8158

• UCREFRP Catalog Number: 8158
• Author: Osmundson, D. B.
• Title: Longitudinal Variation in Fish Community Structure and Water Temperature in the Upper Colorado River; Final Report.
• USFW Year: 1999.
• USFW - Doc Type: Grand Junction, Colorado.
• Copyright Material: NO

LIST OF FIGURES (Continued)
12. Mean relative condition of immature, mature, and all (> 100 mm)
bluehead suckers, flannelmouth suckers, and roundtail chubs in
the Colorado River by sampling period ................................. 23
13. Overall mean diet (by volume) of bluehead suckers from the Colorado
River study area .................................................. 25
14. Overall mean diet (by volume) of flannelmouth suckers from the
Colorado River study area ........................................... 26
15. Overall mean diet (by volume) of roundtail chubs from the Colorado
River study area .................................................. 27
16. Mean diet of bluehead suckers by river segment and sampling period ........... 29
17. Mean diet of flannelmouth suckers by river segment and sampling period ........ 30
18. Mean diet of roundtail chubs by river segment and sampling period ............ 31
19. Diet by volume of Colorado pikeminnow in the Colorado River,
spring 1994 ......................................................33
20. Total annual thermal units for Colorado pikeminnow growth at seven
thermograph locations along the Colorado River study area as well as
at three Gunnison River and three Yampa River sites for comparison ........... 34
21. Catch rates (fish per mile) of adult Colorado pikeminnow in contiguous
reaches within each of three upper basin rivers ............................ 40
22. Estimated extent of contiguous habitat for the Colorado River
population of adult Colorado pikeminnow upstream of Westwater
Canyon under three management scenarios .............................. 44
Appendix Figures
1. Mean body condition of bluehead suckers by river segment and season ......... 66
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