Implications of Zostera noltii recolonization on Hydrobia ulvae population structure success

► Eutrophication led to the disappearance of Z. noltii in the early 1990s. ► Highest H. ulvae abundance, biomass and production during the macroalgal bloom. ► A decade after restoration measures, Zostera noltii recolonized the sandflat area. ► Hydrobia ulvae abundance, biomass and production increased, since Z. noltii reappeared. ► Large size H. ulvae individuals increased, becoming the population more structured.