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Table 2. Production sampling statistical summary, New Elk mine tailings disposal area, September 1984. <br /> Conifer-Shrub Oak-Shrub Reference Area <br /> Life-form g/m2' kg/ha #/A g/m2 kg/ha #/A g/m2 kg/ha #/A <br /> Graminoids 40.17 401.7 358.4 11.95 119.5 106.6 29.79 297.9 265.8 <br /> Forbs 7.26 72.6 64.8 3.13 31.3 27.9 9.88 98.8 88.1 <br /> Shrubs and Half-Shrubs + + + <br /> Cacti and Succulents + + + <br /> Total Herbaceous Production 47.43 474.3 423.2 15.08 150.8 134.5 39.67 396.7 353.9 <br /> Production Statistics* <br /> Sample Size (n) 50 50 50 <br /> Standard Deviation (a) 29.36 11.29 16.71 <br /> Minimum Sample Size (nmin) 74.47 (p=0.20) 93.13 (p=0.20) 48.13 (p=0.10) <br /> Standard Error (a-) 4.15 1.59 2.36 <br /> Confidence Interval (g/m2) 47.43 + 5.32 (p=0.20) 15.08 + 2.04 (p=0.20) 39.67 + 3.88 <br /> (p=0.10) <br /> *Computations based on g/m2 <br /> a <br />