9696

• UCREFRP Catalog Number: 9696
• Author: Korte, N.E.
• Title: Selenium poisoning of wildlife and western agriculture
• USFW Year: 2000.
• USFW - Doc Type: cause and effect.
• Copyright Material: NO

CONTENTS
Page
LIST OF FIGURES ..........................................................................................................................v
LIST OF TABLES .........................................................................................................................vii
EXECUTIVE SUMMARY .............................................................................................................ix
1. INTRODUCTION .....................................................................................................................1
1.1 BACKGROUND ................................................................................................................3
1.2 PROJECT SCOPE ..............................................................................................................3
1.3 AREA OF STUDY ...........................................................................................................4
1.4 THE ENDANGERED FISH .............................................................................................4
1.5 FRAMING THE CONTROVERSIES ...............................................................................5
1.5.1 Historical Accounts of Decline of the Endangered Species ...................................5
1.6 DISCUSSION ..................................................................................................................10
2. SELENIUM CYCLING IN THE ENVIRONMENT ...............................................................11
2.1 SOURCE ..........................................................................................................................11
2.2 BIOGEOCHEMISTRY ....................................................................................................12
2.2.1 Cycling in Wetlands ...............................................................................................13
2.3 DISCUSSION ..................................................................................................................13
BIOTRANSFORMATIONS OF SELENIUM .........................................................................15
3.1 TOXICITY TO FISH .......................................................................................................16
3.1.1 Acute Toxicity ........................................................................................................17
3.1.2 Chronic Toxicity ....................................................................................................17
3.2 TOXICITY TO BIRDS .................................................................................................... 20
3.3 DISCUSSION ..................................................................................................................22
HABITAT, NONNATIVE FISH, AND LIFESTYLE ............................................................22
4.1 HABITAT ........................................................................................................................ 22
4.2 NONNATIVE FISH .........................................................................................................25
4.3 FISH CHARACTERISTICS ............................................................................................26
4.3.1 Razorback Sucker ...................................................................................................26
4.3.2 Colorado Pikeininnow (Squawfish) .......................................................................27
4.3.3 Flannelmouth Sucker ..............................................................................................27
4.4 DISCUSSION ..................................................................................................................28
5. STANDARDS .........................................................................................................................28
5.1 HABITAT CONSIDERATIONS .....................................................................................28
5.2 CHRONIC CRITERIA .....................................................:...............................................29
5.3 ACUTE CRITERIA ......................................................................................................... 30
5.4 DISCUSSION ..................................................................................................................30