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Return of Vänern salmon to Norway - some topics to discuss during the field trip

Return of Vänern salmon to Norway - some topics to discuss during the field trip. 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

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Return of Vänern salmon to Norway - some topics to discuss during the field trip

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  1. Return of Vänern salmon to Norway- some topics to discuss during the field trip

  2. 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

  3. 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?

  4. “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?

  5. 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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