FN Archimer Export Format PT J TI Flux dynamics of planktic foraminiferal tests in the south-eastern Bay of Biscay (northeast Atlantic margin) BT AF KUHNT, Tanja HOWA, Helene SCHMIDT, Sabine MARIE, Louis SCHIEBEL, Ralf AS 1:1;2:1;3:2;4:3;5:1; FF 1:;2:;3:;4:PDG-ODE-LPO;5:; C1 Univ Angers, UPRES EA 2644, Lab Recent & Fossil Bioindicators BIAF, F-49045 Angers, France. CNRS, UMR 5805, EPOC, F-33405 Talence, France. IFREMER, LPO, UMR 6523, CNRS,IRD,UBO, F-29280 Plouzane, France. C2 UNIV ANGERS, FRANCE CNRS, FRANCE IFREMER, FRANCE SI BREST SE PDG-ODE-LPO IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 2.476 TC 15 UR https://archimer.ifremer.fr/doc/00125/23593/21431.pdf https://archimer.ifremer.fr/doc/00125/23593/21785.pdf LA English DT Article CR PECH1 PECH10 PECH2-3 PECH4 PECH5 PECH6 PECH8 PECH9 BO CĂ´tes De La Manche DE ;Planktic foraminifera;Bay of Biscay;Sediment traps;Particulate mass flux;Pb-210;Seasonality;Lateral advection AB The temporal and water depth related dynamics of planktic foraminiferal fluxes in the south-eastern Bay of Biscay are discussed for a two year sampling period (June 2006-June 2008). Two sediment traps deployed at 800 m and 1700 m water depth at a mooring in 2000 m of water depth, were analyzed for the flux of planktic foraminiferal species >150 mu m, in comparison with the total mass flux. Total flux of planktic foraminifera shows seasonal maxima in spring/early summer (>2000 Ind.m(-2) d(-1)) and minima from late summer through winter (<10 Ind.m(-2) d(-1)). The flux of planktic foraminiferal tests in the intermediate to deep water column at the inner Bay of Biscay comprises an intermittent and regionally variable signal of seasonal surface water primary productivity. Significant lateral transport and flux of particles superimposed on the downward mass flux indicate a decoupling of fluxes between the 800-m and 1700-m traps. The Pb-210 budget and the presence of certain benthic foraminiferal species in the midwater column prove that the lateral flux originated from the upper continental slope. Despite the temporal and vertical variations of the particulate flux, a well-defined seasonal flux signal can be deduced from the frequency of planktic foraminiferal species. (C) 2011 Elsevier B.V. All rights reserved. PY 2013 PD JAN SO Journal Of Marine Systems SN 0924-7963 PU Elsevier Science Bv VL 109 UT 000314427500013 DI 10.1016/j.jmarsys.2011.11.026 ID 23593 ER EF