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preference by those species for scour channel backwaters. This shift in habitat availability from <br />types preferred by non-natives in part explains the strong native fish community in Westwater <br />Canyon. <br />Table .8 . Pearson correlation coefficients (PC) and associated levels of significance (p) for <br />August catch rates (fish/ m~ vs. peak flow as recorded at the State Line, Utah USGS gage <br />station; 1992 -1996. <br />Species Above Canyon Canyon <br />Fathead PC= -.88 PC= -.63 <br />minnow p = .048 p = .26 <br />Red PG- -.63 PC= -.42 <br />Shiner p = .26 p = .48 <br />Sand PC= -.49 PC= -.59 <br />Shiner p = .40 p = .29 <br />Speckled PC= .Ol PCB .42 <br />dace p = .98 p = .48 <br />Bluehead PC= .51 PC= .48 <br />sucker p = .38 p = .41 <br />Other studies have taken a critical look at the relationship between flows and non-native species <br />year class strength. The results of this study also indicate a negative correlation between non- <br />native cyprinid densities and spring flows. (see Table 8). <br />DRAFT <br />~~,-'- <br />22 <br />