It recommends the fight against eutrophication and the creation of new monitoring programs. In this context, it applies the results of a study defining indicators for the level of eutrophication and the development of a diagnostic tool for eutrophication status (in lagoons), applicable to routine. The RSL is the result of a partnership between the "Ifremer", the "Région Languedoc-Roussillon" and the "Agence de l’Eau Rhône Méditerranée Corse". The coordination is carried out by the "Cépralmar". French macrophyte occurence data are collected during RSLPHY monitoring surveys on Mediterranean coast.
The French Mediterranen Lagoon Monitoring Network (RSL project) was rolled out in 2000 within the framework of the "SDAGE Rhône Méditerranée Corse"