|Mangroves and intertidal morphology in Westernport Bay, Victoria, Australia|In: Marine Geology. Elsevier: Amsterdam. ISSN 0025-3227, more
Accretion; Coastal morphology; Environmental impact; Mangrove swamps; Marine geology; Sedimentation; Sediments; Avicennia marina (Forssk.) Vierh. [WoRMS]; PSE, Australia, Victoria, Western Port Bay [Marine Regions]; Marine
Westernport Bay, a marine system produced by Holocene submergence of a sunkland, was initially a mainly sandy embayment, but erosion and dispersal of clay derived from bordering freshwater swamps and weathered basalt cliffs has resulted in the formation of extensive tidal mudflats. The upper part of the intertidal zone consists of a salt marsh terrace fringed seaward by mangroves (Avicennia marina). Field measurements have shown sustained accretion under this mangrove fringe, in contrast with alternations of erosion and accretion on the mudflats to seaward, and the trapping of sediment by mangrove pneumatophore networks has been demonstrated by surveys and simulated experimentally. It is deduced that the mangroves have here shaped the pattern of sedimentation in such a way as to build a depositional terrace at high spring tide level, on which they have been succeeded by salt marsh communities.