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<br />I` • Shrubs averaged 3548.2 shrubs/acre in the pinyon-juniper <br />_ , <br />type. Reference areas averaged 3462.8 shrubs/acre <br />(pinyon-juniper) and 11,238.6 shrubs/acre (mountain shrub)• <br />Table 13 lists the means, standard deviations, number of <br />samples taken and needed and the level of adequacy attained• <br />The species, distance and height of each shrub recorded during <br />density measurements is listed in Appendix E. <br />I-3.6 Species Diversity <br />- The control area for the mountain shrub vegetation type <br />exhibited the highest species diversity index (5.48) followed <br />by the pinyon-juniper, big sagebrush, mountain shrub - north <br />_ facing slope, pinyon-juniper-control, and mountain shrub <br />_. with indices of 3.80, 2.98, 2.86, and 2.64, respectively <br />- (Table 14)• <br />The formula used in determining the above indices places <br />L sore emphasis distribution of species than the total number <br />of individuals in a vegetation type. This is shown by the <br />C fact that the lowest diversity index was observed in the <br />-- stratum (mountain shrub) with the highest number of species <br />` recorded (Table 14)• <br />~- I-3.7 Shrub Heights <br />Shrub height weans for all types on both study arras <br />r are listed in Table 15. The tallest shrub species for all <br />L <br />,.. <br />L <br />-35- <br />