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Table 1. Cover sampling statistical summary, New Elk mine tailings disposal area, September 1984. <br />Conifer -Shrub Oak -Shrub Reference Area <br />Mean (x) Range Mean (x) Range Mean (x) Range <br />Canopy 42.75 (27-71) 43.16 (23-64) 0.80 ( 0- 4) <br />Plant Cover <br />Graminoids <br />20.45 <br />( <br />9-27) <br />9.00 <br />( <br />0-22) <br />43.50 <br />(31-52) <br />Forbs <br />3.70 <br />( <br />0- 9) <br />2.12 <br />( <br />0- 5) <br />8.30 <br />( 3-15) <br />Shrubs <br />3.35 <br />( <br />0-10) <br />3.12 <br />( <br />0- 6) <br />1.40 <br />( 0- 5) <br />Cacti <br />0.05 <br />( <br />0- 1) <br />0.54 <br />( <br />0- 3) <br />0.40 <br />( 0- 3) <br />Total Plant Cover 27.55 (19-34) 14.79 ( 6-24) 53.60 (45-60) <br />Remainder <br />Litter <br />51.90 <br />(35-68) <br />39.50 <br />(16-53) <br />9.00 ( 0-22) <br />Total Cover <br />79.45 <br />(66-94) <br />54.29 <br />(30-68) <br />62.60 (51-83) <br />Rock <br />16.10 <br />( 2-34) <br />32.54 <br />(14-62) <br />0.60 ( 0- 3) <br />Bare Ground <br />4.45 <br />( 0-11) <br />13.17 <br />( 1-30) <br />36.80 (17-49) <br />Total <br />100.00 <br />100.00 <br />100.00 <br />Plant Cover Statistics* <br />Sample Size (n) <br />20 <br />24 <br />10 <br />Standard Deviation (a) <br />4.03 <br />3.98 <br />5.15 <br />Minimum SampleSize (nmin) <br />5.78 <br />19.51 <br />2.49 <br />(p=0.10; d=0.10) <br />Standard Error (a-) <br />x <br />0.90 <br />0.20 <br />1.62 <br />Confidence Interval (p-0.10) <br />27.55 + 1.48 <br />14.79 + 0.34 <br />53.60 ± 2.68 <br />*Computations based on Total Plant Cover <br />