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Woody Plant Density <br />As can be seen in Figure 2, the overall average woody plant density of parcels 003, <br />HG8, and E (2,751 stems per acre) well exceeded the performance standard of 750 <br />stems per acre. <br />Species Diversity <br />The species density of the reference area sampling averaged 15.3 species per 100 <br />sq.m.. 90% of this value is 13.8 species per 100 sq.m. All sampled parcels exceeded <br />this value (Table 10). It is notable that the highest species density value (23 species per <br />100 sq.m.) was observed in the Slump Area where the cover value (42 percent live <br />cover) fell short of the reference area-based performance standard of 47.1 percent (see <br />above). This underscores the (inverse) relationship between the abundance of cover <br />(and accompanying competition) and the existence of opportunities for plant diversity to <br />develop on a revegetated site. <br />REFERENCES CITED <br />Beetle, A.A. 1970. Recommended Plant Names. Univ. Wyo. Agr. Expt. Stn. Res. Journal 31, <br />Laramie. <br />Nickerson, M.F., G.E. Brink, and C. Feddema. 1976. Principle Range Plants of the Central and <br />Southern Rocky Mountains: Names and Symbols. USDA Forest Service Gen. Tech. <br />' Rept. RM-20. <br />' U.S. Soil Conservation Service (SCS). 1979. Common Plant Names List and Scientific Plant <br />Names List. Exhibit 407.1 (a)(6), National Soils Handbook Part II, USDA, Washington, D.C. <br />Weber, W.A. and R.C. Wittman. 2001. Colorado Flora: Western Slope. Third Edition. Colorado <br />Associated Univ. Press, Boulder, <br />Weber, W.A. and R.C. Wittman. 1992. Catalog of the Colorado Flora: A Biodiversity Baseline. <br />University Press of Colorado, Niwot, CO. (As amended through Dec. 1999). <br />4 <br />