Biogeosciences
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Articles | Volume 22, issue 13
Articles | Volume 22, issue 13
https://doi.org/10.5194/bg-22-3397-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-3397-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 13
Research article
 | 
11 Jul 2025
Research article |  | 11 Jul 2025

Extraordinary bloom of toxin-producing phytoplankton enhanced by strong retention on the offshore Patagonian shelf

Valeria Ana Guinder, Urban Tillmann, Martin Rivarossa, Carola Ferronato, Fernando J. Ramírez, Bernd Krock, Haifeng Gu, and Martin Saraceno

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Short summary
An unusual survey involving two vessels in the Argentine Sea over a 10 d period enabled synoptic observations of a significant toxic phytoplankton bloom. Simultaneous species characterization of the bloom, along with measurements of surface currents and mesoscale fronts, provided insights into its retention. Interdisciplinary approaches shed light on the biophysical coupling that underlies the persistence and horizontal transport of harmful algal blooms in productive continental shelves.
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