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zbr - 0.97"f <br />Sbr (0.9 *S,,f� <br />nbr + 71 ref <br />976.1- (0.9 * 456.8) = 8.926 <br />tcatc - 808740.49 (0.81 * 39960.01) <br />35 + 31 <br />p SEa r <br />Jsat = SEbr + (0.9 * SE,.Bf f4 <br />n b r - 1 nra f - 1 <br />where: SEsat = Sbr + <br />J'nbr nref <br />808740.49 (0.01 * 399 0.01) <br />d / 4 <br />f sat — 35 + 31 = 29.08 or 30 <br />- <br />161.52' + (0.9 * 35.90)' <br />35 -1 31 -1 <br />Since critical tc = 0.854 (one - tailed, alpha = 0.2, 30 dfsat) and t,.,c (8.926) is greater than this critical value, <br />the hypothesis of no difference is rejected. Consequently revegetation success for Phase III in BRB -5 <br />relative to the Sagebrush Reference Area is demonstrated. <br />Since the herbaceous production of BRB -5 has been shown to exceed both reference areas via the <br />above hypothesis tests, revegetation success is indicated for herbaceous production in 2012. <br />WOODY PLANT DENSITY <br />Figure C -3 and C4 graphically presents the "Background" and "Concentration Area" woody plant density <br />averages for the 2012 BRB -5, respectively. As can be seen, the 210.4 stems per acre observed in the <br />Background area exceed the 90 stems per acre (90 percent of the 100 stems per acre background <br />standard) performance standard. The mean of 1,614.7 stems per acre observed in the Concentration <br />areas also well exceeds the 900 stems per acre (90 percent of the 1,000 stems per acre background <br />standard) performance standard. The total Concentration Area identified was 19.0 acres, or 7.1 % of the <br />28 <br />