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Table of Contents <br />PREFACE .................................................................... i <br />INTRODUCTION ............................................................... 4 <br />Environmental Setting ................................................... 4 <br />Green River Basin Fishes ................................................ 5 <br />FLAMING GORGE STUDIES ...................................................... 7 <br />Background .............................................................. 7 <br />Study Abstracts ......................................................... 8 <br />Study 1: Summer and fall requirements of age-0 Colorado <br />squawfish in the Green River.. .... ................. ...... 8 <br />Study 2: Winter habitat and flows for adult and young Colorado <br />squawfish and adult razorback sucker ............. ... ..... 9 <br />Study 3: Spring and early summer flow requirements of Colorado <br />squawfish, razorback sucker, and humpback chub ................ 9 <br />Study 4: Fish community interactions of endangered and introduced <br />fishes...... ................... .......................... 12 <br />Study 5: Trophic dynamics and ecological interactions in important <br />backwater habitats .................................... ....... 14 <br />Study 6: Mapping of important backwater habitats of Colorado <br />squawfish ..................................................... 15 <br />HABITAT USE AND STREAMFLOW NEEDS OF COLORADO SQUAWFISH, HUMPBACK <br />CHUB, AND RAZORBACK SUCKER ............................................. 15 <br />Colorado squawfish ..................................................... 16 <br />Adult .............................................................. 16 <br />Migration .......................................................... 17 <br />Spawning...... ................................................... 18 <br />Larvae and postiarvae .............................................. 19 <br />Juveniles .......................................................... 21 <br />Humpback Chub .......................................................... 22 <br />Bonytail Chub .......................................................... 24 <br />Razorback Sucker ....................................................... 24 <br />SUMMARY .................................................................... 26 <br />General ................................................................ 26 <br />Spring ................................................................. 28 <br />Summer... ............................................................ 29 <br />Autumn and Winter ...................................................... 30 <br />RECOMMENDATIONS ............................................................ 31 <br />Flow and Temperature ............................................... 31 <br />2 <br />