard for dryland pasture was 90% of the sagebrush reference <br />area. The previous cover standard for vegetation Sampling Area 1 -A and 1 -B included all <br />live vegetation plus litter and was set at 90% of 43.9% cover. See Table 1 of Appendix <br />22 -1. Careful examination of the data shows that most of the cover is litter (31.2 %) <br />leaving total live cover of only 12.7 %. <br />Unfortunately, in early 2000, WFC discovered that heavy cattle grazing had been allowed <br />to occur on the original dryland reference area west of the airport and that there was no <br />guarantee that heavy grazing could be prevented from occurring again in the foreseeable <br />future. <br />REVISED 11 Nov 09 Tab 22 -17 <br />