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• (Agropvron Cristatum) had the highest perennial species cover at 22.8 percent (96 percent <br />frequency). The remaining species generally contributed less than one half percent cover to <br />the mean total vegetative cover. <br />Herbaceous production totaled 50.03 g/m2 or 447 pounds/acre with shrubs and 47.77 g/m2 or <br />436 pounds/acre without shrubs (Table 2.04.10-31). The perennial grass component <br />contributed the highest value at 47.5 g/m (424 pounds/acre) followed by perennial shrubs at <br />1.3 g/mZ (11.2 pounds/acre). The contribution of annual grasses and perennial fortis was (1.1 <br />and 0.2 g/mZ, respectively). Actual contribution to annual production is most likely higher. In <br />order to sample the perennial species at the peak of their production, many of the earlier <br />maturing annual species were senescent or were already gone from the stand. <br />TABLE 2.04.10-30 <br />MEAN COVER (PERCENT) AND FREQUENCY VALUES <br />FOR THE DRYLAND PASTURE REFERENCE AREA (DPR) <br />NEW HORIZON 2 PERMIT EXPANSION STUDY AREA, 1999 <br />SPECIES MEAN PERCENT COVER (N=50) FREQUENCY <br />Annual Grasses <br />• Anasantha tectorum 0_2 02 <br />Total Annual Grasses 0.2 <br />Perennial Grasses <br />Agropyron Cristatum 22.8 96 <br />Bouteloua gracilis 00.4 04 <br />Total Perennial Grasses 23.2 -- <br />Shrubs <br />Ephedra viridis 0_6 04 <br />Total Shrubs 0.6 -- <br />Minimum Sample size required (nm;~)= 6 (based on total living cover) <br />• (REVISED 9/99) 2.04.10 - 87 <br />