Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord

Diarrhetic shellfish poisoning (DSP) toxins and pectenotoxins (PTXs) produced by endemic species of Dinophysis, mainly D. acuta and D. acuminata, threaten public health and negatively impact the shellfish industry worldwide. Despite their socioeconomic impact, research on the environmental drivers o...

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Autores: Díaz, Patricio A., Pérez-Santos, Iván, Baldrich, Ángela, Álvarez, Gonzalo, Schwerter, Camila, Araya, Michael, Aravena, Álvaro, Cantarero, Bárbara, Carbonell, Pamela, Díaz, Manuel, Godoy, Humberto, Reguera, Beatriz
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/369091
Acesso em linha:http://hdl.handle.net/10261/369091
Access Level:acceso abierto
Palavra-chave:Dinophysis acuta
Physical–biological interactions
Fine-scale structure
In situ division rates
Chilean fjord J.
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spelling Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean FjordDíaz, Patricio A.Pérez-Santos, IvánBaldrich, ÁngelaÁlvarez, GonzaloSchwerter, CamilaAraya, MichaelAravena, ÁlvaroCantarero, BárbaraCarbonell, PamelaDíaz, ManuelGodoy, HumbertoReguera, BeatrizDinophysis acutaPhysical–biological interactionsFine-scale structureIn situ division ratesChilean fjord J.Diarrhetic shellfish poisoning (DSP) toxins and pectenotoxins (PTXs) produced by endemic species of Dinophysis, mainly D. acuta and D. acuminata, threaten public health and negatively impact the shellfish industry worldwide. Despite their socioeconomic impact, research on the environmental drivers of DSP outbreaks in the Chilean fjords is scanty. From 22 to 24 March 2017, high spatial–temporal resolution measurements taken in Puyuhuapi Fjord (Northern Patagonia) illustrated the short-term (hours, days) response of the main phytoplankton functional groups (diatoms and dinoflagellates including toxic Dinophysis species) to changes in water column structure. Results presented here highlight the almost instantaneous coupling between time–depth variation in density gradients, vertical shifts of the subsurface chlorophyll maximum, and its evolution to a buoyancy-driven thin layer (TL) of diatoms just below the pycnocline the first day. A second shallower TL of dinoflagellates, including Dinophysis acuta, was formed on the second day in a lowturbulence lens in the upper part of the pycnocline, co-occurring with the TL of diatoms. Estimates of in situ division rates of Dinophysis showed a moderate growth maximum, which did not coincide with the cell density max. This suggests that increased cell numbers resulted from cell entrainment of off-fjord populations combined with in situ growth. Toxin profiles of the net tow analyses mirrored the dominance of D. acuminata/D. acuta at the beginning/end of the sampling period. This paper provides information about biophysical interactions of phytoplankton, with a focus on Dinophysis species in a strongly stratified Patagonian fjord. Understanding these interactions is crucial to improv predictive models and early warning systems for toxic HABs in stratified systemsPatricio A. Díaz was funded by the ANID-FONDECYT 1231220 and by the Centre for Biotechnology and Bioengineering (CeBiB) (PIA project FB0001, ANID, Chile), both from the Chilean National Agency for Research and Development (ANID). Iván Pérez-Santos was funded by COPAS Sur-Austral (ANID AFB170006), COPAS COASTAL (ANID FB210021), CIEP R20F002, and FONDECYT 1211037, and Beatriz Reguera was funded by EU-Interreg Atlantic Area project PRIMROSE (EAPA_182/2016) and National Spanish BIOTOX (PID2021-125643OB-C22; MICINN)Peer reviewedMultidisciplinary Digital Publishing InstituteAgencia Nacional de Investigación y Desarrollo (Chile)Centro de Biotecnología y Bioingeniería (Chile)European CommissionInterreg Atlantic AreaMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/369091reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125643OB-C22The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3390/jmse12101716https://doi.org/10.3390/jmse12101716Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3690912026-05-22T06:33:51Z
dc.title.none.fl_str_mv Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
title Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
spellingShingle Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
Díaz, Patricio A.
Dinophysis acuta
Physical–biological interactions
Fine-scale structure
In situ division rates
Chilean fjord J.
title_short Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
title_full Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
title_fullStr Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
title_full_unstemmed Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
title_sort Small-Scale Biophysical Interactions and Dinophysis Blooms: Case Study in a Strongly Stratified Chilean Fjord
dc.creator.none.fl_str_mv Díaz, Patricio A.
Pérez-Santos, Iván
Baldrich, Ángela
Álvarez, Gonzalo
Schwerter, Camila
Araya, Michael
Aravena, Álvaro
Cantarero, Bárbara
Carbonell, Pamela
Díaz, Manuel
Godoy, Humberto
Reguera, Beatriz
author Díaz, Patricio A.
author_facet Díaz, Patricio A.
Pérez-Santos, Iván
Baldrich, Ángela
Álvarez, Gonzalo
Schwerter, Camila
Araya, Michael
Aravena, Álvaro
Cantarero, Bárbara
Carbonell, Pamela
Díaz, Manuel
Godoy, Humberto
Reguera, Beatriz
author_role author
author2 Pérez-Santos, Iván
Baldrich, Ángela
Álvarez, Gonzalo
Schwerter, Camila
Araya, Michael
Aravena, Álvaro
Cantarero, Bárbara
Carbonell, Pamela
Díaz, Manuel
Godoy, Humberto
Reguera, Beatriz
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Nacional de Investigación y Desarrollo (Chile)
Centro de Biotecnología y Bioingeniería (Chile)
European Commission
Interreg Atlantic Area
Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dinophysis acuta
Physical–biological interactions
Fine-scale structure
In situ division rates
Chilean fjord J.
topic Dinophysis acuta
Physical–biological interactions
Fine-scale structure
In situ division rates
Chilean fjord J.
description Diarrhetic shellfish poisoning (DSP) toxins and pectenotoxins (PTXs) produced by endemic species of Dinophysis, mainly D. acuta and D. acuminata, threaten public health and negatively impact the shellfish industry worldwide. Despite their socioeconomic impact, research on the environmental drivers of DSP outbreaks in the Chilean fjords is scanty. From 22 to 24 March 2017, high spatial–temporal resolution measurements taken in Puyuhuapi Fjord (Northern Patagonia) illustrated the short-term (hours, days) response of the main phytoplankton functional groups (diatoms and dinoflagellates including toxic Dinophysis species) to changes in water column structure. Results presented here highlight the almost instantaneous coupling between time–depth variation in density gradients, vertical shifts of the subsurface chlorophyll maximum, and its evolution to a buoyancy-driven thin layer (TL) of diatoms just below the pycnocline the first day. A second shallower TL of dinoflagellates, including Dinophysis acuta, was formed on the second day in a lowturbulence lens in the upper part of the pycnocline, co-occurring with the TL of diatoms. Estimates of in situ division rates of Dinophysis showed a moderate growth maximum, which did not coincide with the cell density max. This suggests that increased cell numbers resulted from cell entrainment of off-fjord populations combined with in situ growth. Toxin profiles of the net tow analyses mirrored the dominance of D. acuminata/D. acuta at the beginning/end of the sampling period. This paper provides information about biophysical interactions of phytoplankton, with a focus on Dinophysis species in a strongly stratified Patagonian fjord. Understanding these interactions is crucial to improv predictive models and early warning systems for toxic HABs in stratified systems
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/369091
url http://hdl.handle.net/10261/369091
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125643OB-C22
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3390/jmse12101716
https://doi.org/10.3390/jmse12101716
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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