Extreme harmful algal blooms, climate change, and potential risk of eutrophication in Patagonian fjords: Insights from an exceptional Heterosigma akashiwo fish-killing event

Jorge I. Mardones,Javier Paredes-Mella,Ana Flores-Leñero,Kyoko Yarimizu,Marcos Godoy,Osvaldo Artal,Andrea Corredor-Acosta,Lara Marcus,Emma Cascales,Juan Pablo Espinoza,Luis Norambuena,René D. Garreaud,Humberto E. González,José L. Iriarte

Progress in Oceanography（2022）

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摘要

•Climate change is contributing to HABs development and persistence in northern Patagonia.•Nutrient analysis suggests an important role of mixotrophy in HABs development in Chilean fjords.•Chilean H. akashiwo is only toxigenic at high cell densities.•Salmon mortality in 2021 was related to hypoxic conditions and not to cytotoxic effects.

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关键词

Salmon farming,Nutrients,Ichthyotoxicity,Fjord́s water renewal,Metabarcoding,Pigment signature

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