Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)

Autores
Almandoz, Gaston Osvaldo; Hernando, Marcelo Pablo; Ferreyra, Gustavo Adolfo; Schloss, Irene Ruth; Ferrario, Martha Elba
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The phytoplankton biomass and composition dynamics in relation with environmental factors were explored during an annual cycle (July 2006–2007) for the first time in the Beagle Channel. Samples were examined by light and scanning electron microscopy and carbon biomass was estimated using measured cell biovolumes. The annual cycle was characterized by a sharp contrast between low density and biomass during the autumn–winter period and a significant increase during spring and summer. The maximum biomass peak was observed during early spring (141 μg C l− 1 and 8.7 μg Chl a l− 1) and was associated with a bloom of the diatom genus Chaetoceros. In spite of a strong nutrient depletion that lead to the subsequent bloom decline, a second peak of biomass was observed after 2 weeks, mainly represented by the diatoms T. mendiolana and T. anguste-lineata. Towards the end of spring and during summer diatom density decreased and assemblages were enriched by unidentified tiny phytoflagellates and dinoflagellates. A total of 138 taxa were identified during the study period. From these, 10 are known as potentially toxic species: Alexandrium catenella, A. ostenfeldii, A. tamarense, Dinophysis acuminata, D. rotundata, Prorocentrum cordatum, Pseudo-nitzschia australis, P. calliantha, P. fraudulenta and P. cf. seriata. Their presence is noteworthy since the area sustains a growing aquiculture production.
Fil: Almandoz, Gaston Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; Argentina
Fil: Hernando, Marcelo Pablo. Universidad de Morón; Argentina
Fil: Ferreyra, Gustavo Adolfo. Université du Québec a Montreal; Canadá
Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ferrario, Martha Elba. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; Argentina
Materia
Beagle Channel
Argentina
Phytoplankton
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/197690
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/197690
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)Almandoz, Gaston OsvaldoHernando, Marcelo PabloFerreyra, Gustavo AdolfoSchloss, Irene RuthFerrario, Martha ElbaBeagle ChannelArgentinaPhytoplanktonhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The phytoplankton biomass and composition dynamics in relation with environmental factors were explored during an annual cycle (July 2006–2007) for the first time in the Beagle Channel. Samples were examined by light and scanning electron microscopy and carbon biomass was estimated using measured cell biovolumes. The annual cycle was characterized by a sharp contrast between low density and biomass during the autumn–winter period and a significant increase during spring and summer. The maximum biomass peak was observed during early spring (141 μg C l− 1 and 8.7 μg Chl a l− 1) and was associated with a bloom of the diatom genus Chaetoceros. In spite of a strong nutrient depletion that lead to the subsequent bloom decline, a second peak of biomass was observed after 2 weeks, mainly represented by the diatoms T. mendiolana and T. anguste-lineata. Towards the end of spring and during summer diatom density decreased and assemblages were enriched by unidentified tiny phytoflagellates and dinoflagellates. A total of 138 taxa were identified during the study period. From these, 10 are known as potentially toxic species: Alexandrium catenella, A. ostenfeldii, A. tamarense, Dinophysis acuminata, D. rotundata, Prorocentrum cordatum, Pseudo-nitzschia australis, P. calliantha, P. fraudulenta and P. cf. seriata. Their presence is noteworthy since the area sustains a growing aquiculture production.Fil: Almandoz, Gaston Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; ArgentinaFil: Hernando, Marcelo Pablo. Universidad de Morón; ArgentinaFil: Ferreyra, Gustavo Adolfo. Université du Québec a Montreal; CanadáFil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Ferrario, Martha Elba. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; ArgentinaElsevier Science2011-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/197690Almandoz, Gaston Osvaldo; Hernando, Marcelo Pablo; Ferreyra, Gustavo Adolfo; Schloss, Irene Ruth; Ferrario, Martha Elba; Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina); Elsevier Science; Journal of Sea Research; 66; 2; 11-2011; 47-571385-1101CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385110111000256info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.03.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:48:22Zoai:ri.conicet.gov.ar:11336/197690instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:48:22.854CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
title Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
spellingShingle Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
Almandoz, Gaston Osvaldo
Beagle Channel
Argentina
Phytoplankton
