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RESULTS AND DISCUSSION <br /> A.RFA DESCRIPTION <br /> The Nucla wildlife study area encompasses approximately 106 acres in the <br /> southwest quarter of S25 T47N R16W approximately 3 miles northwest of Nucla, <br /> Nbntrose County, Colorado (see Map 11-1, Appendix A for study area <br /> boundaries) . <br /> Topography and Precipitation. The Nucla wildlife study area is located among <br /> flat to gently rolling farmland at an elevation of 5700 feet. Average annual <br /> precipitation at the Union Carbide Weather Station (Uravan, Colorado) near <br /> the Nucla study area for the years 1972-1979 was 10.08 inches (range of <br /> 8.03 - 12.24 inches) much of which generally occurred between July and <br /> September. <br /> Vegetation and Soils. Five major vegetation types occur on the study area: <br /> 1. Upland sagebrush <br /> 2. Grassland pasture <br /> 3. Agriculture (Alfalfa field) <br /> 4. Juniper <br /> 5. Riparian <br /> Of these five types, the agriculture and grassland vegetative types occupy <br /> 42 and 23%, respectively of the total study area not presently disturbed by <br /> rrsning operations (Marian Associates 1979) . Each vegetation type is <br /> discussed separately below. <br /> Upland sagebrush vegetation type. The upland sa;cbni-sh re,jetation type on the <br /> stuciy area comprises 6.06 acres or 5.7% of the study area. The type occurs <br /> J U N 1 1 1280 <br />