Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84
The size structure of phytoplankton carbon content and primary production were examined in the upper 125-m water column in the Southern Ocean south of Australia during the summer of 1983-84. At the surface, total phytoplankton carbon was 13.8±1.6μg/l in the Subantarctic Ocean and 45.6±27.4μg/l in th...
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Ocean Research Institute, University of Tokyo/Ocean Research Institute, University of Tokyo
1986
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ftnipr:oai:nipr.repo.nii.ac.jp:00001871 2023-05-15T13:47:59+02:00 Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 Hosaka,Nobuhito Nemoto,Takahisa 1986-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1871 http://id.nii.ac.jp/1291/00001871/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1871&item_no=1&attribute_id=18&file_no=1 en eng Ocean Research Institute, University of Tokyo/Ocean Research Institute, University of Tokyo https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1871 http://id.nii.ac.jp/1291/00001871/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 40, 15-24(1986-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1871&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1986 ftnipr 2022-11-12T19:42:40Z The size structure of phytoplankton carbon content and primary production were examined in the upper 125-m water column in the Southern Ocean south of Australia during the summer of 1983-84. At the surface, total phytoplankton carbon was 13.8±1.6μg/l in the Subantarctic Ocean and 45.6±27.4μg/l in the Antarctic Ocean. Phytoplankton in the 8 to 16-μm size class accounted for a large portion of phytoplankton carbon in the Subantarctic Ocean, whereas >64-μm forms were dominant in the Antarctic Ocean. The mean primary production was 0.952mgC/m^3/h in the Subantarctic Ocean and 0.400 in the Antarctic Ocean; the >20-μm fraction accounted for a major part of the total production in both areas. Geographically, both phytoplankton carbon and primary production in the small cell size classes (<16μm for phytoplankton carbon and <5μm for primary production) were relatively constant, though those of netplankton (>16 and >5μm, respectively) which were composed mainly of diatoms varied largely, determining the magnitude of the total values. Such large variation of biomass in netplankton as found in the surface water was also found down to the 125-m depth at all stations investigated. The importance of netplankton as primary producers in the Southern Ocean was discussed. Report Antarc* Antarctic Antarctic Ocean Memoirs of National Institute of Polar Research Polar Research Southern Ocean National Institute of Polar Research Repository, Japan Antarctic Antarctic Ocean Southern Ocean The Antarctic |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
The size structure of phytoplankton carbon content and primary production were examined in the upper 125-m water column in the Southern Ocean south of Australia during the summer of 1983-84. At the surface, total phytoplankton carbon was 13.8±1.6μg/l in the Subantarctic Ocean and 45.6±27.4μg/l in the Antarctic Ocean. Phytoplankton in the 8 to 16-μm size class accounted for a large portion of phytoplankton carbon in the Subantarctic Ocean, whereas >64-μm forms were dominant in the Antarctic Ocean. The mean primary production was 0.952mgC/m^3/h in the Subantarctic Ocean and 0.400 in the Antarctic Ocean; the >20-μm fraction accounted for a major part of the total production in both areas. Geographically, both phytoplankton carbon and primary production in the small cell size classes (<16μm for phytoplankton carbon and <5μm for primary production) were relatively constant, though those of netplankton (>16 and >5μm, respectively) which were composed mainly of diatoms varied largely, determining the magnitude of the total values. Such large variation of biomass in netplankton as found in the surface water was also found down to the 125-m depth at all stations investigated. The importance of netplankton as primary producers in the Southern Ocean was discussed. |
format |
Report |
author |
Hosaka,Nobuhito Nemoto,Takahisa |
spellingShingle |
Hosaka,Nobuhito Nemoto,Takahisa Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
author_facet |
Hosaka,Nobuhito Nemoto,Takahisa |
author_sort |
Hosaka,Nobuhito |
title |
Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
title_short |
Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
title_full |
Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
title_fullStr |
Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
title_full_unstemmed |
Size structure of phytoplankton carbon and primary production in the Southern Ocean south of Australia during the summer of 1983-84 |
title_sort |
size structure of phytoplankton carbon and primary production in the southern ocean south of australia during the summer of 1983-84 |
publisher |
Ocean Research Institute, University of Tokyo/Ocean Research Institute, University of Tokyo |
publishDate |
1986 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1871 http://id.nii.ac.jp/1291/00001871/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1871&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Antarctic Ocean Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Memoirs of National Institute of Polar Research Polar Research Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean Memoirs of National Institute of Polar Research Polar Research Southern Ocean |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1871 http://id.nii.ac.jp/1291/00001871/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 40, 15-24(1986-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1871&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248320631570432 |