FN Archimer Export Format PT J TI Assessment of Ba/Ca in Arctica islandica shells as a proxy for phytoplankton dynamics in the Northwestern Atlantic Ocean BT AF Doré, Justine Chaillou, Gwénaelle Poitevin, Pierre LAZURE, Pascal Poirier, André CHAUVAUD, Laurent Archambault, Philippe Thébault, Julien AS 1:1;2:2;3:1;4:3;5:4;6:6;7:5;8:1; FF 1:;2:;3:;4:PDG-ODE-LOPS-OC;5:;6:;7:;8:; C1 Univ Brest, CNRS, IRD, Ifremer, LEMAR, Plouzané, France Canada Research Chair in Geochemistry of Coastal Hydrogeosystems, Québec-Océan, ISMER, UQAR, Rimouski, Canada Ifremer, Univ Brest, CNRS, IRD, LEMAR, Plouzané, France GEOTOP and Département des Sciences de la Terre et de l'atmosphère, UQAM, Montréal, Canada Québec Océan, Département de Biologie, Université Laval, Québec, QC, Canada Univ Brest, CNRS, IRD, Ifremer, LEMAR, Plouzané, France C2 UBO, FRANCE UNIV QUEBEC (UQAR-ISMER), CANADA IFREMER, FRANCE UNIV QUEBEC (UQAM-GEOTOP), CANADA UNIV LAVAL, CANADA CNRS, FRANCE SI BREST SE PDG-ODE-LOPS-OC UM LOPS LEMAR IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-univ-france copubli-int-hors-europe IF 2.929 TC 14 UR https://archimer.ifremer.fr/doc/00607/71881/70576.pdf LA English DT Article DE ;A. islandica;Ba/Ca;Master chronology;Cross-dating;Chlorophyll a;Northwestern Atlantic AB Despite its major role as a global climate regulator, little is known about the recent evolution of the North Atlantic Ocean, especially prior to the fifties, principally because of the lack of long-term instrumental data. Moreover, the North Atlantic Ocean is undergoing rapid changes at the physical scale leading to modifications at the biological scale increasing interest to monitor the environment. The phytoplankton is the base of the ocean life and its perturbation can lead to further changes in the food chain. Recording its dynamics implies to observe both its spatial and temporal variations. This study brings forward the use of the Ba/Ca ratio from shells of the long-living bivalve Arctica islandica collected in the Northwestern Atlantic Ocean near Saint-Pierre and Miquelon (SPM) as a recorder of the past and present phytoplankton dynamics. A high inter and intra-reproducibility and synchrony between Ba/Cashell profiles were demonstrated allowing the reconstruction of a 124 years annually-resolved Ba/Cashell master chronology (from 1893 to 2016). This master chronology was positively correlated to the surface chlorophyll a measured by satellite sensor at regional (around SPM) and global scales (Northwestern Atlantic). PY 2020 PD MAY SO Estuarine Coastal And Shelf Science SN 0272-7714 PU Elsevier BV VL 237 UT 000527916600002 DI 10.1016/j.ecss.2020.106628 ID 71881 ER EF