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• vas clipped. Cover data were used to calculate the Shannon-Weiner <br />Diversity Indea, ae described by Shannon, et, al. (1973). <br />Sampling vas conducted in accord with the requirements of Bule <br />4.15.8 (3). In cases where woody species dominated the vegetation <br />type, the sample size was required to attain a statistical mi++~+=m• <br />of SOZ confidence level within lOZ of the mean; where herbaceous <br />plants dominated the vegetation type, the sample size vas required <br />to attain a statistical minimum of 90Z confidence level within lOZ <br />of the mean. In all cases, adequacy of sample size vas determined <br />using the following formula (IISDI, Bureau of Land Management Manual <br />4412-Physical Besource Studies, August 10, 1979): <br />tim = t s 2 <br />Cpa~ <br />Where: Mm = Minimum number of tranaecta necessary to sample <br />within the prescribed precision and confidence; <br />t = A value from the "t" distribution table which <br />establishes the level of confidence; t = 1.282 <br />for SOZ confidence, t = 1.645 for 90X <br />confidence; <br />a = Standard deviation calculated as: <br />s = E(a - a)2 <br />~- <br />u <br />2.04-75 <br />