High-vertical resolution sampling reveals sharp Thin Layers of Toxic Phytoplankton in the Patagonian Fjords, Southern Chile

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Main Authors: Aravena, Álvaro, Díaz, Patricio A., Cantarero, Bárbara, Rantul, Rebeca, Altamirano, Robinson, Miranda, Carolina, Pérez-Santos, Iván, Álvarez, Gonzalo, Araya, Michael, Reguera, Beatriz
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Published: Zenodo 2025
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author Aravena, Álvaro
Díaz, Patricio A.
Cantarero, Bárbara
Rantul, Rebeca
Altamirano, Robinson
Miranda, Carolina
Pérez-Santos, Iván
Álvarez, Gonzalo
Araya, Michael
Reguera, Beatriz
author_facet Aravena, Álvaro
Díaz, Patricio A.
Cantarero, Bárbara
Rantul, Rebeca
Altamirano, Robinson
Miranda, Carolina
Pérez-Santos, Iván
Álvarez, Gonzalo
Araya, Michael
Reguera, Beatriz
contents <p><span>A study was conducted in the Puyuhuapi Fjord, southern Chile, to compare two sampling methods—conventional oceanographic bottles at two-metre intervals and a fine-scale sampling device—for characterising thin layers (TLs) of <em>Dinophysis acuminata</em> and <em>Dinophysis acuta</em> and their associated lipophilic toxins. The results obtained with the fine-scale sampler revealed significantly higher cell densities and toxin concentrations compared to conventional sampling. Moreover, the coincidence of maximum species and toxin abundances varied depending on the sampling method used. This study underscores the importance of high-resolution tools for revealing fine-scale distribution patterns of toxic species in strongly stratified systems such as Patagonian fjords.</span></p>
format Recurso digital
id zenodo_https___doi_org_10_5281_zenodo_15632560
institution Zenodo
language
publishDate 2025
publisher Zenodo
record_format zenodo
spellingShingle High-vertical resolution sampling reveals sharp Thin Layers of Toxic Phytoplankton in the Patagonian Fjords, Southern Chile
Aravena, Álvaro
Díaz, Patricio A.
Cantarero, Bárbara
Rantul, Rebeca
Altamirano, Robinson
Miranda, Carolina
Pérez-Santos, Iván
Álvarez, Gonzalo
Araya, Michael
Reguera, Beatriz
thin layers, Dinophysis acuta, Dinophysis acuminata, Chilean fjords, lipophilic toxins
<p><span>A study was conducted in the Puyuhuapi Fjord, southern Chile, to compare two sampling methods—conventional oceanographic bottles at two-metre intervals and a fine-scale sampling device—for characterising thin layers (TLs) of <em>Dinophysis acuminata</em> and <em>Dinophysis acuta</em> and their associated lipophilic toxins. The results obtained with the fine-scale sampler revealed significantly higher cell densities and toxin concentrations compared to conventional sampling. Moreover, the coincidence of maximum species and toxin abundances varied depending on the sampling method used. This study underscores the importance of high-resolution tools for revealing fine-scale distribution patterns of toxic species in strongly stratified systems such as Patagonian fjords.</span></p>
title High-vertical resolution sampling reveals sharp Thin Layers of Toxic Phytoplankton in the Patagonian Fjords, Southern Chile
topic thin layers, Dinophysis acuta, Dinophysis acuminata, Chilean fjords, lipophilic toxins
url https://doi.org/10.5281/zenodo.15632560