9556

• UCREFRP Catalog Number: 9556
• Author: Bestgen, K. R., K. A. Zelasko and C. T. Wilcox.
• Title: Non-native fish removal in the Green River, Lodore and Whirlpool canyons, 2002-2006, and fish community response to altered flow and temperature regimes, and non-native fish expansion.
• USFW Year: 2007.
• USFW - Doc Type: 115,
• Copyright Material: NO

TABLE OF CONTENTS
EXECUTIVE SUMMARY .........................................................iv
LIST OF TABLES ..............................................................ix
LIST OF FIGURES ...............................................................x
KEY WORDS ................................................................ xiii
INTRODUCTION ................................................................1
STUDY AREA .................................................................7
METHODS ....................................................................8
Collection ofsmall-bodied fish ............................................. 9
Collection of large-bodied fish ............................................. 9
Browns Park habitat reconnaissance and fish sampling ......................... 11
Stream flow and water temperature data collection and presentation .............. 12
Fish sample data analysis and presentation ................................... 13
RESULTS AND DISCUSSION ......................................................14
Effects of Flaming Gorge Dam on Green River discharge and temperature patterns,
Lodore Canyon ...................................................14
Effects of Flaming Gorge Dam on Green River discharge and temperature patterns,
Whirlpool Canyon .................................................18
Composition of the fish community in Browns Park, Lodore Canyon, Whirlpool Canyon,
and Island-Rainbow Park reaches, 2002-2004 and 2005-2006 ............. 19
Composition of the fish community in Browns Park, Lodore Canyon, Whirlpool Carayora,
and Island-Rainbow Park reaches by gear type, 2002-2004 and 2005-2006 ... 20
Drift net sampling ......................................................23
Spatial and temporal patterns of distribution, abundance, and size-structure of selected
non-native and native species, from 1994 to 1996, 2002 to 2004, and 2005-2006
periods . ........................................................24
Non-native fishes ..................................................25
Native fishes . ....................................................33
Browns Park habitat and fish community sampling, 2006 ....................... 35
SUMMARY ...................................................................39
Flow arad temperature effects on the Green River fish community between 1994 to 1996,
2002 to 2004, and 2005-2006 .......................................39
Recommendations for temperature and fish community monitoring in the Greeri River
downstream of Flaming Gorge Dam .................................. 44
Temperature monitoring ........................................... 44
Large-bodied fish sampling recommendations .......................... 44
Whirlpool Canyon chub sampling recommendations ..................... 44
Small-bodied fishes ...............................................45
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