Articles | Volume 21, issue 10
https://doi.org/10.5194/hess-21-5243-2017
https://doi.org/10.5194/hess-21-5243-2017
Research article
 | 
18 Oct 2017
Research article |  | 18 Oct 2017

Pesticide fate on catchment scale: conceptual modelling of stream CSIA data

Stefanie R. Lutz, Ype van der Velde, Omniea F. Elsayed, Gwenaël Imfeld, Marie Lefrancq, Sylvain Payraudeau, and Boris M. van Breukelen

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Latest update: 28 Mar 2024
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Short summary
This study presents concentration and carbon isotope data of two herbicides from a small agricultural catchment. Herbicide concentrations at the catchment outlet were highest after intense rainfall events. The isotope data indicated herbicide degradation within 2 months after application. The system was modelled with a conceptual mathematical model using the transport formulation by travel-time distributions, which allowed testing of various assumptions of pesticide transport and degradation.