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1 <br />_~ <br />t <br />r <br /> <br />Appendix Table 10. Information necessary for calculating a Similarity <br />Index for comparing inventoried areas with reference areas.l <br />Vegetation Number of Number of Nwnber of Similarity <br />type and species in species in species in Index <br />area no. inventoried reference common <br />area area <br />Aspen <br />22 43 20 20 0.63 <br />30 43 26 26 0.75 <br />Mountain Brush <br />13 37 19 17 0.61 -~,~ <br />~~ <br /> V <br />Sagebrush <br />17 28 18 17 0.74 <br /> • ~~ <br />1S a+b where b is the number of species in the reference area, a is <br />the number of species in the inventoried area, and W is the <br />number of species in common. <br />