Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors
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 locat...
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MDPI AG
2021-06-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/13/1734 |
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| author | Betty Chaumet Jean-Luc Probst Pierre Eon Thierry Camboulive David Riboul Virginie Payré-Suc Franck Granouillac Anne Probst |
| author_facet | Betty Chaumet Jean-Luc Probst Pierre Eon Thierry Camboulive David Riboul Virginie Payré-Suc Franck Granouillac Anne Probst |
| author_sort | Betty Chaumet |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T10:08:08Z |
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| id | doaj.art-0c96b41d5967438bbedb60d583044a1b |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T10:08:08Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-0c96b41d5967438bbedb60d583044a1b2023-11-22T01:20:15ZengMDPI AGWater2073-44412021-06-011313173410.3390/w13131734Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling FactorsBetty Chaumet0Jean-Luc Probst1Pierre Eon2Thierry Camboulive3David Riboul4Virginie Payré-Suc5Franck Granouillac6Anne Probst7Laboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceLaboratory of Functional Ecology and Environment, University of Toulouse, CNRS, Auzeville Tolosane, 31326 Castanet Tolosan, FranceIn 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.https://www.mdpi.com/2073-4441/13/13/1734metolachlortebuconazoleboscalidbottom sedimentsspatial distributionseasonality effect |
| spellingShingle | Betty Chaumet Jean-Luc Probst Pierre Eon Thierry Camboulive David Riboul Virginie Payré-Suc Franck Granouillac Anne Probst Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors Water metolachlor tebuconazole boscalid bottom sediments spatial distribution seasonality effect |
| title | Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors |
| title_full | Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors |
| title_fullStr | Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors |
| title_full_unstemmed | Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors |
| title_short | Role of Pond Sediments for Trapping Pesticides in an Agricultural Catchment (Auradé, SW France): Distribution and Controlling Factors |
| title_sort | role of pond sediments for trapping pesticides in an agricultural catchment aurade sw france distribution and controlling factors |
| topic | metolachlor tebuconazole boscalid bottom sediments spatial distribution seasonality effect |
| url | https://www.mdpi.com/2073-4441/13/13/1734 |
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