Next Article in Journal
Effects of Packing Media and the Insertion of Vegetation on the Performance of Biological Trickling Filters
Next Article in Special Issue
Hydro-Energy Suitability of Rivers Regarding Their Hydrological and Hydrogeological Characteristics
Previous Article in Journal
Hydraulic Jump: A Brief History and Research Challenges
Previous Article in Special Issue
Spatiotemporal Dynamics of Water Body Changes and Their Influencing Factors in the Seasonal Lakes of the Poyang Lake Region
Article

Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors

1
Laboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, France
2
LTSER Zone Atelier Pyrénées-Garonne, CNRS, University of Toulouse, 31326 Castanet Tolosan, France
3
LTER Bassin versant Auradé, IR OZCAR, CNRS, University of Toulouse, 31326 Castanet Tolosan, France
*
Authors to whom correspondence should be addressed.
Academic Editor: George Arhonditsis
Water 2021, 13(13), 1734; https://doi.org/10.3390/w13131734
Received: 27 May 2021 / Revised: 17 June 2021 / Accepted: 18 June 2021 / Published: 23 June 2021
(This article belongs to the Special Issue Water and the Ecosphere in the Anthropocene)
In agricultural areas, ponds are suitable wetland environments to dissipate and reduce the occurrence of pesticides in aquatic environments. However, their impact at a catchment scale is still poorly understood. This study aims to determine how these organic contaminants were trapped in a pond located in an agricultural critical zone from SW France (Auradé catchment). The spatial distribution of pesticide concentrations and their different controlling factors were investigated in waters and sediments collected during two distinct seasons. The results highlighted (i) the link between the presence of the molecules and the agricultural practices upstream, (ii) the influence of hydrological/seasonal conditions, especially on hydrophobic molecule accumulation such as tebuconazole, (iii) the key role of clay content in sediments on the control of moderately hydrophilic pesticides (metolachlor and boscalid), but also the unexpected role of coarse particles for boscalid; and (iv) the influence of sediment depth on pesticide storage. Nevertheless, other physico-chemical parameters, such as mineralogical composition of sediment, needed to be considered to explain the pesticide patterns. This study brings a new hypothesis to be investigated in the future about pesticide behaviour in such pond environments. View Full-Text
Keywords: metolachlor; tebuconazole; boscalid; bottom sediments; spatial distribution; seasonality effect; sorption; particle size; partition coefficients metolachlor; tebuconazole; boscalid; bottom sediments; spatial distribution; seasonality effect; sorption; particle size; partition coefficients
Show Figures

Figure 1

MDPI and ACS Style

Chaumet, B.; Probst, J.-L.; Eon, P.; Camboulive, T.; Riboul, D.; Payré-Suc, V.; Granouillac, F.; Probst, A. Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors. Water 2021, 13, 1734. https://doi.org/10.3390/w13131734

AMA Style

Chaumet B, Probst J-L, Eon P, Camboulive T, Riboul D, Payré-Suc V, Granouillac F, Probst A. Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors. Water. 2021; 13(13):1734. https://doi.org/10.3390/w13131734

Chicago/Turabian Style

Chaumet, Betty, Jean-Luc Probst, Pierre Eon, Thierry Camboulive, David Riboul, Virginie Payré-Suc, Franck Granouillac, and Anne Probst. 2021. "Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors" Water 13, no. 13: 1734. https://doi.org/10.3390/w13131734

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop