Coastal systems of multiple uses

, by Vidal Ayouba Isabelle

Representatives: Rutger De Wit (CNRS) and Vincent Ouisse (Ifremer)


The coastal area provides important ecosystem services to companies and is particularly affected by global changes (e.g. population pressure, pollution, habitat deterioration, rising sea levels). Coastal ecosystems have therefore undergone multiple degradations (e.g. eutrophication, biodiversity loss, potentially toxic algal blooms).
It is now necessary to conduct research on the restoration of these ecosystems while trying to maintain their use. This research will be developed in the context of different national and European regulations (ICZM European Framework Directive on integrated management of the coastal zone, WFD Water Framework Directive, MSFD and Strategy Framework Directive of the Marine Environment) and the IPBES (Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services).


  • To analyze and understand in an integrative manner the state of coastal ecosystems.

  • To develop an ecological approach to the restoration of coastal ecosystems.

  • To reconcile the maintenance (or development) of the various uses of coastal systems with the conservation of biodiversity and habitats.


  • Coastal lagoons in the Gulf of Lion and Corsica.

  • Coastal lagoons and estuaries in southern countries (Tunisia, Indian Ocean, Vietnam).
 -*International and national sites protected by a regulation ("Ramsar", "World Heritage", "biosphere reserve" or in respect of their participation in ecological networks such as ecological corridors).


  • Data: (i) in situ, punctual or permanent observations of the biology, environment and uses of coastal ecosystems, (ii) data from in situ experiments.

  • Methods: restoration ecology; eco-engineering; analysis of coastal and sea law, environmental law.

  • Modeling: evolution of coastal systems scenarios; integrated modeling (hydrodynamic – ecology pairing); bio-economic modeling.

There is also a presentation of the team’s activities in the ”Lettre des Lagunes” (January 2015).


MARBEC MARine Biodiversity, Exploitation and Conservation, is a research unit which includes the staff of 4 organizations: IRD, IFREMER, UM and CNRS. Its objective is the study of marine biodiversity in lagoon coastal and offshore ecosystems, at different integration levels, molecular, individual, population and community aspects and the way humans use this biodiversity.