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<br /> <br />correlation (p<0.10) existed between s ecies. There did not a ear to be a flow <br />P PP <br />scenario that would benefit only native species or suppress only nonnatives. <br />S) Describe the relationship between degree-day accumulution in main channel and nursery <br />habitat areas. <br />- At Mineral Bottom, degree day accumulation of maximum daily temperatures was <br />higher in the backwaters than in the main channel. <br />- Total degree day accumulation of mean daily temperatures was higher in the main <br />channel than in the backwaters tested. <br />- Backwater temperatures were tested in large, deep areas of scour channel backwaters <br />preferred by Colorado pikeminnow. The shallower ends of these backwaters reach <br />higher temperatures than the main body of the backwater. Colorado pikeminnow could <br />migrate within a backwater to take advantage of warmer temperatures when available. <br /> <br />6) Determine the relationship between degree-day accumulation in all potential nursery habitat <br />areas and those utilized by young Colorado pikeminnow. <br />- No relationship was determined for degree-day accumulation in all nursery habitat areas <br />and those utilized by young Colorado pikeminnow. <br />- A strong relationship exists between degree day accumulation in the main channel and <br />growth of Colorado pikeminnow at Mineral Bottom. <br />- Colorado pikeminnow showed much greater growth and subsequent overwinter survival <br />in years with higher degree day accumulation. <br />- There was a significant negative correlation between the magnitude of the peak spring <br />discharge and total degree day accumulation, resulting in higher daily temperatures as <br />well as longer growing seasons in low water years. <br />7) Determine the relationship between the quantity of nursery habitats available in the summer <br />period to the number of young Colorado pikeminnow present in nursery habitats during the <br />autumn period. <br />- Neither the catch rate nor the number of Colorado pikeminnow were directly correlated <br />to total habitat availability in any season, or for all sampling occasions combined. <br />- There was a slight negative association of Colorado pikeminnow with habitat <br />availability in the summer at Mineral Bottom, and there was a positive correlation with <br />summer habitat availability and nonnative cyprinid catch rates in the fall. <br />xvii <br />