FN Archimer Export Format PT J TI Impact of moderately energetic fine-scale dynamics on the phytoplankton community structure in the western Mediterranean Sea BT AF Tzortzis, Roxane Doglioli, Andrea M Barrillon, Stéphanie Petrenko, Anne A D'Ovidio, Francesco Izard, Lloyd Thyssen, Melilotus Pascual, Ananda Barcelo-Llull, Barbara CYR, Frédéric Tedetti, MArc BHAIRY, Nagib GARREAU, Pierre DUMAS, Franck Gregori, Gérald AS 1:1;2:1;3:1;4:1;5:2;6:2;7:1;8:3;9:3;10:4;11:1;12:1;13:5;14:6;15:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:PDG-ODE-LOPS-OC;14:;15:; C1 Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, Marseille, France Sorbonne Université, CNRS, IRD, MNHN, Laboratoire d’Océanographie et du Climat: Expérimentations et Approches Numériques (LOCEAN-IPSL), Paris, France MEDEA (CSIC-UIB), Instituto Mediterráneo de Estudios Avanzados, Esporles, Spain Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada, St. John’s, NL, Canada UMR 6523 CNRS, IFREMER, IRD, UBO, Laboratoire d’Océanographie Physique et Spatiale, Plouzané 29280, France SHOM, Service Hydrographique et Océanographique de la Marine, 13 rue de Chatellier, CS592803, 29228 Brest, CEDEX 2, France C2 UNIV AIX MARSEILLE, FRANCE UNIV SORBONNE, FRANCE CSIC, SPAIN MPO, CANADA IFREMER, FRANCE SHOM, FRANCE SI BREST SE PDG-ODE-LOPS-OC UM LOPS IN WOS Ifremer UMR DOAJ copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe IF 5.092 TC 5 UR https://archimer.ifremer.fr/doc/00683/79486/82078.pdf https://archimer.ifremer.fr/doc/00683/79486/90441.pdf LA English DT Article CR OSCAHR OUTPACE PROTEVSMED_SWOT_2018_LEG1 BO Téthys II L'Atalante Beautemps-Beaupré AB Model simulations and remote sensing observations show that ocean dynamics at fine scales (1–100 km in space, day–weeks in time) strongly influence the distribution of phytoplankton. However, only few in situ samplings have been performed and most of them in boundary currents which may not be representative of less energetic regions. The PROTEVSMED-SWOT cruise took place in the moderately energetic waters of the western Mediterranean Sea, in the southern region of the Balearic Islands. Taking advantage of near-real time satellite information, a sampling strategy was defined in order to cross a frontal zone separating different water masses. Multi-parametric in situ sensors mounted on the vessel, on a towed fish and on an ocean glider were used to sample at high spatial resolution both physical and biogeochemical variables. A particular attention was put in adapting the sampling route, in order to also estimate the vertical velocities in the frontal area. Such a strategy was successful in sampling quasi-synoptically an oceanic area characterized by the presence of a narrow front with an associated vertical circulation. A multiparametric statistical analysis of the collected data identifies two water masses characterized by different abundances of several phytoplankton cytometric functional groups, as well as different contents in chlorophyll a and O2. Our study shows that the Lagrangian fronts induced by the fine-scale circulation, even if much weaker than the fronts occurring in boundary current systems, maintain a strong structuring effect on phytoplankton community by segregating different taxa at the surface. PY 2021 PD DEC SO Biogeosciences SN 1726-4170 PU Copernicus GmbH VL 18 IS 24 UT 000731519300001 BP 6455 EP 6477 DI 10.5194/bg-18-6455-2021 ID 79486 ER EF