Diversity, structures assemblages and production of benthic communities on artificial reefs, a comparative case study in the English Channel

Abstract In this study, the diversity and structures assemblages of benthic communities present on artificial reefs (AR) immersed for 5 years were monitoring during a full year in 2020. The comparison two different sites Bernières Bay Seine Cherbourg central part English Channel brings innovative results efficiency such structures. Benthic fauna macroalgae studied; several biotic indices like Shannon-Wiener index calculated. was classified according to their trophic group biomass estimated. Our pointed out strong differences indicators between seasons. more abundant diversified than Cherbourg. Primary producers’ higher dominated by Rhodophyceae species. production showed that productive system Seine. This study highlighted create habitats promote associated living communities. comparable conditions, systems highlighted: “primary producer reef” consumer reef”.