Etude des apports en herbicides et en nutriments par la Charente : Modélisation de la dispersion de l'atrazine dans le bassin de Marennes-Oléron

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Éditeur(s) Université Pierre et Marie Curie Paris V
Identifiant documentaire 9-2266
Identifiant OAI oai:archimer.ifremer.fr:2266
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Auteur(s): Munaron, Dominique
Mots clés Atlantic coast Marennes Oléron Bay Modelisation Estuary Geochemistry behaviour Charente River Flux Nutrient Herbicide Littoral Atlantique Bassin de Marennes Oléron Modélisation Estuaire Comportement Géochimique Charente Flux Nutriments Herbicides
Date de publication 29/09/2004
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Droits de réutilisation info:eu-repo/semantics/openAccess

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Our study aims at making progress the estimate of herbicide and nutrient inputs to the Marennes-Oleron bay which could influence summer oysters mortalities, and to bring by modeling a better understanding of the dynamics of these compounds in the shellfish-farming area. The development of a strategy adapted to the Charente river and its estuary reveals that agricultural activity on the catchment area is omnipresent, as well on the level of the nitrogen and herbicides contributions. It is thus necessary to specify Charente fluxes, which is the main tributary of the Marennes-Oleron bay, in order to better characterize its impact on shellfishfarming activity. Use of a dispersion model will constitute an invaluable help in the risk assessment with respect to pesticides, by specifying periods of the high and low concentrations of these molecules and the biotope exposure durations.
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