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2 5 2 t 2 <br /> nmi _n Id- x <br /> where nmin = the minimum adequate number of cover transects <br /> s2 = sample variance <br /> t = a designated t-stati tic ( two-tailed test with 80% `, <br /> con i dence) v��� C C��ss il�' a� L..>06 <br /> d = desired limits of detection (0.1 or 10%) <br /> x = sample mean <br /> Collection and Analysis�of Shrub and Tree Data <br /> Shrub densities will belrecorded within a quadrat 50 m by 1 m in size. <br /> Vie will use the cover transect as the center for the quadrat which will <br /> extend 50 cm to either side. We will record the number of each shrub <br /> by species for each quadrat . 'Ne will not record data on shrub densities <br /> for the reference area. ( Per Section 4.15.7(2)(d) (iii) we wi)I let the pre- <br /> mining data form the reclamation success standard. <br /> We will use aerial photography to count all trees within the disturbed <br /> areas to be sampled. <br /> Shrub data will be anal d up the formula as presented above ( for <br /> cover) except that mean will be used in place of mean cover. <br /> Collection and Analysis' of Production Data <br /> Rectangular plots 1 m b� 2 m in size will be used for production esti- <br /> mates. The current yea 's growth of all herbaceous plants will be clipped. <br /> Major graminoid will be cut and sorted by individual species while forbs <br /> will be combined into a single category. Both annual and perennial <br /> herbaceous vegetation will be clipped. 'Ne will not clip cacti , cush•ior. <br /> plants. n_�j y�i�?d:, (shrubs, and trees. Each production plot <br /> y ire <br /> one composite sample. <br /> In the laboratory, clippings will be oven-dried at 1050C for 24 hours <br /> and weighed to the nearest tenth of a gram. Data will be recorded as <br /> grams per square meter '(g/m2) and converted to pounds per acre ( lb/ac) <br /> using the multiplier oU 8.91. Statistical adequacy requirements for <br /> production will be cal ulated using the formula above, except that mean <br /> production will be use in place of mean cover. <br /> -3- <br />