Rivers rank among some of the most endangered ecosystems in the world. One of the main problems is the loss of longitudinal connectivity caused by dams and other barriers. However dams are used for flood control, and provide water for drinking, irrigation, transport and leisure. In addition, the hydropower generated by dams is essential for meeting the 20% target of renewable energies set by the EC for 2020. Trade-offs and compromises in the use of dams are thus inevitable.
The first challenge faced by water managers, researchers and water providers is to assess the extent of fragmentation caused by dams and other berriers, and the opportunities for restoration. Preliminary studies indicate that current barrier inventories grossly underestimate the loss of connectivity as they typically only register less than 3% of all stream barriers. But which barriers should be mitigated first? How can we maximise their economic and social impacts while reducing their impacts?
Using the AMBER Project as a guide, the objective of this workshop is to identify the main challenges in the restoration of stream connectivity, and to discuss strategies for accelerating the pace and effectiveness of restoration programmes from an adaptive management perspective. It is hoped that this will serve to exchange knowledge and strengthen similar initiatives across Europe in order to make the best possible use of the available resources.