Articles | Volume 25, issue 2
https://doi.org/10.5194/hess-25-497-2021
https://doi.org/10.5194/hess-25-497-2021
Research article
 | 
02 Feb 2021
Research article |  | 02 Feb 2021

Pesticide peak concentration reduction in a small vegetated treatment system controlled by chemograph shape

Jan Greiwe, Oliver Olsson, Klaus Kümmerer, and Jens Lange

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Cited articles

Beketov, M. A., Kefford, B. J., Schäfer, R. B., and Liess, M.: Pesticides reduce regional biodiversity of stream invertebrates, P. Natl. Acad. Sci. USA, 110, 11039–11043, https://doi.org/10.1073/pnas.1305618110, 2013. 
Bos, M. G.: Discharge measurement structures, International Institute for Land Reclamation and Improvement, Wageningen, the Netherlands, 1989. 
Bundschuh, M., Elsaesser, D., Stang, C., and Schulz, R.: Mitigation of fungicide pollution in detention ponds and vegetated ditches within a vine-growing area in Germany, Ecol. Eng., 89, 121–130, https://doi.org/10.1016/j.ecoleng.2015.12.015, 2016. 
Doppler, T., Camenzuli, L., Hirzel, G., Krauss, M., Lück, A., and Stamm, C.: Spatial variability of herbicide mobilisation and transport at catchment scale: insights from a field experiment, Hydrol. Earth Syst. Sci., 16, 1947–1967, https://doi.org/10.5194/hess-16-1947-2012, 2012. 
Doppler, T., Lück, A., Camenzuli, L., Krauss, M., and Stamm, C.: Critical source areas for herbicides can change location depending on rain events, Agr. Ecosyst. Environ., 192, 85–94, https://doi.org/10.1016/j.agee.2014.04.003, 2014. 
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Short summary
We investigated the linkage between contaminant mobilization in catchments and their mitigation in vegetated treatment systems (VTSs). We identified different patterns in chemographs recorded at the inlet of a VTS, indicating distinct mobilization patterns that were associated with similar source areas, transport pathways, and discharge dynamics. Peak concentration reduction in the VTS was strongest for sharp-peaked chemographs, suggesting that dispersion was the principle mitigation process.