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Derivation of the Study Parameters in Field Studies for the Determination of the Site Injury Rate

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Ecologic Institute 2020: Derivation of the Study Parameters in Field Studies for the Determination of the Site Injury Rate. Infographic published in: Wagner, F. and P. Warth 2020: Evaluation of primary injury to fish at hydropower sites. Methodological recommendations for quantifying the risk of injury and mortality to fish during the passage of hydropower sites. Jena: Institute of Aquatic Ecology and Fish Biology (IGF Jena).

A planning tool for a site evaluation is available in Schmalz et al. (2015) and DWA (2021). Due to the diverse hazards to which fish are exposed during the passage of hydropower sites, not only the turbine but all downstream migration corridors must be investigated. For this reason, both corridor-specific and overall site-related assessment parameters are specified:

  • Corridor-specific injury rate
  • Corridor-specific mortality / survival rate
  • Site injury rate
  • Site-specific mortality / survival rate

These assessment parameters include various study parameters that must be determined and quantified in the field. Factors influencing the results, such as the previous injury of the fish and the study-related influences, are excluded. For the assessment parameter site injury rate, the derivation of the necessary study parameters is exemplified in the following figure. 

This illustration exemplifies the derivation of the study parameters in field studies for the determination of the site injury rate. It is part of a fact sheet on primary injury to fish at hydropower sites.

The infographic is published under a creative commons license CC BY 4.0. That means it can be copied and redistributed in any medium or format and for any purpose as long as appropriate credit to the authors (Ecologic Institute, Institute of Aquatic Ecology and Fish Biology) is given.

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Language
German
Credits

Media format: coloured infographic for a digital fact sheet
Copyright: CC BY 4.0
Content: Falko Wagner, Peter Warth ( Institut für Gewässerökologie & Fischereibiologie, Jena)
Graphic design: Lena Aebli (Ecologic Institute)

Funding
Published in
Fact Sheet 03: Evaluation of primary injury to fish at hydropower sites
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Keywords
Water Framework Directive, WFD, river, nature conservation, biodiversity, energy, hydropower, fish, migration, watercourse, connectivity, restoration, hydromorphology, protection
Germany, Switzerland, Austria
infographic, visualization, illustration, creative commons, fact sheet

Source URL: https://www.ecologic.eu/19144