Location

Groningen, The Netherlands

Event Website

http://fishpassage.umass.edu/

Start Date

23-6-2015 11:20 AM

End Date

23-6-2015 11:35 AM

Description

Abstract:

Since 1995 between state authorities of rhineland-palatinate und RWE Power AG exits the project (EEL PROTECTION INITIATVE RP/RWE) to avoid/minimize the hydropower mortality of migrating silver eels in river Mosel and Saar. The ecology of Mosel (MQ 328 m³/s) and its tributary Saar (MQ 60 m³/s) is characterized by oceanic and rainy-dominated discharge, with high degree of variability. These rivers are regulated for shipping and subsequent hydropower purposes. The overall eel mortality due to hydropower is estimated about 77%. No realistic technical solution (physical barriers, bypass) could be elaborated with theses old hydropower station devices in these streams yet. The first-aid measure established in 1997 "catch and carry" was a pioneer action in germany and is still going on. A comprehensive knowledge of eel behaviour in relation to the optimal capture could be gathered. Besides an eel adjusted operation of the turbines one can calculate the contribution of "catch and carry" to the downstream eel migration rsp. downstream mortality as substantial (24 %). Also there has been a socioeconomic impact of EEL PROTECTION INITIATVE on the traditional/artisanal fishery. The project between authorities an private enterprises causes positive and innovative attitudes on search of better solutions.

Comments

Presenting Author Bio: 14.01.1953; study fishery biology Kiel university 1971 - 1978; bavarian institute for fishery 1979 - 1982; managing director in aquaculture 1982 -1984; 1984 - 1990 fishery developing projects Central and South America; head of fishery department in rhineland-palatinate, Germany.

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Jun 23rd, 11:20 AM Jun 23rd, 11:35 AM

Session C4: Eel Protection Initiative (EPI) Rhineland-Palatinate/RWE Power AG on the Moselle River with Special Reference to "Catch & Carry“ Methods

Groningen, The Netherlands

Abstract:

Since 1995 between state authorities of rhineland-palatinate und RWE Power AG exits the project (EEL PROTECTION INITIATVE RP/RWE) to avoid/minimize the hydropower mortality of migrating silver eels in river Mosel and Saar. The ecology of Mosel (MQ 328 m³/s) and its tributary Saar (MQ 60 m³/s) is characterized by oceanic and rainy-dominated discharge, with high degree of variability. These rivers are regulated for shipping and subsequent hydropower purposes. The overall eel mortality due to hydropower is estimated about 77%. No realistic technical solution (physical barriers, bypass) could be elaborated with theses old hydropower station devices in these streams yet. The first-aid measure established in 1997 "catch and carry" was a pioneer action in germany and is still going on. A comprehensive knowledge of eel behaviour in relation to the optimal capture could be gathered. Besides an eel adjusted operation of the turbines one can calculate the contribution of "catch and carry" to the downstream eel migration rsp. downstream mortality as substantial (24 %). Also there has been a socioeconomic impact of EEL PROTECTION INITIATVE on the traditional/artisanal fishery. The project between authorities an private enterprises causes positive and innovative attitudes on search of better solutions.

https://scholarworks.umass.edu/fishpassage_conference/2015/June23/18