User manual

Science Manual – Using Video Images for Fisheries Monitoring v
Contents
Science at the Environment Agency iii
Acknowledgements iv
1 Introduction 1
1.1 Where and When to use Video Images 1
1.2 Range of Applications 2
2 Criteria for Site Appraisal 2
2.1 Monitoring 2
2.1.1 Species ID 2
2.1.2 Sizing 3
2.1.3 Fish behaviour: 3
2.2 Logistics 3
2.2.1 Mains power 3
2.2.2 Equipment maintenance 3
2.2.3 Access to equipment 3
2.2.4 Equipment Housing 4
2.3 River characteristics 4
2.4 Cost 4
2.5 Incorporating Video Counting Facilities into a Fish Pass 4
2.5.1 New passes 4
2.5.2 Retrofitting 5
2.6 Validating an existing counter 5
2.7 Equipment Selection Matrix 5
3 Equipment 10
3.1 Housing 10
3.2 Power Supply 11
3.2.1 Mains Power 11
3.2.2 Battery Ban
ks 11
3.3 Lighting 12
3.3.1 Light panels – home-made and manufactured 13
3.3.2 Illuminators and LED lamps 14
3.3.3 Floodlights 15
3.3.4 Fluorescent Tube Lighting 15
3.3.5 Suspended Sediment 16
3.3.6 Algaecide and cleaning 16
3.4 Cameras 16