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H-25 <br />H.3.3 Small Mammals <br />Rodents <br />During the study conducted on the sodium lease area, 36,000 trap <br />nights were expended and data were collected on approximately 10,000 <br />individuals (LGL 19!31). Eleven species of rodents were captured, with <br />deer mice and leasit chipmunks comprising 92 percent of the total <br />capture. Other species observed on the site include the golden-mantled <br />groundsquirrel, Apache pocket mouse, Colorado chipmunk, sagebrush vole, <br />montane vole, desert woodrat, bushy-tailed woodrat, pinyon mouse, and <br />the northern pocket gopher. Also captured were a juvenile cottontail <br />rabbit and five long-tailed weasels. <br />The three most abundant species captured were deer mice (69 percent), <br />least chipmunks i23 percent), and golden-mantled groundsquirrels (5 <br />• percent). These species occurred on all trapping grids, while most of <br />the other species occurred on less than half of the grids. Deer mice <br />was the only specie~i that was captured during every month of the year. <br />Other species were captured less frequently for several probable <br />reasons: i) because they hibernate during the colder portions of the <br />year; 2) occurred in lower densities, and 3) were less trappable than <br />the other three species. <br />The total number of individuals for all species of rodents captured was <br />the highest in the greasewood-sage bottom habitat type and lowest on <br />the sagebrush habitat type. However, the total .number of individuals <br />was inversely related to both the total number of species of rodents <br />and the rodent species diversity. Grids with high numbers of species <br />of rodents and high rodent species diversities had smaller total <br />numbers of individuals than did those with few species and low species <br />diversities. <br /> <br />THIS DOCUMENT CONTAINS TRADE SECRETS AND PRIVILEGED, CONFI DENTIAL AND kkkk ~~ <br />PROPRIETARY COMME:RCIA L, FINANCIAL, GEOLOGICAL AND GEOPHYSICAL DATA AND~nOV Z <br />INFORMATION. PU R;iUANT TO LAW, THOSE PORTIONS MARKED "CONFIDENTIAL" 6bu nn J O <br />MAY NOT BE DISCLO:iED, COPIED OR MADE AVAILABLE FOR PUBLIC INSPECTION. <br />