title_short Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
title_full Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
title_fullStr Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
title_full_unstemmed Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
title_sort Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
dc.creator.none.fl_str_mv Almandoz, Gaston Osvaldo
Hernando, Marcelo Pablo
Ferreyra, Gustavo Adolfo
Schloss, Irene Ruth
Ferrario, Martha Elba
author Almandoz, Gaston Osvaldo
author_facet Almandoz, Gaston Osvaldo
Hernando, Marcelo Pablo
Ferreyra, Gustavo Adolfo
Schloss, Irene Ruth
Ferrario, Martha Elba
author_role author
author2 Hernando, Marcelo Pablo
Ferreyra, Gustavo Adolfo
Schloss, Irene Ruth
Ferrario, Martha Elba
author2_role author
author
author
author
dc.subject.none.fl_str_mv Beagle Channel
Argentina
Phytoplankton
topic Beagle Channel
Argentina
Phytoplankton
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The phytoplankton biomass and composition dynamics in relation with environmental factors were explored during an annual cycle (July 2006–2007) for the first time in the Beagle Channel. Samples were examined by light and scanning electron microscopy and carbon biomass was estimated using measured cell biovolumes. The annual cycle was characterized by a sharp contrast between low density and biomass during the autumn–winter period and a significant increase during spring and summer. The maximum biomass peak was observed during early spring (141 μg C l− 1 and 8.7 μg Chl a l− 1) and was associated with a bloom of the diatom genus Chaetoceros. In spite of a strong nutrient depletion that lead to the subsequent bloom decline, a second peak of biomass was observed after 2 weeks, mainly represented by the diatoms T. mendiolana and T. anguste-lineata. Towards the end of spring and during summer diatom density decreased and assemblages were enriched by unidentified tiny phytoflagellates and dinoflagellates. A total of 138 taxa were identified during the study period. From these, 10 are known as potentially toxic species: Alexandrium catenella, A. ostenfeldii, A. tamarense, Dinophysis acuminata, D. rotundata, Prorocentrum cordatum, Pseudo-nitzschia australis, P. calliantha, P. fraudulenta and P. cf. seriata. Their presence is noteworthy since the area sustains a growing aquiculture production.
Fil: Almandoz, Gaston Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; Argentina
Fil: Hernando, Marcelo Pablo. Universidad de Morón; Argentina
Fil: Ferreyra, Gustavo Adolfo. Université du Québec a Montreal; Canadá
Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ferrario, Martha Elba. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Ficología; Argentina
description The phytoplankton biomass and composition dynamics in relation with environmental factors were explored during an annual cycle (July 2006–2007) for the first time in the Beagle Channel. Samples were examined by light and scanning electron microscopy and carbon biomass was estimated using measured cell biovolumes. The annual cycle was characterized by a sharp contrast between low density and biomass during the autumn–winter period and a significant increase during spring and summer. The maximum biomass peak was observed during early spring (141 μg C l− 1 and 8.7 μg Chl a l− 1) and was associated with a bloom of the diatom genus Chaetoceros. In spite of a strong nutrient depletion that lead to the subsequent bloom decline, a second peak of biomass was observed after 2 weeks, mainly represented by the diatoms T. mendiolana and T. anguste-lineata. Towards the end of spring and during summer diatom density decreased and assemblages were enriched by unidentified tiny phytoflagellates and dinoflagellates. A total of 138 taxa were identified during the study period. From these, 10 are known as potentially toxic species: Alexandrium catenella, A. ostenfeldii, A. tamarense, Dinophysis acuminata, D. rotundata, Prorocentrum cordatum, Pseudo-nitzschia australis, P. calliantha, P. fraudulenta and P. cf. seriata. Their presence is noteworthy since the area sustains a growing aquiculture production.
publishDate 2011
dc.date.none.fl_str_mv 2011-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/197690
Almandoz, Gaston Osvaldo; Hernando, Marcelo Pablo; Ferreyra, Gustavo Adolfo; Schloss, Irene Ruth; Ferrario, Martha Elba; Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina); Elsevier Science; Journal of Sea Research; 66; 2; 11-2011; 47-57
1385-1101
CONICET Digital
CONICET
url http://hdl.handle.net/11336/197690
identifier_str_mv Almandoz, Gaston Osvaldo; Hernando, Marcelo Pablo; Ferreyra, Gustavo Adolfo; Schloss, Irene Ruth; Ferrario, Martha Elba; Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina); Elsevier Science; Journal of Sea Research; 66; 2; 11-2011; 47-57
1385-1101
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1385110111000256
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.03.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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