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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, meer Ook verschenen 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., meer

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Trefwoorden

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] Marien/Kust; Brak water

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Auteurs		Top
Texier, H. Lafite, R. Dupont, J.-P. Firmin, V.	Gadel, F. Serve, L. Charriere, B.

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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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