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DRAFT23 <br />~'.~' ? <br />~~ <br />negatively correlated with habitat availability and Colorado squawfish catch rates. Non-native <br />cyprinid catch rates and associations with peak flow and habitat availability were not discussed in <br />~ ~~ <br />the draft report. ~ ~''~ <br />! died. <br />results from each~reacl~were highly correlated with one another. results from the Colorado River <br />? „~,~ ~~,.sH-~s ~ ~[ Ito f a~ ~.(~-~ <br />eako~d een I;iver results, althou h lPC ~on~,vely. Peak flows were negatively correlated <br />~ p.u~rA~Sn~.~ 1lrr..~~ ~~G <br />Pwith habitat availability and with,aea-wive catch rates, but not significantly. Sampling flows <br />were negatively correlated with habitat availability but none approached significance except the <br />relationship between fall flows and fall habitat. Colorado squawfish catch rates were not <br />significantly correlated to any variable, although negative associations exist with non-native catch <br />rates. Non-native catch rates were not closely correlated with habitat variables. The high <br />correlation found in the Green River between NNC catch rates and habitat availability was non- <br />existent in the Colorado River. The Colorado River results are somewhat skewed by the <br />extremely high catch rates of Colorado squawfish in 1996. The other four yeazs of the study had <br />much lower catch rates. <br />Validation of ISMP <br />The ISMP guidelines call for sampling in backwaters that are at least 1 foot deep, 30 m2, <br />2 degrees warmer than the main channel, and turbid, based on previous studies that suggested <br />YOY Colorado squawfish would be concentrated in these "quality" habitats. The nursery habitat <br />study has validated this assumption by establishing significant relationships with catch of YOY <br />squawfish and habitats greater than .3m maximum depth, and with SC habitats, which aze <br />-23- <br />