8160

• UCREFRP Catalog Number: 8160
• Author: Trammell, M. and T. Chart.
• Title: Aspinall Studies
• USFW Year: 1999.
• USFW - Doc Type: Evaluation of Nursery Habitat Availability and Colorado Pikeminnow Young of Year Habitat Use, in the Colorado River, Utah, 1992-1996\
• Copyright Material: NO

LIST OF FIGURES (continued)
~ Figure 12. Relationship of total habitat azea to mean catch rate ofnon-native cyprinid
(CPE in #fish/100 mZ) in summer, fall and spring. Upper and lower nursery
habitat sections, Colorado River, 1992-1996 ............................ 42
Figure 13. Colorado pikeminnow mean catch rates (CPE in #fish/100 mZ) in five habitat
~ types. Flooded Tributary (FT), Horseshoe vortex (HS), Migratory Sandwave
(MS), Scour Channel (SC) and Shoreline Eddy (SE). Colorado River nursery
habitat, Upper and lower sections, 1992-1996 ........................... 43
Figure 14. Habitat use ofnon-native cyprinids in each of five habitat types. Flooded
~ Tributary (FT), Horseshoe vortex (HS), Migratory Sandwave (MS), Scour
Channel (SCj and Shoreline Eddy (SE). Colorado River nursery habitat,
Upper and lower sections, 1992-1996 . . ............................... 44
Figure 15. Comparison of Colorado pikeminnow catch rates (CPE in #fish/100 m2) for
Interagency Standazdized Monitoring Program (ISMP) and Colorado River
nursery habitat (NH), 1992-1996 ..................................... 45

Figure 16. Average total length (mm) of Colorado pikeminnow in the summer, spring and
fall, 1992-1997.Colorado River nursery habitat ......................... 46
Figure 17. Length frequency histogram of total length (mm) of Colorado pikeminnow,
Colorado River nursery habitat, Upper and lower sections, 1992-1996 ....... 47
Figure 18. Relationship of total length of Colorado pikeminnow to overwinter survival
~ based on the percent change in catch rates between fall and spring. Colorado
River nursery habitat, Upper and lower sections, 1992-1996 ............... 48

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