Event Title

Session C6: Experiences of the Eel-Protective Power Plant Management in the Weser River System

Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

23-6-2015 5:15 PM

End Date

23-6-2015 5:40 PM

Description

Abstract:

Legal and political requirements expect all sectors in society to take river ecosystem health and biodiversity into consideration. Statkraft, international leader in hydropower and Europe’s largest generator of renewable energy has implemented an early-warning system in combination with a fish-friendly turbine management for all its run-of-river hydropower plants located along the Weser river system.

The European eel (A. anguilla) stock is highly endangered and faces multiple stressors such as pollution, overfishing, lack of habitat as well ecological discontinuity through run-of-river hydropower stations and weirs, especially during migrating season (Aug-Feb). When migrating, there is a risk for silver eel getting injured by intake rakes and turbine blades. The eel-friendly turbine passage is currently considered to be the best practice in protecting migrating silver eel by reducing injuries during turbine passage and by significantly increasing the total survival rate. The eel-protective power plant management addresses one critical life phase for the endangered silver eel and is a sustainable, economic as well ecologic long term solution significantly increasing the number of eel leaving European freshwaters, which is, from a management perspective, likely to be the most effective route to improving eel stock. Experiences and results of 3 years operation mode will be presented.

Comments

Presenting Author Bio: Dr. Sonja Stendera is an aquatic ecologist with international research experience in freshwater ecology. She is now the environmental coordinator at Statkraft in Germany responsible for implementing the WFD and fish protection measures at their run-of-river hydropower plants.

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Jun 23rd, 5:15 PM Jun 23rd, 5:40 PM

Session C6: Experiences of the Eel-Protective Power Plant Management in the Weser River System

Groningen, The Netherlands

Abstract:

Legal and political requirements expect all sectors in society to take river ecosystem health and biodiversity into consideration. Statkraft, international leader in hydropower and Europe’s largest generator of renewable energy has implemented an early-warning system in combination with a fish-friendly turbine management for all its run-of-river hydropower plants located along the Weser river system.

The European eel (A. anguilla) stock is highly endangered and faces multiple stressors such as pollution, overfishing, lack of habitat as well ecological discontinuity through run-of-river hydropower stations and weirs, especially during migrating season (Aug-Feb). When migrating, there is a risk for silver eel getting injured by intake rakes and turbine blades. The eel-friendly turbine passage is currently considered to be the best practice in protecting migrating silver eel by reducing injuries during turbine passage and by significantly increasing the total survival rate. The eel-protective power plant management addresses one critical life phase for the endangered silver eel and is a sustainable, economic as well ecologic long term solution significantly increasing the number of eel leaving European freshwaters, which is, from a management perspective, likely to be the most effective route to improving eel stock. Experiences and results of 3 years operation mode will be presented.

https://scholarworks.umass.edu/fishpassage_conference/2015/June23/41