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i <br />• ~ All communities were sampled so that a 2096 reduction <br />in the mean production could be detected with 80~ confidence. <br />Actual probabilities reached during sampling are summarized <br />in Table 11. Production data for each quadrat is in Appendix <br />_ C. <br />I-3.5 Density <br />__ I-3.5.1 Tree Density <br />The pinyon-juniper type averaged 220.6 trees/acre (Table <br />12). The reference area had a higher tree density with 354.7 <br />__ trees/acre. Table 12 lists means, standard deviations, number <br />of samples taken and needed to meet an 80;6 level of sample <br />• adequacy and the level of adequacy attained. Adequacy was <br />~- met for the reference area ohly• The data collected for each <br />sample point is in Appendix D. <br />I-3.5.2 Shrub Density <br />"vloody plant density of individuals exceeding one inch <br />stem diameter was messured in all vegetation types and <br />reference areas. <br />For both study areas, the mountain shrub type had the <br />highest shrub density (8726.4 shrubs/acre) followed by the <br />big sagebrush type with 6819.3 shrubs/acre and the mountain <br />shrub - north facing slope with 4966 shrubs/acre (Table 13). <br />• <br />- 31 - <br />