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Table 5. <br />~~~ <br />Comparison between sampling periods of backwater characteristics showing statistically significant differencesa (p < <br />0.05) between chub use habitats and non-use habitats in Desolation and Gray canons of the Green River, Utah: 1994- <br />1996. Values shown are chub use vs non-use (e.g. `>' indicates the mean of the subject characteristic for chub use <br />habitats is greater than that for non-use habitats.) <br />Variable measured pool <br />(mZ) > <br />h (m) > <br />i depth (m)b > <br />neb > <br />mean widthb > <br />main channel temperature (° C) >d <br />mean backwater temperature (° C)b <br />difference in temperature between main channel and backwater <br />main channel turbidity° <br />backwater turbidity° (at mouth / at 1/s / at 2/s) >/>/> <br />percent cover (surficial and submeraedl <br />June ~ July ~ August ~ Sel <br />> ~ <br />< > <br /> > > <br />> > > <br /> > > <br /> > > < <br />> > < <br /> <br />> > <br /> <br />a Wilcoxon signed-rank test <br />b some or all individual measures contributing to calculation of the mean were also significantly different <br />° chi-square analysis of categorical data <br />a pooled value may not be descriptive as temperature varies seasonally <br />° chub use backwaters have significantly higher incidence of the median turbidity classification and significantly lower incidence of <br />the low and high turbidity classifications <br />17 <br />