Laserfiche WebLink
SENECA II SAGEBRUSH REFERENCE <br />COVER <br />ANNUAL DEDUCTION CALCULATION: <br />Total First Hit Vegetation Cover 71.10 <br />Noxious Weed Cover 0.07 <br />Total Minus Noxious 71.03 <br />Allowable Annual Cover Limit X 0.1 <br />Allowable Annual Cover 7.10 <br />Actual Annual Cover (w /o noxious annuals) 1.13 <br />Non - allowable Annual Cover (zero in 6.0 <br />calculations below if positive) <br />ALLOWABLE COVER CALCULATION <br />Total First Hit Vegetation Cover 71.10 <br />Noxious Weed Cover 0.07 <br />Total Minus Noxious 71.03 <br />Excess Non - allowable Annual Cover Deduction 0.0 <br />Woody Plants - Not Allowed 26.3 <br />Mean Allowable First Hit Cover 44.73 <br />Standard Deviation of Mean Allowable Cover 8.83 <br />Sample Size 15 <br />Minimum Adequate Sample Size 8 <br />Alternative Approach to Establishing the First -hit Herbaceous Cover Standard from the Seneca II <br />Mountain Brush Reference Area <br />Random sampling of the Mountain Brush Reference Area using the prescribed minimum number of <br />samples (15) establishes a reasonable estimate of the variance in the sample universe. For 2010, the <br />estimate of the mean for first -hit herbaceous cover was 12.80 and the standard deviation was 5.10 after <br />fifteen samples had been taken. With these values sample adequacy (sample size sufficient to detect a <br />10% reduction in the mean with 90% confidence) was not achieved for the Mountain Brush Reference <br />Area (minimum sample size was 29 with a sample size of 15). Were sample adequacy to have been <br />achieved at this point, we would know that the true mean lies somewhere between 11.52 (mean minus <br />10% and 14.12 (mean plus 10 %). Despite lacking sample size sufficient for the upper and lower tails of <br />the 90% confidence range to lie within this (+1- 10 %) range, we do nonetheless have 90% confidence that <br />the true mean for this population lies between 10.48 and 15.12 percent cover *. Figure 9 depicts this <br />information. <br />12 <br />