FN Archimer Export Format PT J TI The 2016 red tide crisis in southern Chile: Possible influence of the mass oceanic dumping of dead salmons BT AF Armijo, Julien Oerder, Vera Auger, Pierre-Amaël Bravo, Angela Molina, Ernesto AS 1:1,2;2:3;3:3,4;4:5;5:6; FF 1:;2:;3:;4:;5:; C1 Pontificia Universidad Católica de Chile, Santiago, Chile Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Santiago, Chile Instituto Milenio de Oceanografía and Escuela de Ciencias del Mar, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile Laboratoire d’Océanographie Physique et Spatiale, Université de Brest, CNRS, IRD, Ifremer, Brest, France Universidad de Chile, Santiago, Chile Universidad de Santiago, Santiago, Chile C2 UNIV PONTIFICIA CATOLICA CHILE, CHILE UNIV BERNARDO O'HIGGINS, CHILE UNIV PONTIFICIA CATOLICA VALPARAISO, CHILE UBO, FRANCE UNIV CHILE, CHILE UNIV SANTIAGO, CHILE UM LOPS IN WOS Cotutelle UMR copubli-int-hors-europe IF 1.101 TC 31 UR https://archimer.ifremer.fr/doc/00593/70486/69183.pdf LA English DT Article DE ;Harmful algal blooms;Aquaculture;Pollution control;Ocean transport;Ecological crisis;Risk management AB In 2016, a massive harmful algal bloom (HAB) of Alexandrium catenella around Chiloé island caused one of the major socio-ecological crisis in Chilean history. This red tide occurred in two distinct pulses, the second, most anomalous, bursting with extreme toxicity on the Pacific coast, weeks after the highly controversial dumping off Chiloé of 4,700 t of rotting salmons, killed by a previous HAB of Pseudochattonella verruculosa. We study the transport of this pollution, analyzing the physical oceanographic conditions during and after the dumping. We find that a cyclonic gyre was present between the dumping site and the coast, visible in satellite altimetry and sea surface temperature data. Using Lagrangian simulations, we confirm that near-surface currents could have brought part of the pollution to the coast, and fueled the bloom. This scenario explains also the anomalous later finding of ammonium near Chiloé. Finally we discuss the mismanagement of risk throughout the events. PY 2020 PD JAN SO Marine Pollution Bulletin SN 0025-326X PU Elsevier BV VL 150 UT 000509611200048 DI 10.1016/j.marpolbul.2019.110603 ID 70486 ER EF