Le Fur I. auteur aut IRD De Wit R. auteur aut IRD Plus M. auteur aut IRD Oheix J. auteur aut IRD Simier Monique auteur aut IRD Ouisse V. auteur aut IRD text journalArticle eng text/pdf born digital access A large spectrum of coastal lagoon types with a wide range of environmental conditions is observed along the French Mediterranean coast. These comprise wide trophic and salinity gradients, ranging from oligotrophic to hypertrophic status, and from nearly freshwater to slightly above marine Mediterranean Sea water salinities, respectively. The statistical analysis of a long-term dataset, including water column variables and observations of macrophyte genera, showed that salinity, depth, and then trophic status, were important factors explaining the distribution of benthic macrophytes for the soft-bottom sediments in the 34 studied French Mediterranean lagoons. Based on this, we assumed that the vegetation succession along the eutrophication gradient was different according to the lagoon salinity ranges. Euhaline and polyhaline lagoons follow the well-known Schramm schematic model, where aquatic angiosperm such as seagrasses dominate under oligotrophic conditions, and opportunistic macroalgae and phytoplankton dominate under eutrophic and hypertrophic conditions. In oligohaline and mesohaline lagoons, the succession is probably an intermediate scheme between the successions observed in small temperate lakes and in marine coastal ecosystems due to the presence of both brackish and freshwater species. We thus propose a conceptual scheme for the oligohaline and mesohaline lagoons. specialized French coastal lagoons Submerged aquatic vegetation (SAV) Eutrophication Salinity Depth Canonical correspondence analysis (CCA) FRANCE ZONE MEDITERRANEENNE 036 020 808 1 175-200 2018 0018-8158 https://www.documentation.ird.fr/hor/fdi:010072065 10.1007/s10750-017-3421-y 0018-8158 [F B010072065] https://www.documentation.ird.fr/hor/fdi:010072065 https://www.documentation.ird.fr/intranet/publi/2018/02/010072065.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-03-05 2023-07-11 fdi:010072065 fre