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• Fach point randomly located by this technique on the aerial photograph <br />was located in the field by pacing from recognizable ran~rks. All <br />randanly located sample points were marked with a wooden stake which <br />identified the sample number and vegetation type. All points were flagged <br />above the vegetation to allow easy relocation. One cover quadrat and <br />one pzoduction exclosure were situated at each random point. Cover quad- <br />rats were placed irl a consistent *~*+*+Ar with one corner touching the <br />southside of the sample location stake. Production exclosures were situated <br />5sn north of each sample location stake. This technique ensured the unbiased <br />positioning of both Dover quadrats and production exclosures around the <br />randomly located sample point. <br />Sample site location in the mixed brush type/aspen subtype and upland <br />sagebrush adjacent undisturbed areas is described in detail in the <br />vegetation baseline report (Mariah Associates, 1980) and was identical <br />th the teclrrsique used in the revegetation plot. <br />• VEC~'fATIUN, OO~IE:R AND FFZF7QUII~CY FSTII~IIITFS <br />Cover was estimated using a 20x50 an steel frame quadrat (1/lOm2) at each <br />of the randomly located points in each vegetation type. A total of 100 <br />quadrats were sampled for cover during this study. Both canopy Dover <br />(the percentage of the ground included in a vertical projection of <br />imaginary polygons drawn about the total natural spread of the individuals <br />of a species) and basal cover (aggregate cross sectional area of the <br />individual plants taken near the ground surface) were recorded for all <br />species in the quadrat. Data were recorded separately for each species <br />in the quadrat. Percent litter-rock and percent bare ground were also <br />determined for each plot; these estimates were based on the type aryl <br />percent Of ground rover mini ~ after total vegetation basal cover <br />was detern~ined. Rb faci.litate estimation and recording of data at each <br />rover quadrat, coverage was divided into six unequal classes and the repre- <br />sentation in each class rated by appropriate OovPSage class nurtber on the <br />• data sheet (Daubeianire, 1959). The midpoint of each coverage class was <br />-5- <br />