9301

• UCREFRP Catalog Number: 9301
• Author: Wydoski, R. S.
• Title: Green River Fishes and Invertebrates.
• USFW Year: 1967.
• USFW - Doc Type: Logan, UT.
• Copyright Material: NO

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TABLE OF CONTENTS
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INTRODUCTION . . . .. . , . .
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STUDY AREA 5
Vegetation and Climate . . . . 5
Sampling Stations . . . . . . . „ . •
MATERIALS AND METHODS 10
PHYSICAL AND CHEMICAL ENVIRONMENT 12
.Gradient 12-
Discharge . . . . 12
Temperature . . . . . . . . . . . 15
Turbidity . . _ -. . . . . . . 1:6._ .
Dissolved Oxygen . . . 19
Dissolved Solids . . . . . . . 23
Hydrogen-ion Concentration"---.
•""25"?
DISTRIBUTION AND ABUNDANCE OF BENTHIC INVERTEBRATES 26
Little Hole . . 27
Carr Ranch . . . 31
Echo Park . . . .. 33
Island Park . .. 36
Supplementary Stations . 40
SPECIES COMPOSITION OF BENTHIC INVERTEBRATES BEFORE AND
AFTER CONSTRUCTION OF FLAMING GORGE DAM . 45
DRIFT RATES OF BENTHIC INVERTEBRATES . 52
Drift Sampling . . . . . . . . . . . . . . . 53