Comparison of the Injuries of a Common Nase Before and After the Passage of a Hydropower Site
Ecologic Institute 2020: Comparison of the injuries of a common Nase before and after the passage of a hydropower site. 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).
In studies investigating the risk of injury and mortality of fish during the passage of hydropower sites, the animals are inevitably caught and handled at least once. Injuries to the fish cannot be ruled out in this process. It is therefore imperative that they are quantified and considered when calculating the passage-related effects.
These injuries range from minor injuries such as loss of scales or injuries to the fins to skin tears, bruises, injuries to the eyes and tissue haemorrhages, and even death. The longer the emptying intervals of the fishing gear, the more fish can be injured and the more severe are the injuries that occur (Schmalz 2010, Schmalz 2011, Pander et al. 2018).
This illustration shows a comparison of the injuries of a common Nase before and after the passage of a hydropower site. 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.