Tidal exchange between a freshwater tidal marsh and an impacted estuary: the Scheldt estuary, Belgium |
| |
| Authors: | Stefan Van Damme Dehairs Frank Tackx Micky Beauchard Olivier Struyf Eric Gribsholt Britta Van Cleemput Oswald Meire Patrick |
| |
| Institution: | 1. Ecosystem Management Research Group, Department of Biology, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium;2. Department of Analytical Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium;3. Laboratoire d''écologie fonctionnelle (EcoLab), UMR 5245 (CNRS-UPS-INPT), 29 rue Jeanne Marvig31055, Toulouse cedex, France;4. Center for Estuarine and Marine Ecology, Netherlands Institute of Ecology, P.O. Box 140, 4400 AC Yerseke, Netherlands;5. Laboratory of Applied Physical Chemistry, Department of Applied Analytical and Physical Chemistry, Ghent University, Coupure Links 653, B-9000 Gent, Belgium |
| |
| 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. |
| |
| Keywords: | Scheldt estuary mass balance tidal freshwater marsh silica nutrient cycles suspended particulate matter |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
