Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86)
During the icebreaker SHIRASE cruise of the 27th Japanese Antarctic Research Expedition (JARE-27; 1985/86), vertical profiles of phytoplankton chlorophyll a concentration in the upper 200m of the water column were observed at 12 stations in the Southern Ocean and at 3 stations in the subtropical wat...
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Laboratory of Oceanography, Faculty of Agriculture, Tohoku University/National Institute of Polar Research/National Institute of Polar Research
1999
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ftnipr:oai:nipr.repo.nii.ac.jp:00006126 2023-05-15T13:46:39+02:00 Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) Hiroshi Hattori Atsushi Tanimura Mitsuo Fukuchi 1999-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6126 http://id.nii.ac.jp/1291/00006126/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6126&item_no=1&attribute_id=18&file_no=1 en eng Laboratory of Oceanography, Faculty of Agriculture, Tohoku University/National Institute of Polar Research/National Institute of Polar Research National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6126 http://id.nii.ac.jp/1291/00006126/ AA11327019 Polar bioscience, 12, 15-25(1999-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6126&item_no=1&attribute_id=18&file_no=1 size fractioned chlorophyll a vertical distribution Southern Ocean water stability JARE-27 Departmental Bulletin Paper P(論文) 1999 ftnipr 2023-03-04T20:18:29Z During the icebreaker SHIRASE cruise of the 27th Japanese Antarctic Research Expedition (JARE-27; 1985/86), vertical profiles of phytoplankton chlorophyll a concentration in the upper 200m of the water column were observed at 12 stations in the Southern Ocean and at 3 stations in the subtropical water from December 1985 to March 1986. High phytoplankton chlorophyll standing crops (ca. 370mg m^<-2> in December and 330mg m^<-2> in February) were observed in Breid Bay, Antarctica. In other stations of the Antarctic Ocean, the standing crops were less than 52mg m^<-2>. Size fractionation studies revealed that net-phytoplankton (>20μm) was the dominant fraction of total chlorophyll a during the summer bloom in Breid Bay. In Antarctic waters, the high contributions of the net-phytoplankton fraction corresponded to high total biomass. And also, contribution of the net-phytoplankton to the total phytoplankton was supposed to be controlled by the length of the ice-free period. Considering the high phytoplankton growth rates under the nutrient rich condition, duration under optimum light condition and water stability appear to be important factors affecting the phytoplankton crops in the Antarctic Ocean in summer. Report Antarc* Antarctic Antarctic Ocean Antarctica Polar bioscience Southern Ocean National Institute of Polar Research Repository, Japan Antarctic Antarctic Ocean Breid Bay ENVELOPE(24.083,24.083,-70.250,-70.250) Indian Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
size fractioned chlorophyll a vertical distribution Southern Ocean water stability JARE-27 |
spellingShingle |
size fractioned chlorophyll a vertical distribution Southern Ocean water stability JARE-27 Hiroshi Hattori Atsushi Tanimura Mitsuo Fukuchi Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
topic_facet |
size fractioned chlorophyll a vertical distribution Southern Ocean water stability JARE-27 |
description |
During the icebreaker SHIRASE cruise of the 27th Japanese Antarctic Research Expedition (JARE-27; 1985/86), vertical profiles of phytoplankton chlorophyll a concentration in the upper 200m of the water column were observed at 12 stations in the Southern Ocean and at 3 stations in the subtropical water from December 1985 to March 1986. High phytoplankton chlorophyll standing crops (ca. 370mg m^<-2> in December and 330mg m^<-2> in February) were observed in Breid Bay, Antarctica. In other stations of the Antarctic Ocean, the standing crops were less than 52mg m^<-2>. Size fractionation studies revealed that net-phytoplankton (>20μm) was the dominant fraction of total chlorophyll a during the summer bloom in Breid Bay. In Antarctic waters, the high contributions of the net-phytoplankton fraction corresponded to high total biomass. And also, contribution of the net-phytoplankton to the total phytoplankton was supposed to be controlled by the length of the ice-free period. Considering the high phytoplankton growth rates under the nutrient rich condition, duration under optimum light condition and water stability appear to be important factors affecting the phytoplankton crops in the Antarctic Ocean in summer. |
format |
Report |
author |
Hiroshi Hattori Atsushi Tanimura Mitsuo Fukuchi |
author_facet |
Hiroshi Hattori Atsushi Tanimura Mitsuo Fukuchi |
author_sort |
Hiroshi Hattori |
title |
Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
title_short |
Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
title_full |
Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
title_fullStr |
Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
title_full_unstemmed |
Vertical distribution of size fractionated phytoplankton chlorophyll in the Indian sector of the Southern Ocean in summer(1985/86) |
title_sort |
vertical distribution of size fractionated phytoplankton chlorophyll in the indian sector of the southern ocean in summer(1985/86) |
publisher |
Laboratory of Oceanography, Faculty of Agriculture, Tohoku University/National Institute of Polar Research/National Institute of Polar Research |
publishDate |
1999 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6126 http://id.nii.ac.jp/1291/00006126/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6126&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(24.083,24.083,-70.250,-70.250) |
geographic |
Antarctic Antarctic Ocean Breid Bay Indian Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Ocean Breid Bay Indian Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Ocean Antarctica Polar bioscience Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean Antarctica Polar bioscience Southern Ocean |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6126 http://id.nii.ac.jp/1291/00006126/ AA11327019 Polar bioscience, 12, 15-25(1999-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6126&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766244998221660160 |