Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean
NORPAC net samplings at three stations along a south-north transect on ca. 140°E were conducted in the Indian sector of the Southern Ocean from March 10 to 12 in 2002 during the 43rd Japanese Antarctic Research Expedition. The survey was held to examine the community structure and abundance of Copep...
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National Institute of Polar Research/Australian Government Antarctic Division/Graduate School of Fisheries Sciences, Hokkaido University/National Institute of Polar Research
2006
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ftnipr:oai:nipr.repo.nii.ac.jp:00006267 2023-05-15T14:05:20+02:00 Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean Megumu Tsujimoto Kunio T. Takahashi Toru Hirawake Mitsuo Fukuchi 2006-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6267 http://id.nii.ac.jp/1291/00006267/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6267&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research/Australian Government Antarctic Division/Graduate School of Fisheries Sciences, Hokkaido University/National Institute of Polar Research National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6267 http://id.nii.ac.jp/1291/00006267/ AA11327019 Polar bioscience, 20, 140-146(2006-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6267&item_no=1&attribute_id=18&file_no=1 Copepoda sea ice retreat seasonal ice zone Southern Boundary (SB) zooplankton Departmental Bulletin Paper P(論文) 2006 ftnipr 2023-03-18T20:23:29Z NORPAC net samplings at three stations along a south-north transect on ca. 140°E were conducted in the Indian sector of the Southern Ocean from March 10 to 12 in 2002 during the 43rd Japanese Antarctic Research Expedition. The survey was held to examine the community structure and abundance of Copepoda in the seasonal ice zone of the Southern Ocean. A total of 15 species of copepod were identified at the stations. For nine species of copepod, Microcalanus pygmaeus, Calanus simillimus, Rhincalanus gigas, Euchaeta antarctica, Clausocalanus laticeps, Scolecithricella minor, Metridia lucens, Haloptilus oxycephalus and Oithona frigida, disparities of the distributions between the south of the Southern Boundary (SB) and the north became apparent. As here was a distinct difference of, about 2°C, in the sea surface temperature between the south and north of the SB, these disparities were considered to be influenced by the difference in the physical structure in the ocean, in particular by the water temperature, which was driven by the SB. Among Calanoides acutus, Calanus propinquus, and R. gigas, the earlier copepodite stages were observed at higher latitudes at all stations. This trend was considered to be a result of the sea ice retreat, which caused a later spawning period for Copepoda. In addition, an interaction between the sea ice conditions and the community structure of copepod along 140°E was suggested. Report Antarc* Antarctic Antarctica Polar bioscience Sea ice Southern Ocean National Institute of Polar Research Repository, Japan Antarctic Indian Southern Ocean |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Copepoda sea ice retreat seasonal ice zone Southern Boundary (SB) zooplankton |
spellingShingle |
Copepoda sea ice retreat seasonal ice zone Southern Boundary (SB) zooplankton Megumu Tsujimoto Kunio T. Takahashi Toru Hirawake Mitsuo Fukuchi Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
topic_facet |
Copepoda sea ice retreat seasonal ice zone Southern Boundary (SB) zooplankton |
description |
NORPAC net samplings at three stations along a south-north transect on ca. 140°E were conducted in the Indian sector of the Southern Ocean from March 10 to 12 in 2002 during the 43rd Japanese Antarctic Research Expedition. The survey was held to examine the community structure and abundance of Copepoda in the seasonal ice zone of the Southern Ocean. A total of 15 species of copepod were identified at the stations. For nine species of copepod, Microcalanus pygmaeus, Calanus simillimus, Rhincalanus gigas, Euchaeta antarctica, Clausocalanus laticeps, Scolecithricella minor, Metridia lucens, Haloptilus oxycephalus and Oithona frigida, disparities of the distributions between the south of the Southern Boundary (SB) and the north became apparent. As here was a distinct difference of, about 2°C, in the sea surface temperature between the south and north of the SB, these disparities were considered to be influenced by the difference in the physical structure in the ocean, in particular by the water temperature, which was driven by the SB. Among Calanoides acutus, Calanus propinquus, and R. gigas, the earlier copepodite stages were observed at higher latitudes at all stations. This trend was considered to be a result of the sea ice retreat, which caused a later spawning period for Copepoda. In addition, an interaction between the sea ice conditions and the community structure of copepod along 140°E was suggested. |
format |
Report |
author |
Megumu Tsujimoto Kunio T. Takahashi Toru Hirawake Mitsuo Fukuchi |
author_facet |
Megumu Tsujimoto Kunio T. Takahashi Toru Hirawake Mitsuo Fukuchi |
author_sort |
Megumu Tsujimoto |
title |
Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
title_short |
Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
title_full |
Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
title_fullStr |
Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
title_full_unstemmed |
Distribution of Copepoda along 140°E in the Indian sector of the Southern Ocean |
title_sort |
distribution of copepoda along 140°e in the indian sector of the southern ocean |
publisher |
National Institute of Polar Research/Australian Government Antarctic Division/Graduate School of Fisheries Sciences, Hokkaido University/National Institute of Polar Research |
publishDate |
2006 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6267 http://id.nii.ac.jp/1291/00006267/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6267&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic Antarctica Polar bioscience Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Polar bioscience Sea ice Southern Ocean |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=6267 http://id.nii.ac.jp/1291/00006267/ AA11327019 Polar bioscience, 20, 140-146(2006-12) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=6267&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766277152106348544 |