Increasing the passage efficiency for re-spawners: knowledge and technical solutions

The project aims to increase knowledge on the behavior and migration of post-spawners, their importance to populations and how to attain functional passage solutions.

This will be done through tests of technical solutions for guiding fish during downstream migration, using both field experiments and experiments conducted in a large flume.

Also, new data from salmon and trout populations will be collected and existing data will be analyzed to evaluate the significance of repeat spawners.

Finally, population models will be used to evaluate the role of repeat spawners and to objectively analyze the effect of remedial measures aimed at improving the status and migration opportunities for salmonid populations.