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was thoroughly dried, the string was removed and a flat surface was cut <br />along the crore with a razor blade. The annual rings were then counted <br />with aten-power hand lens. <br />SHRUB DENSPTY ESTIMATES <br />All shrubs within 2.5 meters on each side of the 50 m shrub density belt <br />transacts were enumerated by species. Thus, each belt transact location <br />represented a shrub density sampling point 5 m wide by 50 m long, a <br />]mown area of 250 m2. The starting point of each transact was located <br />by a random method and the direction of each was also determined randomly <br />using a compass. Absolute mounts of shrubs by species were recorded for <br />each known area to obtain shrub density estimates (i.e., number of shrubs/ <br />hectare). <br />VEGETATION SPECIES O~.^'1POSITION <br />Reconnaissance type surveys were conducted within each vegetation type <br />on all affected and control areas to obtain a complete listing of <br />vegetation species for the study area. Surveys were conducted by a plant <br />taxoncenist during a minimiun of two days each month throughout the <br />gracing season (early May through August). A plant voucher collection <br />was prepared for all plant species identified during this study and has <br />been submitted to Seneca II Mine to be maintained on permanent file. As <br />additional species are verified, these will be added to the on-site <br />plant collection. For each plant collected, date, habitat, elevation <br />and associated species were recorded. Questionable plants were <br />positively identified at the Rocky tbuntain Herbarium in Taranie, <br />Wyoming or at the U.S. Forest Service Herbarium in Fort Collins, <br />Colorado. Taxonomic references consulted for plant identification <br />purposes included Hitchcock et al. (1959), Hitchcrock and Chase (1971), <br />Harrington (1954), and Dorn (1977). <br />l• <br />-14- <br />