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Table 2. Pearson correlation coefficients (r) of larval (0-20 mm long) <br />fish abundance (mean number per sample) and yearly peak flow for three <br />Grand Valley river reaches. Data collected in 1986, 1987, 1988 and 1989. <br />Means of log-transformed data were used for species maturing within their <br />first year of life and geometric means for late-maturing species. <br /> 15-Mile Reach 18-Mile Reach <br /> r P r P <br /> Native species <br />Colorado squawfishl 0.000 (-) 0.931 (.069)* <br />Roundtail chubl 0.288 (.712)ns -0.806 (.194) <br />Bluehead suckerl 0.970 (.030)** 0.884 (.116) <br />Speckled dacee 0.962 (.038)** 0.773 (.227) <br />Flannelmouth suckerl -0.013 (.987)ns 0.165 (.835)ns <br /> Introduced Species <br />White suckerl -0.111 (.889)ns 0.861 (.139) <br />Common carpi -0.804 (.196) -0.676 (.324) <br />Green sunfishl -0.499 (.501)ns -0.678 (.322) <br />Mosquitofishe -0.688 (.312) -0.831 (.169) <br />Fathead minnowe -0.842 (.158) -0.924 (.076)* <br />Sand shinere -0.790 (.210) -0.843 (.157) <br />Red shinere -0.919 (.081)* -0.952 (.048)** <br />Black crappiel 0.000 (-) 0.861 (.139) <br />ns not significant (P > .5) <br />* (P < .10) <br />** (P < .05) <br />e early-maturing <br />1 late-maturing <br />Lower Gunnison <br />r P <br />0.644 (.356) <br />0.751 (.249) <br />0.683 (.317) <br />0.986 (.014)** <br />-0.057 (.943)ns <br />0.433 (.567)ns <br />-0.564 (.436) <br />-0.564 (.436) <br />-0.586 (.414) <br />-0.962 (.038)** <br />-0.936 (.064)* <br />-0.782 (.218) <br />0.000 (-) <br />17