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Last modified
7/14/2009 5:02:31 PM
Creation date
5/18/2009 12:44:45 AM
Metadata
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UCREFRP
UCREFRP Catalog Number
7823
Author
Miller, W. H., et al.
Title
Colorado River Fishery Project, Part II, Final Report, Field Investigations.
USFW Year
1982.
USFW - Doc Type
\
Copyright Material
NO
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• <br />CONTENTS <br />• <br />• <br />1. GREEN RIVER FISHERY INVESTIGATIONS: 1979-1981 <br /> Page <br />INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br />General . . . . . . . . . . . . . . . . . . . . . . . . 1 <br />Setting . . . . . . . . . . . . . . . . . . . . . . . . 1 <br />Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br />METHODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br />Standardized sampling program . . . . . . . . . . . . . . . . . . 4 <br />Sampling design and procedure . . . . . . . . . . . . . . . . 6 <br />Sampling equipment . . . . . . . . . . . . . . . . . . . . . . 12 <br />Special investigations . . . . . . . . . . . . . . . . . . . . . 13 <br />Abundance and distribution of young Colorado squawfish . . . . 13 <br />Movement and habitat preferences of young Colorado <br />squawfish . . . . . . . . . . . . . . . . . . . . . . 14 <br />Radiotelemetry of Colorado squawfish . . . . . . . . . . . 15 <br />Habitat preference and taxonomy of Gila spp. . . . . . . . . . 17 <br />Data storage and retrieval . . . . . . . . . . . . . . . . . 18 <br />RESULTS AND DISCUSSION . . . . . . . . . . . . . . . . . . . 20 <br />General . . . 20 <br />Survey of the habitat and relationships of fishes . . . . . . . 20 <br />General . . . . . . . . . . . . . . . . . . . . . . . . . . 20 <br />Physicochemical description of strata . . . . . . . . . . . 21 <br />Distribution and relative abundance of all fish species 27 <br />Habitat preferences of all fish species . . . . . . . . 31 <br />Rare fishes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 <br />Colorado squawfish . . . . . . . . . . . . . . . . . . . . . . . 32 <br />Distribution and relative abundance . . . . . . . . . . . 32 <br />Migration and movement . . . . . . ... . . . . . . . . . . . 37 <br />Adults . . . . . . . . . . . . . . . . . . . . . . . . . . 37 <br />Young . . . . . . . . . . . . . . . . . . . . . . . . . . .51 <br />Habitat preferences . . . . . . . . . . . . . . . . . . . . . 54 <br />Adults . . . . . . . . . . . . . . . . . . . . . . . . . 55 <br />Juveniles . . . . . . . . . . . . . . . . . . . . . . 61 <br />Young . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 <br />Associated species . . . . . . . . . . . I . . . . . . . 68 <br />Age, growth, and mortality . . . . . . . . . . . . . . . . . . 68 <br />Spawning . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 <br />Humpback and bonytail chub . . . . . . . . . . . . . . . . . 72 <br />Distribution and relative abundance . . . . . . . . . . . . . 73 <br />Migration and movement . . . . . . . . . . . . . . . . . . 74 <br />Habitat preference . . . . . . . . . . . . . . . . . . . . . . 76 <br />Adults . . . . . . . . . . . . . . . . . . . . . . . . . . 76 <br />Juveniles . . . . . . . . . . . . . . . . . . . . . . . 80 <br />Young . . . . . . . . . . . . . . .. . . . . . . . . . . . 82 <br />Associated species . . . . . . . . . . . . . . . . . . . . . 83 <br />Taxonomy . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 <br />Spawning . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 <br />i
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