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Modelling soil, carbon and vegetation dynamics in estuarine wetlands experiencing sea-level rise

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dc.citation.titleProceedings of 2013 IAHR Congress © 2013 Tsinghua University Press, Beijinges
dc.contributor.organizerInternational Association for Hydro-Environment Engineering and Research (IAHR) 2013es
dc.creatorTrivisonno, Franco N.
dc.creatorRodriguez, Jose F.
dc.creatorRiccardi, Gerardo A.
dc.creatorSaco, Patricia M.
dc.date.accessioned2020-03-03T02:36:10Z
dc.date.available2020-03-03T02:36:10Z
dc.date.issued2013
dc.description.abstractEstuarine wetlands are among the most productive ecosystems in the world, providing unique habitats for fish and many terrestrial species. They also have a carbon sequestration capacity that surpasses terrestrial forest. In NSW, and most of south eastern Australia, they typically display a vegetation zonation with a sequence mudflats - mangrove forest - saltmarsh plains from the seaward margin and up the topographic gradient. Estuarine wetlands respond to sea-level rise by vertical accretion and horizontal landward migration, in order to maintain their position in the tidal frame. In situations in which accretion cannot compensate for sea-level rise and buffer areas for landward migration are not available, estuarine vegetation can be lost due to unsuitable hydraulic conditions. Predicting estuarine wetlands response to sea-level rise requires simultaneous modelling of water flow, soil and vegetation dynamics. This paper presents some preliminary results of our recently developed numerical model for wetland dynamics in wetlands of the Hunter estuary of NSW. The model continuously simulates tidal inputs into the wetland and vegetation types are determined based on their preference to prevailing hydrodynamic conditions. Accretion values based on vegetation types are computed and the topography is updated accordingly. The model is driven by local information collected over several years, which include estuary water levels, accretion rates, soil carbon content, flow resistance and vegetation preference to hydraulic conditions. Model results predict further wetland loss under an accelerated sea-level rise scenario and also under current conditions of moderate increase of estuary water levels.es
dc.description.filSchool of Engineering, University of Newcastle, Callaghan, NSW, Australiaes
dc.description.filDepartamento de Hidráulica, Escuela de Ingenieria Civil, Fac. de Cs. Exactas, Ingenieria y Agrimensura, Universidad Nacional de Rosarioes
dc.description.filConsejo de Investigaciones de la Universidad Nacional de Rosarioes
dc.formatapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2133/17704
dc.language.isoenges
dc.rightsopenAccesses
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/2.5/ar/*
dc.subjectVegetation dynamicses
dc.subjectEstuarine wetlandses
dc.subjectSea-level risees
dc.titleModelling soil, carbon and vegetation dynamics in estuarine wetlands experiencing sea-level risees
dc.typeconferenceObject
dc.typedocumento de conferencia
dc.type.collectioncomunicaciones

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