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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Monitoring and modeling pesticide dynamics in surface water at the catchment-scale: a review Holvoet, K.; Seuntjens, P.; Van Griensven, A.; Vanrolleghem, P.A. [s.d.]. Monitoring and modeling pesticide dynamics in surface water at the catchment-scale: a review, in: [s.d.] Proceedings of the 13th Symposium in Pesticide Chemistry, Piacenza, Italy, 3-6 September 2007. pp. accepted for publication In: (S.d.). Proceedings of the 13th Symposium in Pesticide Chemistry, Piacenza, Italy, 3-6 September 2007. [S.n.]: [s.l.]. , meer

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Non-open access 121886 [ aanvragen ]
Documenttype: Congresbijdrage

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Trefwoorden

Modelling Monitoring Pesticides Physics > Mechanics > Dynamics Water > Surface water

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Auteurs		Top
Holvoet, K., meer Seuntjens, P., meer Van Griensven, A., meer Vanrolleghem, P.A., meer

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Abstract

Fast flow processes determine the occurrence and dynamics of pesticides in river systems at the catchment-scale. Fast flow and transport of pesticides to rivers can be attributed to macroporous flow in tile-drained fields and surface runoff in sloped areas, but also due to point sources such as urban drainage, effluents of waste water treatment plants, and bad agricultural practices. We reviewed the state-of-the-art in monitoring and modeling pesticide dynamics in surface water at the catchment scale. The review focused on fast flow processes in the field determining the pattern and amplitude of pesticide concentrations in the rivers. We demonstrate the dynamics of pesticides in two Belgian river catchments of varying size. We continuously monitored eight pesticides (atrazine, carbendazim, chloridazon, diuron, isoproturon, lenacil and simazine) in surface water during spring application. The surface water showed hourly variations in pesticide concentrations. To identify the operative processes at the catchment scale, we used the SWAT model to predict river flow and pesticide dynamics at the catchment outlet. The observations and simulations clearly demonstrate the importance of point sources

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