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where <br />H = the diversity index <br />Pi Ni/N <br />Ni = the importance measure for species i, and <br />N = the sum of all species importance measures <br />RESULTS <br />Mountain Shrub Pre-Mine Area <br />Herbaceous Cover. A total of 7 transects were initially taken in the <br />mountain shrub pre-mine area to document percent herbaceous cover. The <br />.mean herbaceous cover was 2.14 percent. Yariance was found to be 0.48 <br />percent. The required sample size at N80 was determined to be 4.37 <br />samples. The sample size was considered to be acceptable. <br />The summary of percent herbaceous cover for mountain shrub in the pre- <br />• mine area is shown in Table 1. <br />Shrub Density. To characterize shrub density, 7 transects were taken. <br />Mean shrub density was found to be 137.67 shrubs per 50 square meters. <br />Yariance was found to be 620.49. The required sample size at N80 was <br />determined to be 1.58. The pre-mine mountain shrub density sample size <br />was considered to be acceptable. <br />The density summary for mountain shrub in the pre-mine area is .found in <br />Table 2. ' <br />Herbaceous Production. Herbaceous production was taken on 4 transects <br />on the mountain shrub pre-mine area. Average production was found to be <br />2.25 grams per square quarter meter. Variance was found to be 0.323. <br />The required sample size at N80 was determined to be 2.62 samples. The <br />pre-mine mountain shrub production sample size was considered to be <br />~: . acceptable. <br />... 4 , , <br />" A ~ ~ 1NC. •.. , <br />