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<br />' Wadge Pasture shrub density was sampled with the 50 independent random samples noted as <br />well as 45 additional samples done in association with atwo-stage sampling trial (see below). <br />All shrubs, including seedlings, with root crowns found within the quadrat boundaries were <br />tabulated by species and by life stages as follows: Seedling, Mature, or Dead. <br />Shrub Density Sampling Using Two-Stage Statistical Design in Wadge Pasture <br />For purposes of comparison of effort and results, the Wadge Pasture was separately sampled <br />again for shrub density using atwo-stage statistical design as set forth in Chapter 10 of <br />Cochran (1977). The Wadge Pasture was divided into 20 equal-sized primary sample units and <br />fifteen of these were randomly chosen to receive sampling (see Map 2, "Wadge Pasture 2-stage <br />sampling units"). Within each of the chosen primary sample units three (3) points were <br />randomly chosen in the same fashion used for single stage random sampling described above. At <br />each of these three sample points in each of the fifteen primary sample units, 2mx50m quadrats <br />were located and randomly oriented in the normal manner and shrubs were tallied as described <br />above. <br />Shrub Density - Shrub Establishment Areas <br />In seventeen (17) areas shown on Maps land 3 (15 at Seneca II and 2 at Seneca II-W), areas of <br />shrub nursery stock planting were sampled to assess the survival of the plantings. Within <br />these areas of various shapes, a prescribed number of 2mx25m quadrats were systematically <br />located (i.e. uniformly spaced) and all shrubs tallied in the normal manner. In the DSS-1 area <br />at the Seneca II-W mine, extremely high shrub seedling density made use of quadrats even as <br />large as 2x25m impractical. There, a systematic sampling using 1.0 sq. m. plots was <br />undertaken to make counts of very dense seedlings more practical. Seven transects extending <br />the length of the treatment plot were evenly spaced across the width of the treatment plot. Along <br />each of these seven transects, fifteen (15) 1.0 sq. m. plots were placed and all woody plant <br />seedlings within counted by species. <br />Total numbers of shrub density transects in each shrub establishment area were as follows: <br />• <br />5 <br />