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• <br />• <br />Table 12. Sample Adequacy -Cover, Production and Shrub Density -Seneca II Mine, SCC, Routt Co., CO - 1997 <br />--------- COVER --------- -------- PRODUCTION -------- ------- SHRUB DENSITY ------- <br />Foliercover N-min•• N-min•• N-min•• <br />AREA (%1 std.dev. N• (n-11 am/0.5sa.m. std,dev. N• (n-11 A/100sq.m. std.dev. N' (n-11 <br />1990 Reclaimed 60.2 14.1 20 17 164.0 107.2 20 12B 3.9 5.5 20 595 <br />Mountain Brush Reference 84.4 6.7 10 3 54.8 41.4 25 16B NC <br />Sagebrush Reference 80.2 8.8 10 5 08.2 32.8 25 41 NC <br />Wedge Pasture 2-stage °NC ~ NC _ 5.2 l.0 15 9° <br />'N =Semple Site <br />••N-min =Minimum sample size necessary to detect a 10% reduction in the mean with 90% confidence using n-1 degrees of Ireedom. <br />'NC~= Not Collected <br />°= Standard deviation calculated based on two stage sampling procedures (see Cochran (1977), expression 10.14) <br />