9588

• UCREFRP Catalog Number: 9588
• Author: Bestgen, K. R. and e. al.
• Title: Population Status of Colorado Pikeminnow in the Green River Basin, Utah and Colorado.
• USFW Year: 2005.
• USFW - Doc Type: Fort Collins, CO.
• Copyright Material: NO

LIST OF FIGURES
Page
Figure 1. Green River Basin study area ....................................................................................... 85
Figure 2. Average daily discharge of the Green River near Jensen, Utah (gage # 09261000)
in the period 1964 to 1999, and in each of the study years 2000 to 2003 .......................... 86
Figure 3. Abundance of Colorado pikeminnow adults (> 450-mm TL) in the Yampa River,
Colorado, 2000 to 2003 ......................................................................................................87
Figure 4. Abundance of Colorado pikeminnow adults (> 450-mm TL) and recruits (400 to 449
mm TL) in the White River, Utah and Colorado, 2000 to 2003 ........................................ 88
Figure 5. Abundance of Colorado pikeminnow adults (> 450-mm TL) and recruits (400 to 449
mm TL) in the middle Green River, Utah, 2000 to 2003 .................................................. 89
Figure 6. Abundance of Colorado pikeminnow adults (> 450-mm TL) and recruits (400 to 449
nun TL) in the Desolation-Gray Canyon reach of the Green River, Utah, 2001 to
2003 ................................................................................................................................... 90
Figure 7. Abundance of Colorado pikeminnow adults (> 450-mm TL) and recruits (400 to 449
mm TL) in the lower Green River, Utah, 2001 to 2003 .................................................... 91
Figure 8. Abundance of Colorado pikeminnow adults (> 450-mm TL) and recruits (400 to 449
mm TL) in the Green River Basin, Colorado and Utah, 2000 to 2003 .............................. 92
Figure 9. Survival of Colorado pikeminnow as a function of TL (mm) in the Green River Basin
in two periods from 1991-2003 ......................................................................................... 93
Figure 10. Probability of capture of Colorado pikeminnow as a function of length for sampling
passes (only years identified) conducted in the Yampa River, Colorado, 2000 to 2003... 94
Figure 11. Transition probabilities (y/) for Colorado pikeminnow of different lengths for various
reach combinations in the Green River Basin, Utah and Colorado, 2000 to 2003 ........... 95
Figure 12. Estimated finite rate of population change (,Xi) for ISMP data collected in the Green
River Basin, Utah and Colorado, at 10 sites from 1991 to 2003 ...................................... 96
Figure 13. Interagency standardized monitoring program (ISMP) captures of sub-adult and adult
Colorado pikeminnow per hour of electrofishing effort in the Green River Basin, 1991 to
2003 ................................................................................................................................... 97
Figure 14. Length-frequency histograms for Colorado pikeminnow captured in the Yampa River,
Colorado, 2000 to 2003, during Green River Basin abundance estimation
sampling ............................................................................................................................. 98
7