FN Archimer Export Format
PT J
TI Evaluating pesticide mixture risks in French Mediterranean coastal lagoons waters
BT 
AF Munaron, Dominique
   Mérigot, Bastien
   Derolez, Valerie
   Tapie, Nathalie
   Budzinski, Hélène
   Fiandrino, Annie
AS 1:1;2:1,3;3:1;4:2;5:2;6:1;
FF 1:PDG-ODE-LITTORAL-LERLR;2:;3:PDG-ODE-LITTORAL-LERLR;4:;5:;6:PDG-ODE;
C1 MARBEC, Ifremer, Univ Montpellier, CNRS, IRD, Sète, France
   Univ Bordeaux, EPOC, F-33400 Talence, France
   MARBEC, Ifremer, Univ Montpellier, CNRS, IRD, Sète, France
C2 IFREMER, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV MONTPELLIER, FRANCE
SI SETE
   TOULON
SE PDG-ODE-LITTORAL-LERLR
   PDG-ODE
UM MARBEC
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 9.8
TC 7
UR https://archimer.ifremer.fr/doc/00813/92505/98750.pdf
LA English
DT Article
DE ;POCIS;Thau Lagoon;Or Lagoon;Water Framework Directive;Environmental risk assessment;Phytopharmaceuticals
AB To assess the risk of pesticide mixtures in lagoon waters, this study adopted a multi-step approach using integrative passive samplers (POCIS) and concentration addition (CA) toxicological models. Two French Mediterranean lagoons (Thau and Or) were monitored for a range of 68 pesticides continuously over a period of a year (2015–16). The findings revealed mixtures of dissolved pesticides with varying composition and levels over the year. The Or site contained more pesticides than Thau site (37 vs 28 different substances), at higher concentrations (0.1–58.6 ng.L−1 at Or vs <0.1–9.9 at Thau) and with overall higher detection frequencies. All samples showed a potential chronic toxicity risk, depending on the composition and concentrations of co-occurring pesticides. In 74 % of the samples, this pesticide risk was driven by a few single substances (ametryn, atrazine, azoxystrobin, carbendazim, chlorotoluron, irgarol, diuron and metolachlor) and certain transformation products (e.g. DPMU and metolachlor OA/ESA). Individually, these were a threat for the three taxa studied (phytoplankton, crustaceans and fish). Yet even a drastic reduction of these drivers alone (up to 5 % of their current concentration) would not eliminate the toxicity risks in 56 % of the Or Lagoon samples, due to pesticide mixtures. The two CA-based approaches used to assess the combined effect of these mixtures, determined chronic potential negative impacts for both lagoons, while no acute risk was highlighted. This risk was seasonal, indicating the importance of monitoring in key periods (summer, winter and spring) to get a more realistic picture of the pesticide threat in lagoon waters. These findings suggest that it is crucial to review the current EU Water Framework Directive's risk-assessment method, as it may incorrectly determine pesticide risk in lagoons. 
PY 2023
PD APR
SO Science Of The Total Environment
SN 0048-9697
PU Elsevier BV
VL 867
UT 000961136100001
DI 10.1016/j.scitotenv.2022.161303
ID 92505
ER

EF