Particle reworking and solute transport by the sediment-living polychaetes Marenzelleria neglecta and Hediste diversicolor

► Marenzelleria neglecta is an efficient bioirrigator but not particle-reworker. ► Hediste diversicolor is a more efficient particle-reworker than M. neglecta. ► Invasion of Marenzelleria in may increase the release of nutrients and contaminants.