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

TABLE OF CONTENTS
~ TABLE OF CONTENTS ..................................................... ii

LIST OF TABLES ...........................................................iii
LIST OF FIGURES ...........................................................v
ACKNOWLEDGMENTS .................................................... vii
EXECUTIVE SUMMARY ................................................... viii
~ LIST OF KEY WORDS ..................................................... viii
INTRODUCTION ............................................................1

METHODS ..................................................................1
RESULTS ...................................................................3
Species composition and relative abundance .................................. 3
Hydrograph, sampling flows, and physical habitat ............................. 8
Habitat classification ................................................... 11
~ Relationship of flows to habitat availability .................................. 14
Relationship of flows and habitat to catch of Colorado pikeminnow
and non-native cyprinids ................................................ 16
Habitat selection by Colorado pikeminnow ......... . ........................ 18
Comparison with Interagency Standardized Monitoring Program (ISMP) ......... 21
~ Comparison of Video Interpretation of habitat quantity with field measured habitat . 21
Relationship of temperature to growth and overwinter survival of
Colorado pikeminnow ...................................................23
DISCUSSION ...............................................................25

CONCLUSIONS ............................................................26
RECOMMENDATIONS ...................................................... 28
~ BIBLIOGRAPHY ...........................................................29

APPENDIX A ...............................................................49
ii