9547

• UCREFRP Catalog Number: 9547
• Author: Tyus, H. M. and J. F. S. III.
• Title: An Evaluation of Recovery Needs for Endangered Fishes in the Upper Colorado River, with Recommendations for Future Recovery Actions - Final Report.
• USFW Year: 1999.
• USFW - Doc Type: Glenwood Springs, CO.
• Copyright Material: NO

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LIST OF TABLES
Table 1. Summary of citations for direct evidence of predation by nonnatives on native
fishes in the Colorado River basin.
LIST OF FIGURES
Figure 1. Mainstream barriers and their impacts in the Colorado River basin (after Tyus
1984). Solid bars perpendicular to channel indicate location of barriers, darkened
sections of channel above barriers show impoundments, and stippling indicates extent
of downstream impact.
Figure 2. Conceptual relationship between the natural hydrograph and the timing of
~ events (M=migration, S=spawning, N=nursery, W=winter) in the life history of Colorado
pikeminnow (CS), razorback sucker (RZ), and humpback chub (HB). (After Tyus and
Karp 1989).
Figure 3. The locations of spawning habitat and areas of high density for young and
~ adult Colorado pikeminnow in the upper Colorado River.
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