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Published byJoseph Ellis Modified over 9 years ago
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www.nina.no Return of Vänern salmon to Norway - some topics to discuss during the field trip
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www.nina.no Topics to discuss How do we define sustainable restoration? How do we “restore connectivity of the River Klara/Trysil/Femund” Includes traps and trucks? Models to re-establish salmon to Norway Fry, eggs, adults Models for capture and transport of smolt and adults Strategies to make homing and natural selection possible
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www.nina.no Fish migrations in River Klara/Trysil/Femund In principle, fishways should be constructed at all dams (?) But, will it bring salmon to Norway? Yes? (11 dams/fishways) No? -> Capture/transport and/or dam removal How to safeguard downstream migration?
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www.nina.no “Short” term: Continue transport of adults upstream Edsforsen Power Station (no 8 from Vanern)? Possible to safeguard “natural” migration / homing from Edsforsen to spawning areas in Sweden and Norway? Three hydropower dams before the assumed most important recruitment areas in Norway Includes the most difficult case: Höljes Power plant How to safeguard smolt migration and return of kelts?
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www.nina.no Issues for the first three years Prioritise activities (“what to do when, where”) Cost/benefits of different measures/activities Operationalize sustainability Ecological Economic Social
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