biological monitoring of the coastal waters of the Rhône-Mediterranean and Corsica basins, broken down into 2 distinct lots: - Lot 1 Biological monitoring of Posidonia - Lot 2 Biological monitoring of coralligenous habitats

Biological monitoring of Posidonia meadows includes the calculation of indicators of ecological status and ecological function of habitat: general data, monitoring and micro-mapping of the lower limit, surface indicator of the seagrass, vitality measurements of the Posidonia meadow at intermediate and lower depths, measurement and installation of thermometers, monitoring of the ecological function of the habitat by environmental DNA

Biological monitoring of coralligenous habitats includes the calculation of indicators of ecological status and ecological function of habitat: general description, modelling by photogrammetry and photographic quadrats, demography of erect species, measurement and installation of thermometers, monitoring of ecological function habitat by environmental DNA