Summer phytoplankton distributions in the Weddell Sea
The quantitative composition of phytoplankton was studied along a transect of 14 hydrographic stations, between the southern coast of the Weddell Sea and the Antarctic Peninsula, during the austral summer of 1984-1985. The most apparent feature of the phytoplankton distribution was the presence of a bloom of Phaeocystis at a frontal zone over the shelf break, and the marked contrast between a southern region, with high phytoplankton biomass, and a poorer region north of the shelf break. The most widely distributed diatom genus was Nitzschia (Fragilariopsis section). The phytoplankton assemblage of the southern region included the silicoflagellate Distephanus speculum, the diatom Rhizosolenia alata and several heterotrophic dinoflagellates such as Protoperidinium antarcticum and P. applanatum. The northern assemblage could be characterized by the abundance of flagellates and small dinoflagellates, and by diatoms such as Chaetoceros criophilum, Corethron criophilum Nitzschia kerguelensis and other Nitzschia species of the Fragilariopsis section
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Springer
1990-06
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Subjects: | Phytoplankton, Dinoflagellate, Antarctic Peninsula, Frontal Zone, Austral Summer, |
Online Access: | http://hdl.handle.net/10261/256224 http://dx.doi.org/10.13039/501100003339 |
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dig-icm-es-10261-2562242021-12-16T11:16:06Z Summer phytoplankton distributions in the Weddell Sea Estrada, Marta Delgado, Maximino Consejo Superior de Investigaciones Científicas (España) Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer The quantitative composition of phytoplankton was studied along a transect of 14 hydrographic stations, between the southern coast of the Weddell Sea and the Antarctic Peninsula, during the austral summer of 1984-1985. The most apparent feature of the phytoplankton distribution was the presence of a bloom of Phaeocystis at a frontal zone over the shelf break, and the marked contrast between a southern region, with high phytoplankton biomass, and a poorer region north of the shelf break. The most widely distributed diatom genus was Nitzschia (Fragilariopsis section). The phytoplankton assemblage of the southern region included the silicoflagellate Distephanus speculum, the diatom Rhizosolenia alata and several heterotrophic dinoflagellates such as Protoperidinium antarcticum and P. applanatum. The northern assemblage could be characterized by the abundance of flagellates and small dinoflagellates, and by diatoms such as Chaetoceros criophilum, Corethron criophilum Nitzschia kerguelensis and other Nitzschia species of the Fragilariopsis section This research was made possible by the Argentinean invitation to participate in the ARA Almirante lrizar cruise and by funds from the Consejo Superior de Investigaciones Cientificas. We thank the crew and scientific participants in the cruise for their cooperation in the collection of the samples. We are indebted to our Argentinean colleagues and in particular to Drs. Viviana Alder and Marta Ferrario for their valuable help in many scientific aspects of the work. Mr. Joan Biosca, Ms. Antonia Cruz and Ms. Maria Vrlez provided technical assistance 2021-12-16T11:00:05Z 2021-12-16T11:00:05Z 1990-06 2021-12-16T11:00:06Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0722-4060 e-issn: 1432-2056 Polar Biology 10: 441-449 (1990) http://hdl.handle.net/10261/256224 10.1007/BF00233692 http://dx.doi.org/10.13039/501100003339 https://doi.org/10.1007/BF00233692 Sí none Springer |
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Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer |
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Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer Estrada, Marta Delgado, Maximino Summer phytoplankton distributions in the Weddell Sea |
description |
The quantitative composition of phytoplankton was studied along a transect of 14 hydrographic stations, between the southern coast of the Weddell Sea and the Antarctic Peninsula, during the austral summer of 1984-1985. The most apparent feature of the phytoplankton distribution was the presence of a bloom of Phaeocystis at a frontal zone over the shelf break, and the marked contrast between a southern region, with high phytoplankton biomass, and a poorer region north of the shelf break. The most widely distributed diatom genus was Nitzschia (Fragilariopsis section). The phytoplankton assemblage of the southern region included the silicoflagellate Distephanus speculum, the diatom Rhizosolenia alata and several heterotrophic dinoflagellates such as Protoperidinium antarcticum and P. applanatum. The northern assemblage could be characterized by the abundance of flagellates and small dinoflagellates, and by diatoms such as Chaetoceros criophilum, Corethron criophilum Nitzschia kerguelensis and other Nitzschia species of the Fragilariopsis section |
author2 |
Consejo Superior de Investigaciones Científicas (España) |
author_facet |
Consejo Superior de Investigaciones Científicas (España) Estrada, Marta Delgado, Maximino |
format |
artículo |
topic_facet |
Phytoplankton Dinoflagellate Antarctic Peninsula Frontal Zone Austral Summer |
author |
Estrada, Marta Delgado, Maximino |
author_sort |
Estrada, Marta |
title |
Summer phytoplankton distributions in the Weddell Sea |
title_short |
Summer phytoplankton distributions in the Weddell Sea |
title_full |
Summer phytoplankton distributions in the Weddell Sea |
title_fullStr |
Summer phytoplankton distributions in the Weddell Sea |
title_full_unstemmed |
Summer phytoplankton distributions in the Weddell Sea |
title_sort |
summer phytoplankton distributions in the weddell sea |
publisher |
Springer |
publishDate |
1990-06 |
url |
http://hdl.handle.net/10261/256224 http://dx.doi.org/10.13039/501100003339 |
work_keys_str_mv |
AT estradamarta summerphytoplanktondistributionsintheweddellsea AT delgadomaximino summerphytoplanktondistributionsintheweddellsea |
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1777667601271357440 |