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<br />' Regues! For Pgase la Bond Relense ,9r TN~enp~rnile Conl Cornpanr's Eckman Park rk ,dine l dress <br /> Table A-4 <br /> Summary of 2001 Herbaceous Production Values <br /> Empire Mine -Pasture Reference Area <br /> Density Relative <br /> Vegetative Life-form (Lbs/acre) Production <br />' Perennial Grasses 786.047 94.37% <br /> Perennial Forbs (No alfalfa) 1.499 0.18% <br /> Undesirable Perennial Forbs 0.084 0.01% <br />t Annual Forbs 40.814 4.90% <br /> Alfalfa 4.498 0.54% <br /> Total 832.942 100% <br />Density calculations were based upon [he resulting total "dry" weights. <br />Species Diversity - 2001 <br />' Analysis of the vegetative cover for life-forms present across the Pasture Reference Area <br />indicates !t is dominated by. perennial grasses (82.56 percent relative cover), followed by annual <br />forbs and alfalfa with 10.33 and 5.94 percent relative cover, respectively. Crested ~vheatgrass is <br />' the dominant perennial grass (78.52 percent). Field alyssum and Jim Hill mustard constitute the <br />greatest relative cover values among amtual forbs at 5.19 and 3.70 percent, respectively. <br />t Analysis of relative production values derived from the 2001 sample event reveal a distribution <br />of abundance by life-form similar to relative cover values. Perennial grasses dominate the area <br />with a relative production value of 94.37 percent, followed by annual forbs at 4.90 percent. <br />' Alfalfa represents 0.54 percent of the relative production on the Pasture Reference Area. <br />' The relative cover and production values for alfalfa not only describe the present condition of the <br />area, they provide insight as to the probable future condition of [he Pasture Reference Area. <br />Currently, thousands of tiny alfalfa plants are sprouting across the entire expanse of the area. <br />' This explains why alfalfa exhibits 5.94 percent relative cover but only 0.54 percent relative <br />production. The "patchy" distribution of alfalfa, combined with the small size of individuals, <br />gives the appearance that alfalfa seed was broadcast by hand on the Pasture Reference Area <br />within the last year. Alfalfa will increase across the area, both in cover and production, over the <br />foreseeable future. It is [he opinion of the vegetation ecologist who conducted the sample that <br />alfalfa will dominate this area within a few years, and that overall cover and production will <br />' 100/ Bnseline Vegem(ion Smdy -Empire Mine/995/October /8, 1001 A-7 <br />