Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina)
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 ce...
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ftconicet:oai:ri.conicet.gov.ar:11336/197690 2023-10-09T21:51:02+02:00 Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina) Almandoz, Gaston Osvaldo Hernando, Marcelo Pablo Ferreyra, Gustavo Adolfo Schloss, Irene Ruth Ferrario, Martha Elba application/pdf http://hdl.handle.net/11336/197690 eng eng Elsevier Science 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 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 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Beagle Channel Argentina Phytoplankton https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.seares.2011.03.005 2023-09-24T18:39:13Z 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: ... Article in Journal/Newspaper Dirección Nacional del Antártico Instituto Antártico Argentino CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentino Argentina Pablo ENVELOPE(-63.717,-63.717,-64.283,-64.283) Gustavo ENVELOPE(-62.917,-62.917,-64.833,-64.833) Gaston ENVELOPE(65.783,65.783,-70.417,-70.417) Journal of Sea Research 66 2 47 57 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Beagle Channel Argentina Phytoplankton https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
Beagle Channel Argentina Phytoplankton https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 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) |
topic_facet |
Beagle Channel Argentina Phytoplankton https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
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. 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: ... |
format |
Article in Journal/Newspaper |
author |
Almandoz, Gaston Osvaldo Hernando, Marcelo Pablo Ferreyra, Gustavo Adolfo Schloss, Irene Ruth Ferrario, Martha Elba |
author_facet |
Almandoz, Gaston Osvaldo Hernando, Marcelo Pablo Ferreyra, Gustavo Adolfo Schloss, Irene Ruth Ferrario, Martha Elba |
author_sort |
Almandoz, Gaston Osvaldo |
title |
Seasonal phytoplankton dynamics in extreme southern South America (Beagle Channel, Argentina) |
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) |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/197690 |
long_lat |
ENVELOPE(-63.717,-63.717,-64.283,-64.283) ENVELOPE(-62.917,-62.917,-64.833,-64.833) ENVELOPE(65.783,65.783,-70.417,-70.417) |
geographic |
Argentino Argentina Pablo Gustavo Gaston |
geographic_facet |
Argentino Argentina Pablo Gustavo Gaston |
genre |
Dirección Nacional del Antártico Instituto Antártico Argentino |
genre_facet |
Dirección Nacional del Antártico Instituto Antártico Argentino |
op_relation |
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 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 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.seares.2011.03.005 |
container_title |
Journal of Sea Research |
container_volume |
66 |
container_issue |
2 |
container_start_page |
47 |
op_container_end_page |
57 |
_version_ |
1779314118910541824 |