FN Archimer Export Format PT J TI Simulated conservative tracer as a proxy for S-metolachlor concentration predictions compared to POCIS measurements in Arcachon Bay BT AF FAUVELLE, Vincent BELLES, Angel BUDZINSKI, Helene MAZZELLA, Nicolas PLUS, Martin AS 1:1;2:2;3:3;4:4;5:5; FF 1:;2:;3:;4:;5:PDG-ODE-DYNECO-PELAGOS; C1 Univ Toulon & Var, Aix Marseille Univ, CNRS, IRD,MIO, Marseille, France. PSL Res Univ, MINES ParisTech, Geosci Ctr Geosci & Geoengn, 35 Rue St Honore, Fontainebleau, France. Univ Bordeaux, UMR EPOC CNRS 5805, LPTC, Talence, France. Irstea, UR EABX, 50 Ave Verdun, Cestas, France. IFREMER, Lab Ecol Pelag DYNECO PELAGOS, Plouzane, France. C2 UNIV TOULON, FRANCE MINES PARISTECH, FRANCE UNIV BORDEAUX, FRANCE IRSTEA, FRANCE IFREMER, FRANCE SI BREST SE PDG-ODE-DYNECO-PELAGOS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-univ-france IF 3.782 TC 10 UR https://archimer.ifremer.fr/doc/00445/55627/57334.pdf LA English DT Article DE ;Passive sampling;POCIS;Mars-2D;Contaminant;Monitoring;Coastal area;Pesticides;S-metolachlor AB The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the Bay, both in terms of concentration range and seasonal trends. Modeling thus offers a cost-effective solution for monitoring contaminants in transitional waters, overcoming in addition the technical limitations for measuring pg L−1 or lower levels in coastal waters. However, we highlighted that secondary sources may affect accuracy at local level. PY 2018 PD AUG SO Marine Pollution Bulletin SN 0025-326X PU Pergamon-elsevier Science Ltd VL 133 UT 000441853600043 BP 423 EP 427 DI 10.1016/j.marpolbul.2018.06.005 ID 55627 ER EF