Skip to main content

Wann ist ein Rechen ein Fischschutzrechen?

 
Cover

© Forum Fischschutz und Fischabstieg

Print

Wann ist ein Rechen ein Fischschutzrechen?

Die funktionalen Elemente eines Fischschutzsystems

Publication
Citation

Wagner, Falko 2021: Wann ist ein Rechen ein Fischschutzrechen? Die funktionalen Elemente eines Fischschutzsystems. Institut für Gewässerökologie & Fischereibiologie Jena: 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 "Wann ist ein Rechen ein Fischschutzrechen? (When is a rake a fish protection rake?)" is available for download.

The key messages of Fact Sheet No. 05 are:

  • It is mandatory that a fish protection system at both new and existing hydropower facilities perform three functions: Blocking, guiding, and diverting.
  • In fish protection systems, fish screens and bypasses form a functional unit. Screens without bypasses or bypasses without suitable screens do not constitute a protection system.
  • Horizontally inclined 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 screens can direct fish to bypass entrances or collection devices near the surface across the entire width of the turbine inlet.

 

Contact

More content from this project

Language
German
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