Monitoring the impacts of marine aggregate extraction
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Présentation
This document is a comprehensive survey of the scientific knowledge acquired in late 2012 on the environmental impacts of marine aggregate extraction.
The synthesis completes international knowledge (ICES WGEXT, COST Action 638 "MAGGNET") with local investigation in Normandy on two sites of the Eastern English Channel in the framework of the 2003-2011 SIEGMA programme.
Table des matières
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