Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 353939
Title Nutrient dynamics in mangrove areas of the Red River Estuary in Vietnam
Author(s) Wösten, J.H.M.; Willigen, P. de; Tri, N.H.; Lien, T.V.; Smith, S.V.
Source Estuarine Coastal and Shelf Science (2003)1-2. - ISSN 0272-7714 - p. 65 - 72.
DOI https://doi.org/10.1016/S0272-7714(02)00331-1
Department(s) Soil Science Centre
ALTERRA Wageningen UR
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) budgets
Abstract Nutrient dynamics of mangrove in the 107 kmr large estuary of the Red River Delta in Vietnam are studied using the existing LOICZ-CABARET budget model. The methodology and assumptions underlying this model are described. Input data for evaporation, rainfall, river discharge, and concentrations of salt, phosphorus and nitrogen are obtained during measurement campaigns in Vietnam. The calculated P-balance of the estuary together with measured data on the C/P ratio of mangroves yield a calculated mangrove biomass growth rate of 80 kg dry matter per ha per day. Direct measurements of mangrove growth show a rate of 31 kg dry matter per ha per day. Considering the uncertainties involved in this study where nutrient exchange with mineral particles is ignored, the nutrient budget model established for the Red River Estuary proves to give acceptable results. The model demonstrates that the mangroves in the estuary act as clear sinks of nutrients and sequester some 26000 kg N per day and some 3100 kg P per day for their biomass production. Next the model is used in an explorative way to investigate effects of realistic future scenarios. Increasing river discharge in combination with constant or proportionally increasing river nutrient concentration results in increasing nutrient concentrations in the estuary. Increasing river discharge in combination with decreasing river nutrient concentration results in decreasing nutrient concentrations in the estuary. Constant river discharge in combination with increasing river nutrient concentration results in increasing nutrient concentrations in the estuary. The scenario analysis helps to understand the different interactions in the nutrient dynamics of the Red River mangrove area.
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