Experimental estimation of assimilation rates of meiofauna feeding on 14C-labelled benthic diatoms

► Meiofaunal assimilation rate was estimated with 14C labeled diatoms tracing. ► Meiofauna assimilates 0.8, copepods 1.9 and the nematode around 1.3 ng C ind− 1 h− 1. ► Meiofauna would consume up to 12% of primary production in the Brouage mudflat.