Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia

Autores
Flores Melo, Elizabeth Ximena; Schloss, Irene Ruth; Chavanne, Cédric; Almandoz, Gastón Osvaldo; Latorre, Maite Pilmayquen; Ferreyra, Gustavo Adolfo
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Tidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the southern front in San Jorge Gulf (SJG), Argentina, during a spring-neap tidal cycle. Baroclinic instabilities influence the shape and position of the front and presumably play an important role in the horizontal transport across the front. The highest phytoplankton biomass concentrations were found in the waters of the stratified side of the front during neap tide, with picophytoplankton, cyanobacteria, and nanophyto-plankton being the main contributors to the total autotrophic biomass. Bacteria contribute the most to heterotrophic biomass. In contrast, during spring tide, the carbon contribution of microphytoplankton was higher than during neap tide. In the mixed side, cells photoacclimate to optimum light conditions, suggesting that cells near the surface, which are probably photoinhibited, and cells below the euphotic zone, which are light-limited, are quickly advected by turbulent vertical motions to depths with optimal irradiance conditions.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Argentine sea, San Jorge Gulf
Frontal areas
Phytoplankton
Stratification
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/100730
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/100730
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network_name_str SEDICI (UNLP)
spelling Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, PatagoniaFlores Melo, Elizabeth XimenaSchloss, Irene RuthChavanne, CédricAlmandoz, Gastón OsvaldoLatorre, Maite PilmayquenFerreyra, Gustavo AdolfoCiencias NaturalesArgentine sea, San Jorge GulfFrontal areasPhytoplanktonStratificationTidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the southern front in San Jorge Gulf (SJG), Argentina, during a spring-neap tidal cycle. Baroclinic instabilities influence the shape and position of the front and presumably play an important role in the horizontal transport across the front. The highest phytoplankton biomass concentrations were found in the waters of the stratified side of the front during neap tide, with picophytoplankton, cyanobacteria, and nanophyto-plankton being the main contributors to the total autotrophic biomass. Bacteria contribute the most to heterotrophic biomass. In contrast, during spring tide, the carbon contribution of microphytoplankton was higher than during neap tide. In the mixed side, cells photoacclimate to optimum light conditions, suggesting that cells near the surface, which are probably photoinhibited, and cells below the euphotic zone, which are light-limited, are quickly advected by turbulent vertical motions to depths with optimal irradiance conditions.Facultad de Ciencias Naturales y Museo2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf104-112http://sedici.unlp.edu.ar/handle/10915/100730enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/92119info:eu-repo/semantics/altIdentifier/url/https://tos.org/oceanography/article/phytoplankton-ecology-during-a-spring-neap-tidal-cycle-in-the-southern-tidainfo:eu-repo/semantics/altIdentifier/issn/1042-8275info:eu-repo/semantics/altIdentifier/doi/10.5670/oceanog.2018.412info:eu-repo/semantics/altIdentifier/hdl/11336/92119info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-17T10:03:39Zoai:sedici.unlp.edu.ar:10915/100730Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-17 10:03:39.788SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
title Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
spellingShingle Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
Flores Melo, Elizabeth Ximena
Ciencias Naturales
Argentine sea, San Jorge Gulf
Frontal areas
Phytoplankton
Stratification
title_short Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
title_full Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
title_fullStr Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
title_full_unstemmed Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
title_sort Phytoplankton Ecology During a Spring-Neap Tidal Cycle in the Southern Tidal Front of San Jorge Gulf, Patagonia
dc.creator.none.fl_str_mv Flores Melo, Elizabeth Ximena
Schloss, Irene Ruth
Chavanne, Cédric
Almandoz, Gastón Osvaldo
Latorre, Maite Pilmayquen
Ferreyra, Gustavo Adolfo
author Flores Melo, Elizabeth Ximena
author_facet Flores Melo, Elizabeth Ximena
Schloss, Irene Ruth
Chavanne, Cédric
Almandoz, Gastón Osvaldo
Latorre, Maite Pilmayquen
Ferreyra, Gustavo Adolfo
author_role author
author2 Schloss, Irene Ruth
Chavanne, Cédric
Almandoz, Gastón Osvaldo
Latorre, Maite Pilmayquen
Ferreyra, Gustavo Adolfo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Argentine sea, San Jorge Gulf
Frontal areas
Phytoplankton
Stratification
topic Ciencias Naturales
Argentine sea, San Jorge Gulf
Frontal areas
Phytoplankton
Stratification
dc.description.none.fl_txt_mv Tidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the southern front in San Jorge Gulf (SJG), Argentina, during a spring-neap tidal cycle. Baroclinic instabilities influence the shape and position of the front and presumably play an important role in the horizontal transport across the front. The highest phytoplankton biomass concentrations were found in the waters of the stratified side of the front during neap tide, with picophytoplankton, cyanobacteria, and nanophyto-plankton being the main contributors to the total autotrophic biomass. Bacteria contribute the most to heterotrophic biomass. In contrast, during spring tide, the carbon contribution of microphytoplankton was higher than during neap tide. In the mixed side, cells photoacclimate to optimum light conditions, suggesting that cells near the surface, which are probably photoinhibited, and cells below the euphotic zone, which are light-limited, are quickly advected by turbulent vertical motions to depths with optimal irradiance conditions.
Facultad de Ciencias Naturales y Museo
description Tidal fronts are interfaces that separate stratified from mixed waters. The stratified surface zone of a front has lower inorganic nutrient concentrations than the mixed side, and thus, phytoplankton assemblages are expected to differ from one side of the front to the other. Here, we characterize the physics, nutrient dynamics, and biology of the southern front in San Jorge Gulf (SJG), Argentina, during a spring-neap tidal cycle. Baroclinic instabilities influence the shape and position of the front and presumably play an important role in the horizontal transport across the front. The highest phytoplankton biomass concentrations were found in the waters of the stratified side of the front during neap tide, with picophytoplankton, cyanobacteria, and nanophyto-plankton being the main contributors to the total autotrophic biomass. Bacteria contribute the most to heterotrophic biomass. In contrast, during spring tide, the carbon contribution of microphytoplankton was higher than during neap tide. In the mixed side, cells photoacclimate to optimum light conditions, suggesting that cells near the surface, which are probably photoinhibited, and cells below the euphotic zone, which are light-limited, are quickly advected by turbulent vertical motions to depths with optimal irradiance conditions.
publishDate 2018
dc.date.none.fl_str_mv 2018-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/100730
url http://sedici.unlp.edu.ar/handle/10915/100730
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/92119
info:eu-repo/semantics/altIdentifier/url/https://tos.org/oceanography/article/phytoplankton-ecology-during-a-spring-neap-tidal-cycle-in-the-southern-tida
info:eu-repo/semantics/altIdentifier/issn/1042-8275
info:eu-repo/semantics/altIdentifier/doi/10.5670/oceanog.2018.412
info:eu-repo/semantics/altIdentifier/hdl/11336/92119
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
104-112
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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