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Tidal exchange between a freshwater tidal marsh and an impacted estuary: the Scheldt estuary, Belgium

Damme van, S. and Dehairs, F. and Tackx, M. and Beauchard, O. and Struyf, E. and Gribsholt, B. and Cleemput van, O. and Meire, P. (2009) Tidal exchange between a freshwater tidal marsh and an impacted estuary: the Scheldt estuary, Belgium. Estuarine Coastal and Shelf Science, 85, 197-207. ISSN 0272-7714.

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Official URL: http://dx.doi.org/10.1016/j.ecss.2009.08.005

Abstract

Tidal marsh exchange studies are relatively simple tools to investigate the interaction between tidal marshes and estuaries. They have mostly been confined to only a few elements and to saltwater or brackish systems. This study presents mass-balance results of an integrated one year campaign in a freshwater tidal marsh along the Scheldt estuary (Belgium), covering oxygen, nutrients (N, P and Si), carbon, chlorophyll, suspended matter, chloride and sulfate. The role of seepage from the marsh was also investigated. A ranking between the parameters revealed that oxygenation was the strongest effect of the marsh on the estuarine water. Particulate parameters showed overall import. Export of dissolved silica (DSi) was more important than exchange of any other nutrient form. Export of DSi and import of total dissolved nitrogen (DIN) nevertheless contributed about equally to the increase of the Si:N ratio in the seepage water. The marsh had a counteracting effect on the long term trend of nutrient ratios in the estuary.

Item Type:Article
Institutes:Nederlands Instituut voor Ecologie (NIOO)
ID Code:6381
Deposited On:23 Mar 2010 01:00
Last Modified:04 Sep 2014 09:44

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