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Sedimentation in a coastal mangrove system, Red River Delta, Vietnam
Janssen-Stelder, B.M.; Augustinus, P.G.E.F.; van Santen, W.A.C. (2002). Sedimentation in a coastal mangrove system, Red River Delta, Vietnam, in: Winterwerp, J.C. et al. (Ed.) (2002). Fine sediment dynamics in the marine environment. Proceedings in Marine Science, 5: pp. 455-467
In: Winterwerp, J.C.; Kranenburg, C. (Ed.) (2002). Fine sediment dynamics in the marine environment. Proceedings in Marine Science, 5. Elsevier: Amsterdam. ISBN 0-444-51136-9. XV, 713 pp., more
In: Proceedings in Marine Science. Elsevier: Amsterdam. ISSN 1568-2692, more
Peer reviewed article

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Keyword
    Marine
Author keywords
    mangroves; sedimentation; hydrodynamics; Red River Delta; Vietnam

Authors  Top 
  • Janssen-Stelder, B.M.
  • Augustinus, P.G.E.F.
  • van Santen, W.A.C.

Abstract
    The mangroves in the Red River Delta in Vietnam are exposed to impacts of climatic change and anthropogenic forcing. Therefore, their ecological function as well as their function as coastal and riverbank defence are threatened. An enhancement of the process knowledge can help to predict further development of the coastal mangroves in the Red River Delta, which can be applied in management issues. In this paper field measurements are used to identify the dominant hydrodynamic processes on the banks of an estuary where bare mudflats grade into mangrove areas. Furthermore the resulting sedimentation pattern is described. The measuring results show that there is no set-up of the water level caused by the mangroves. The mangroves do reduce the current velocity significantly. This leads to a fining of the sediment from the riverbank into the mangrove forest. Sedimentation rates are high in the frontage of the pioneer zone and low in the back of the mangrove forest. The mangroves appear to colonise the mud banks when these reach a critical height.

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