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<br />Comparison with ISMP <br />~ The decreasing trend of historic CPUE was statistically significant across all years for Westwater <br />Canyon humpback chub. In addition, the difference in mean CPUE was statistically significant <br />between all years except for 1999 and 2000. The adult population point estimates indicated a <br />decreasing trend for 1998-2000. However, the point estimates for 1999 and 2000 were similar. <br />McAda (2002) statee that the marked decline in mean CPUE suggests the Black Rocks humpback <br />~ chub population has declined since 1986. This statement was further supported by a decrease in <br />CPUE in 2000 and a reflected decrease in the adult population point estimate. Thus, based upon an <br />extremely limited dataset, it appears that CPUE maybe indicative of trends in the adult humpback <br />chub population. Additional information from future sampling efforts in Westwater and Black <br />Rocks canyons will aid in further refining the relationship between CPUE and adult population point <br />~ estimates. <br /> <br /> <br />C <br /> <br /> <br /> <br />~ 12 <br />