Mangroves Mangroves are pioneering plants that colonize tidal flats and other areas. The timing of plant part loss is seasonal and related to changes in salinity.
Subaerial roots promote sedimentation due to their baffling and trapping effects.
The density of the aerial roots is crucial in the reduction of current and resultant sedimentation. Mangrove peat formation is dependent on the mangrove type and its position within the tidal zone. Marshes Salt-tolerant grasses and sedges occur in subtropical and temperate coastal zones and may be intermixed with mangroves. Aquatic and semi-aquatic plants inhabit marshes. Plants occupying marshes are instrumental in accreting sediment by trapping during tidal cycles.