7769

• UCREFRP Catalog Number: 7769
• Author: McAda, C. W., J. W. Bates, J. S. Cranney, T. E. Chart, W. R. Elmblad and T. P. Nesler.
• Title: Interagency Standardized Monitoring Program
• USFW Year: 1994.
• USFW - Doc Type: Summary of Results, 1986-1992 - Final Report.
• Copyright Material: NO

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86 87 88 89 90 91 92
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86 87 88 89 90 91 92 86 87 88 89 90 91 92
Year Year
Figure 6.-Median total length (asterisks), central fifty percent of the length-frequency distribution
.(cross bars), and minimum and maximum lengths (end bars) of small Colorado squawfish collected
during fall monitoring in the Green and Colorado rivers, 1986-1992. The longest length used in
these calculations was arbitrarily selected as 70 mm. There was no clear upper length for YOY
Colorado squawfish. Relatively few fish longer than 60 mm were collected overall, but fish up to
100 mm long were collected in some years (Figure B-4).
Table 4.-Correlation (Pearson Correlation Coefficient) of mean total length of YOY Colorado
squawfish collected during fall monitoring with accumulated temperature units (sum of the difference
[positive values only] between average main channel temperature and 12, 16, and 20°C) for the four
reaches sampled during ISMP. Mean total length is presented in Table B-7 and accumulated
temperature units are presented in Table B-3.
>12°C >16°C >20°C
Reach ra P r P r- P
1 .71 .07 .81 .03 .66 .11
2 -.33 .59 -.22 .72 .O1 .99
3 .90 .O1 .90 .O1 .92 .O1
4 .73 .10 .85 .03 .85 .03
'Pearson Correlation Coefficient