TY - JOUR T1 - Sediment migrations drive the dynamic of macrobenthic ecosystems in subtidal sandy bedforms A1 - Robert,Alexandre A1 - Quillien,Nolwenn A1 - Bacha,Mahmoud A1 - Caulle,Clemence A1 - Nexer,Maelle A1 - Parent,Briz A1 - Garlan,Thierry A1 - Desroy,Nicolas AD - France Energies Marines Environmental Integration R&D Program, 525 Avenue Alexis de Rochon, 29280 Plouzané, France AD - IFREMER, Unité Littoral, Laboratoire Environnement et Ressources de Bretagne Nord, CRESCO, 38 rue du Port-Blanc, Dinard 35800, France AD - Laboratoire d'Océanologie et de Géosciences, UMR 8187, CNRS, Université du Littoral Côte d'Opale, 32 Avenue Foch, 62930 Wimereux, France AD - Ocean Zoom, 2 chemin de la Houssinière, 44300 Nantes, France AD - Shom, 29200 Brest, France UR - https://doi.org/10.1016/j.marpolbul.2021.112695 DO - 10.1016/j.marpolbul.2021.112695 KW - Macrobenthos KW - Ecosystem functioning KW - Biological traits KW - Soft sediments KW - North Sea KW - Spatio-temporal variations KW - Sandy bedforms N2 - A traditional taxonomic approach coupled to a biological traits analysis was conducted in order to provide a new insight into macrobenthic communities associated with subtidal sandy environments. Results suggest that the macro-scale distribution of benthic communities is mainly driven by the migration rate of bedforms (sandbank, barchan dune and transversal dune) which changes the sediment grain size and reduces macrobenthic diversity. A classic scheme of species/traits succession was also observed from less to more physically disturbed areas. Finally, the high frequency of migration events homogenized macrobenthic communities between the troughs to the crest of bedforms. As bedforms areas are targeted for the commissioning of offshore windfarms the information provided by the present paper will be particularly useful to implement the environmental impact assessment required for such activities at sea. Y1 - 2021/10 PB - Elsevier BV JF - Marine Pollution Bulletin SN - 0025-326X VL - 171 ID - 81731 ER -