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Critical table (a = 0.1) = 1.307 <br />Since critical table = 1.307 (one -tailed, alpha = 0.1, 34 df) exceeds t,,, of 0.213, Alternative Species <br />Density Test B for BRB PSCM-2 Phase III in 2012 is passed (i.e. the null hypothesis of no <br />significant difference is supported). Hence, Alternative Species Density Test B is passed. <br />Regarding Alternative Test C, the similarity index between the lifeform species density values for <br />the prescribed lifeforms for 2012 BRB PSCM-2 and the Mean Species density (Area -weighted) in <br />the two reference areas is 76.0 percent (Table I-3, Report in Attachment D). This exceeds 90% <br />of the standard (0.9 x 70% = 63%). Hence Alternative Test C is passed. <br />In assessing Alternative Test D, the cumulative number of native species encountered in the <br />minimum adequate number of 100 square meter (2 m x 50 m) samples (i.e. 23, based on <br />allowable herbaceous first -hit cover) was 60. This is greater than the weighted reference area <br />average native species density of 24.7 species per 100 square meter (Table I-4 in the vegetation <br />report in Attachment D). <br />In an additional analysis, the cumulative number of native species encountered in the minimum <br />adequate number of 100 square meter (2 in x 50 m) samples (i.e. 11, based on species density <br />minus noxious weeds) was 38. This is also greater than the weighted reference area average native <br />species density (24.7 species per 100 square meter). Hence Alternative Test D is passed in <br />2012. <br />Thus, for 2012 species diversity, Mandatory Test A was passed as were Alternative Tests B, C <br />and D and hence the Phase III species diversity criteria as a whole is passed for 2012 BRB <br />PSCM-2. <br />2014 Species Diversity Success Evaluation <br />Mandatory Test A requires that no single species comprise greater than 60% relative cover in the <br />2014 BRB PSCM-2 Phase III area. Table 1-5 (Report, Attachment D) shows that the most <br />abundant single species was intermediate wheatgrass with 52.0% relative first hit cover, which is <br />below the 60% relative cover requirement. Hence Mandatory Test A is passed. <br />To assess Alternative Test B, Total Species Density test (probability -adjusted density standard), <br />the following is calculated for 2014 BRB PSCM-2 Phase III (Table I-6, Report, Attachment D): <br />