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What Makes a Screen to a Fish Protection Screen?

 
Cover of the factsheet "What makes a screen to a fish protection screen

© German Participatory Forum on Fish Protection and Downstream Migration

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What Makes a Screen to a Fish Protection Screen?

The functional components of a fish protection system

Publication
Citation

Wagner, Falko 2021: What makes a screen to a fish protection screen? The functional components of a fish protection system. Jena: Institute of Aquatic Ecology and Fish Biology, IGF Jena.

This fact sheet examines the functional elements of a fish protection system and explains when a rake is a fish protection rake. The fact sheet "What makes a screen to a fish protection screen" is available for download.

The key messages of Fact Sheet No. 05 are:

  • A fish protection system must provide three functions: Blocking, guiding and transferring.
  • Fish protection screens and bypasses form a functional unit in fish protection systems. Screens without bypasses or bypasses without a suitable screen do not constitute a protection system.
  • Horizontally angled fish protection screens guide fish across the entire water column to the bypass. The fish can remain in their natural swimming horizon.
  • Vertically angled fish protection screens can guide fish to bypass inlets or collection devices near the surface across the entire width of the turbine inlet.

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Languages
German
English
Authorship
Falko Wagner (Institut für Gewässerökologie & Fischereibiologie Jena)
Credits

Graphic design and layout: Jennifer Rahn
Editing: Melanie Kemper

Funding
Year
Dimension
13 pp.
Project
Project ID
Keywords
Water Framework Directive, WFD, river, nature conservation, biodiversity, energy, hydropower, fish, migration, watercourse, connectivity, restoration, hydromorphology, protection