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Thus, all sample sizes established to stu3y baseline vegetative wnditions <br /> at Seneca II Mine were determined by a combination of previous data, <br /> experience in similar vegetation types anti discussions with experienced <br /> parties. <br /> <br /> Both canopy cover (the percentage of the ground included in a vertical <br /> projection of imaginary polygons drawn about the total natural spread <br /> of the individual of a species) and basal cover (aggregate cross <br /> sectional area of the individual plants taken near the ground surface) <br /> wire recorded for shrubs in each Dover quadrat. Basal cover was <br /> determined for all other life forms. Data were recorded separately for <br /> each species in the quadrat as specified in Wyoming DES Guideline #2 <br /> (March, 1979). Percent litter-rock and percent bare ground were also <br /> determined for each plot. DDQ Guideline r2 (March, 1979) considers both <br /> litter and rock as a part of the ground cover. This is so that <br /> collected data will be consistent with the needs of the universal soil <br /> loss equation. All vegetation parts enc~~passed within the quadrat <br /> were included in cover estimates regardless of whether the plant was <br /> <br />C• rooted inside or outside of the quadrat (:Woming DEq Guideline #2). <br /> To facilitate estimation and recording of data at each cover quadrat, <br /> coverage was divided into six unequal classes and the representation in <br /> each class noted by a coverage class numt~r on the data sheet <br /> (Daubenmire, 1959). The midpoint of each coverage class was used in the <br /> subsequent cover data analyses as shoran below: <br /> Midpoint of <br /> Coverage Class Range of Coverage, 8 Coverage Class, <br /> 1 0-5 2.5 <br /> 2 5-25 15.0 <br /> 3 25-50 37.5 <br /> 4 50-75 62.5 <br /> 5 75-95 85.0 <br /> 6 95-100 97.5 <br />. Source: Daubenmire, 1959 <br />-8- <br />