Specific diversity data of macrobenthic communities in the \"Rivière de Morlaix\" study site in the English Channel from 1977 to 1996

Monitoring of species richness, abundances of all macrobenthic species, biomass, sediment grain size, temperature and salinity. The experiment was designed to study long-term changes in community structure in response to global change (climatic change) and local anthropogenis pressures (e.g. eutrophication).