Issues at stake

International scientific context

GIS SIEGMA: objectives and study sites

Level of knowledge

Extraction pressure

Physical impacts
Effects on the coastline
Effects on the water column
Effects on topography and seabed sediments
Restoration of topography and seabed sediments

Biological Impacts
Effects on benthos
Recolonization of benthic communities
Effects on fish
Recovery of the fish communities
Effects on the trophic relationships between benthos and fish
Modelling of the Eastern English Channel's food web

Effects on habitats and biodiversity

Dissemination of marine aggregate extraction issues to the public

Conclusion

Prospects

Bibliography

Glossary