Sand dune ecosystems as a form of defence against coastal hazards: assessment on the Noirmoutier coast (Vendée)
Sand dune ecosystems as a form of defence against coastal hazards: assessment on the Noirmoutier coast (Vendée) By Françoise DEBAINE et Marc ROBIN L'Atlas Bleu / Protecting Coastal risk, dune ecosystem, protection service, geoindicator, diagnosis and monitoring Noirmoutier (Vendée). By considering dune ecosystems as agents of protection facing coastal risks, the article presents a method of dune condition diagnosis and monitoring based on the example of the Noirmoutier coastline. The method is based on a set of geoindicators related to a system of coastal “boxes” (50x300m). It allows to map the