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• only fvst hit data. Because the intercept is not significantly different from 0 and the slope is not <br />significantly different from 1, the relationship is a one to one relationship. In other words, the <br />regression shows that the two types of relative cover are eyivalent. <br />3. In 1991 and 1992, would the use of first hit versus multiple hit derived relative <br />cover have impacted the study conclusions with regard to whether the vegetation satisfies <br />the species diversity success requirements? <br />The tables below compares the two relative covers for the most important plant species in <br />1991 and 1992. As is immediately obvious, no species in either year that had a multiple hit <br />relative cover between 3 and 60% was outside that range with fvst hit cover. <br />SPECIES HAVING REL. COVER BETWEEN 3% AND 60% (QUALIFYING FOR SPECIES <br />DIVERSITY STANDARD). <br /> REL % REL % LIFE <br />1991 SPECIES 1ST MULT FORM <br />LOEL/Elytrigia intermedia 35.3 34.8 Cool Season Grass <br />Eucepha[us glaucus 23.2 22.6 Perennial Forb <br />Bromopsis inermis 9.9 9.8 Cool Season Grass <br />Elymus trachycaulus 6.6 6.3 Cool Season Grass <br />Pascopyrum smithii 5.5 5.2 Cool Season Grass <br />• <br />Poa pratensis 3.7 4.2 Cool Season Grass <br /> REL % REL % LIFE <br />1992 SPECIES 1ST MULT FORM <br />Lophopyrum elongatum 43.7 42.8 Cool Season Grass <br />Eucephalus glaucus 13.5 14.4 Perennial Forb <br />Poscopyrum smithii 5.3 5.7 Cool Season Grass <br />Poa pratensis 6.4 5.5 Cool Season Grass <br />A.stragalus cicer 4.2 5.3 Perennial Forb <br />Etymus trachycaulus 4.8 4.8 Cool Season Grass <br />Melilotus ojJicinalis 4.5 4.3 Biennial Forb <br />CONCLUSIONS <br />Because the reclaimed vegetation at the Bear 1 and 2 mines is predominantly herbaceous, it <br />was expected that the difference between fvst hit and multiple hit relative cover would be <br />insignificant. Examination of 1991 and 1992 data supports this hypothesis. Extra hits were not <br />very numerous, and as a result had a negligible impact on the calculation of relative cover. 1991 <br />. and 1992 species diversity success conclusions were not affected depending on the use of one or <br />the other relative cover values. <br />B-2 <br />