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species. All foliage was clipped within a vertical projection of the quadrat sides <br />Project number, plot number contents, date, and wet weight were recorded on each bag. <br />Upon return from the field, clipped samples were oven-dried at 105°C for 24 hours after <br />which they were reweighed and the dry weights recorded. <br />See Appendix 10-8 for a discussion of 1985 tie across haul road production sampling <br />methodologies. <br />Density. Shrub density on sagebrush and mixed brush vegetation types within the mining <br />2 <br />area, the haul road vegetation types, and the related reference areas was measured in 4m <br />(2 m x 2 m) plots during 1980. The center point of a cove r-productivity plot represented <br />the lower left-hand corner of the shrub density plot. A shrub was defined as a <br />discernible crown from which one or more stems arose. <br />Shrub density in the Aspen affected and reference areas was sampled within 1 m x 50 m belt <br />transects located along the randomly oriented cover transects in 1983. Within these belt <br />transects, each shrub having its root crown within the boundary was counted by species and <br />the height of the first two individuals of each shrub species was measured. Trees below <br />breast height (1.3 m) also were counted by species. Shrub density data are presented as <br />number per 50 m2, number per hectare, and number per acre. <br />In 1983, tree density in the Aspen affected and reference areas was sampled using 5 m x <br />50 m belt transects or quadrats. Each quadrat had its long axis along the randomly <br />oriented cover transect line originating at a grazing exclosu re. Within each quadrat, all <br />trees greater than breast height (1.3 m) were counted by species, noted as live or dead, <br />and measured at breast height for diameter in cm. <br />Tree density data are expressed as number of stems per 250 m2, number of stems per <br />hectare, and number of stems per acre. Diameter data is presented as frequency per size <br />class. <br />See Appendix 10-8 for a discussion of 1985 ti e-across haul road density sampling <br />methodologies. <br />Livestock Carrying Capacity. The mine area herbaceous production data were used to <br />calculate cattle carrying capacity for each vegetation type. An animal unit month forage <br />• <br />C <br />• <br />12 <br />