7079

• UCREFRP Catalog Number: 7079
• Author: Carlson, C. A., et. al.
• Title: Fishes and Macroinvertebrates of the White and Yampa Rivers, Colorado
• USFW Year: 1979.
• USFW - Doc Type: Final Report on a Baseline Survey Conducted for the Bureau of Land Management.
• Copyright Material: NO

fiABLE OF CONTENTS
Pale
PREFACE a a o o o 1
INTRODUCTION a . o 2
~Jhi to River . . 3
Yampa River . o o o 12
DESCRIPTION OF STUDY AREAS . o a o 23
Fish sampling stations o 0 25
Macroinvertebrate sampling sites o 29
Habitat assessment . 0 32
FISHES o o o. o 0 35
Methods 0 35
Collections o 35
Sample processing 36
Disposition of preserved fishes o 37
Fish identification . o 0 38
Age and growth a o a 38
Spawning times o . 40
Food habits o o 40
Data anaylsis 41
Results o o 0 42
Fish i denti fi cation o o o o 42
Distribution 44
Electrofishing collections o 44
Seine and dipnet collections 53
Plankton-net collections o . . 57
Special 1978 collections o 57
Mean length comparisons o o . 62
Age and growth o o 62
Spawning times o o o 68
Food habits 78
MACROINVERTEBRATES a o o 0 85
Methods o 85
Collection o 85
Data analysis o o . . 86
Results . _ . 86
Aquatic insects: species composition 86
Aquatic insects: inventory by site o a o 96
Aquatic insects: inventory by date o o o 100
Aquatic insect diversity o o o 112
Statistical analysis of aquatic insect data o 115
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