FN Archimer Export Format PT J TI Climate Variability and Oceanographic Settings Associated with Interannual Variability in the Initiation of Dinophysis acuminata Blooms BT AF DIAZ, Patricio A. REGUERA, Beatriz RUIZ-VILLARREAL, Manuel PAZOS, Yolanda VELO-SUAREZ, Lourdes BERGER, Henrick SOURISSEAU, Marc AS 1:1;2:1;3:2;4:3;5:4;6:4;7:4; FF 1:;2:;3:;4:;5:PDG-ODE-DYNECO-PELAGOS;6:PDG-ODE-DYNECO-PELAGOS;7:PDG-ODE-DYNECO-PELAGOS; C1 Spanish Inst Oceanog IEO, Oceanog Ctr Vigo, Vigo 36390, Spain. Spanish Inst Oceanog IEO, Oceanog Ctr A Coruna, La Coruna 15001, Spain. Technol Ctr Control Marine Environm Galicia INTEC, Vilagarcia De Arousa 36611, Pontevedra, Spain. French Res Inst Exploitat Sea IFREMER, Ctr Brest, F-29280 Plouzane, France. C2 IEO, SPAIN IEO, SPAIN INTECMAR, SPAIN IFREMER, FRANCE SI BREST SE PDG-ODE-DYNECO-PELAGOS IN WOS Ifremer jusqu'en 2018 copubli-europe IF 3.512 TC 35 UR https://archimer.ifremer.fr/doc/00180/29157/27554.pdf LA English DT Article DE ;Dinophysis acuminata;climate variability;upwelling patterns;river plumes;exceptional algal blooms;predictive models AB In 2012, there were exceptional blooms of D. acuminata in early spring in what appeared to be a mesoscale event affecting Western Iberia and the Bay of Biscay. The objective of this work was to identify common climatic patterns to explain the observed anomalies in two important aquaculture sites, the Galician R as Baixas (NW Spain) and Arcachon Bay (SW France). Here, we examine climate variability through physical-biological couplings, Sea Surface Temperature (SST) anomalies and time of initiation of the upwelling season and its intensity over several decades. In 2012, the mesoscale features common to the two sites were positive anomalies in SST and unusual wind patterns. These led to an atypical predominance of upwelling in winter in the Galician R as, and increased haline stratification associated with a southward advection of the Gironde plume in Arcachon Bay. Both scenarios promoted an early phytoplankton growth season and increased stability that enhanced D. acuminata growth. Therefore, a common climate anomaly caused exceptional blooms of D. acuminata in two distant regions through different triggering mechanisms. These results increase our capability to predict intense diarrhetic shellfish poisoning outbreaks in the early spring from observations in the preceding winter. PY 2013 PD AUG SO Marine Drugs SN 1660-3397 PU Mdpi Ag VL 11 IS 8 UT 000330521300018 BP 2964 EP 2981 DI 10.3390/md11082964 ID 29157 ER EF