Results

The sea lamprey is an amphihalin migratory fish found near the coast and in European rivers. Its presence on the Sélune was limited to the downstream zone due to the dams. What is the situation now that the dams have been removed?

The European eel is present in Europe and in the Sélune valley, but its migration is largely hindered by obstacles such as dams. What impact will the removal of the dams on the Sélune have on this species?

Atlantic salmon were present in the Sélune valley long before the dams were built. Their migration was hindered by the presence of the dams. Where are they today?

The Sélune River transports many fine and dissolved elements in the water from its catchment area. How do these elements transported in the water evolve? And how are they affected by the removal of dams?

A number of so-called invasive exotic species are present on the Sélune. Where are they and how will they spread following the removal of the dams, and therefore the opening up of the passage?

One of the objectives of the operation to remove the dams on the Selune river is to restore the river to good ecological status. So what is the current 'state' of the Selune?

Since 2019, as part of the research project on habitat use by Atlantic salmon (Salmo Salar), Émilien Lasne and his colleagues have been capturing salmon to fit them with radio transmitters.

Without the reservoirs, new banks are appearing, heralding the return of a new vegetation. This vegetation has been monitored along the Sélune since 2015 in order to understand its rapid recolonisation and evolution.