Particle fluxes in submarine canyons along a sediment-starved continental margin and in the adjacent open slope and basin in the SW Mediterranean Sea

•The continental margin off SE Spain is sediment-starved and submarine canyons incised into itshow low particle fluxes.•Off-shelf particle export followingoccasional river dischargeis determined by storms and modulated by oceanographic conditions.•Canyon head incision and distance to the shoreline play a key role in particle trapping capability by submarine canyons.•Bottom trawling impacts particle fluxes in some of the investigated canyons (i.e. the Garrucha-Almanzora Canyon System).•Few terrestrial-sourced particles reach the deep basin off the Gulf of Vera.