[Avoidance of injuries to migrating fish by hydropower and water intake plants].
Every year numerous downstream migrating fish are lethally injured by hydro power plants and inlet works. Especially the katadromous Eel (Anguilla anguilla) and anadromous species like Atlantic Salmon (Salmo salar), which have to migrate downstream into the ocean for closing their life cycle, are highly endangered. Due to their specific migratory behavioral pattern, size and morphology conventional protection techniques, like screens do not properly keep them out from getting into the power plant intakes. Despite of the relevance of this problem for ecology and fishing, there are no protection and downstream migration facilities in Europe available, which can efficiently avoid the damage of all species and sizes of downstream migrating fish. Nevertheless according to protect the fish populations it's necessary to use consequently fish protection and downstream migration facilities, i.e. mechanical barrieres or alternative techniques like early warning systems as a prerequisit for a fish-friendly operational management of hydro power plants.
Adam
B
B
Institut für angewandte Okologie, Kirtorf-Wahlen. schwevers@vobis.net
D000811:Anguilla / Q000293:injuries*; D025041:Animal Migration; D000827:Animal Welfare; D000818:Animals; D005618:Fresh Water; D011210:Power Plants; D020317:Salmo salar / Q000293:injuries*; D014947:Wounds and Injuries / Q000517:prevention & control / Q000662:veterinary*