Organic matter transport across a macrotidal estuary gradient: the Seine estuary, France
Texier, H.; Lafite, R.; Dupont, J.-P.; Firmin, V.; Gadel, F.; Serve, L.; Charriere, B. (1993). Organic matter transport across a macrotidal estuary gradient: the Seine estuary, France. Neth. J. Aquat. Ecol. 27(2-4): 405-413. https://dx.doi.org/10.1007/BF02334802 In: Netherlands Journal of Aquatic Ecology. Kluwer Academic Publishers/Netherlands Society of Aquatic Ecology: Bilthoven. ISSN 1380-8427; e-ISSN 2214-7098, more Also appears in:Meire, P.; Vincx, M. (Ed.) (1993). Marine and estuarine gradients: ECSA 21: Proceedings of the 21st symposium of the Estuarine and Coastal Sciences Association held in Gent, 9-14 september 1991. Netherlands Journal of Aquatic Ecology, 27(2-4). Netherlands Society of Aquatic Ecology: Bilthoven. 496 pp., more |  |
| Keywords | Gradients > Salinity gradients
Motion > Water motion > Circulation > Water circulation > Shelf dynamics > Estuarine dynamics
Organic matter
Organic matter > Dissolved organic matter
Organic matter > Particulates > Particulate organic matter
Physics > Mechanics > Fluid mechanics > Hydrodynamics
Pollution > Water pollution
Properties > Chemical properties > Salinity
Properties > Physical properties > Turbidity
Transport processes
Water bodies > Coastal waters > Coastal landforms > Coastal inlets > Estuaries
ANE, France, Haute-Normandie, Seine Bay [Marine Regions]
Marine/Coastal; Brackish water |
| Authors | | Top | - Texier, H.
- Lafite, R.
- Dupont, J.-P.
- Firmin, V.
| - Gadel, F.
- Serve, L.
- Charriere, B.
| |
| Abstract | The macrotidal Seine estuary receives mineral and organic fluxes from a strongly industrialized basin. Upstream-downstream analysis of POC, polysaccharides and phenolic compounds in the particulate fraction indicated clearly the continental inflow. Within the maximum turbidity zone, the organic matter/ suspended particulate matter ratio is lower than elsewhere which results from the dilution effect. Particulate tracers were quantified using grain size analysis and S.E.M. techniques. These sedimentary data defined the ratio of marine to continental particulate flux and mechanisms controlling the suspended particulate matter load within the estuarine mixing zone (resuspension, frontal enrichment and turbulent mixing processes). Organic parameters confirm the data on the mineral matter and were used to distinguish between the marine and continental inputs, from the upstream and downstream samples. Between the two endmembers, variations in organic parameters were controlled mainly by the hydrodynamics in the estuarine zone, rather than by salinity changes. |
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