FN Archimer Export Format PT J TI Characterizing the surface microlayer in the Mediterranean Sea: trace metal concentrations and microbial plankton abundance BT AF TOVAR-SANCHEZ, Antonio RODRIGUEZ-ROMERO, Araceli ENGEL, Anja ZANCKER, Birthe FU, Franck MARANON, Emilio PEREZ-LORENZO, Maria BRESSAC, Matthieu WAGENER, Thibault DESBOEUFS, Karine TRIQUET, Sylvain SIOUR, Guillaume GUIEU, Cécile AS 1:1;2:1;3:2;4:2;5:3;6:4;7:4;8:5,6;9:7;10:3;11:3;12:3;13:7; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:; C1 Department of Ecology and Coastal Management, Institute of Marine Sciences of Andalusia (ICMAN-CSIC), Puerto Real, 07190, Spain Leibniz Institute of Marine Sciences (IFM-GEOMAR), Kiel, Germany Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), CNRS UMR 7583, Université de Paris, Université Paris-Est-Créteil, Institut Pierre Simon Laplace (IPSL), Créteil, 94000, France Departamento de Ecología y Biología Animal, Universidad de Vigo, 36310 Vigo, Spain Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia Sorbonne Université, CNRS, Laboratoire d’Océanographie de Villefranche, LOV, F-06230, Villefranche-sur-mer, France Aix Marseille Univ., CNRS, IRD, Universitéde Toulon, MIO UM 110, 13288, Marseille, France C2 ICMAN CSIC, SPAIN IFM GEOMAR, GERMANY UNIV PARIS EST, FRANCE UNIV VIGO, SPAIN UNIV TASMANIA, AUSTRALIA UNIV PARIS 06, FRANCE UNIV AIX MARSEILLE, FRANCE TC 0 UR https://archimer.ifremer.fr/doc/00590/70254/68302.pdf https://archimer.ifremer.fr/doc/00590/70254/68303.pdf https://archimer.ifremer.fr/doc/00590/70254/73584.pdf https://archimer.ifremer.fr/doc/00590/70254/73585.pdf LA English DT Article CR PEACETIME BO Pourquoi pas ? AB The Sea Surface Microlayer (SML) is known to be enriched in trace metals relative to the underlaying water and to harbor diverse microbial communities (i.e. neuston). However, the processes linking metals and biota in the SML are not yet fully understood. In this study, we analyzed the metal (Cd, Co, Cu, Fe, Ni, Mo, V, Zn and Pb) concentrations in aerosol samples, SML (dissolved and total fractions) and in subsurface waters (SSW; dissolved fraction at ~ 1 m depth) from the Western Mediterranean Sea during a cruise in May–June 2017. The bacterial community composition and abundance in the SML and SSW, and the primary production and Chl-a in the SSW were measured simultaneously at all stations during the cruise. Residence times of particulate metals derived from aerosols deposition ranged from a couple of minutes for Co (2.7 ± 0.9 min; more affected by wind conditions) to a few hours for Cu (3.0 ± 1.9 h). Concentration of most dissolved metals in both, the SML and SSW, were well correlated with the salinity gradient and showed the characteristic eastward increase in surface waters of the Mediterranean Sea (MS). Contrarily, the total fraction of some reactive metals in the SML (i.e. Cu, Fe, Pb and Zn) showed negative trends with salinity, these trends of concentrations seem to be associate to microbial uptake. Our results suggest a toxic effect of Ni on neuston and microbiology community’s abundance of the top meter of the surface waters of the Western Mediterranean Sea. PY 2020 SO Biogeosciences SN 1726-4189 PU Copernicus GmbH VL 17 IS 8 DI 10.5194/bg-2019-290 ID 70254 ER EF