North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer
Various zooplankton studies have been conducted in the Indian sector of the Southern Ocean, but studies investigating spatial changes in both meso- and macro-zooplankton populations are limited. To reveal the north-south change of the mesoand macro-zooplankton community structure and the population...
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北海道大学大学院水産科学研究院
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/82343 2023-05-15T13:51:33+02:00 North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer Sugioka, Rikuto Matsuno, Kohei Takahashi, Keigo D. Makabe, Ryosuke Takahashi, Kunio T. Moteki, Masato Odate, Tsuneo Yamaguchi, Atsushi http://hdl.handle.net/2115/82343 https://doi.org/10.14943/bull.fish.71.1.39 eng eng 北海道大学大学院水産科学研究院 http://hdl.handle.net/2115/82343 doi:10.14943/bull.fish.71.1.39 北海道大学水産科学研究彙報, 71(1): 39-50 Antarctic Ocean Zooplankton community Copepoda Population structure 660 bulletin (article) fthokunivhus https://doi.org/10.14943/bull.fish.71.1.39 2022-11-18T01:06:36Z Various zooplankton studies have been conducted in the Indian sector of the Southern Ocean, but studies investigating spatial changes in both meso- and macro-zooplankton populations are limited. To reveal the north-south change of the mesoand macro-zooplankton community structure and the population structure of large copepods, we investigated zooplankton communities collected by the Ocean Research Institute (ORI) net along the 110°E transect in the Indian sector of the Southern Ocean during the austral summer. The zooplankton abundance and biomass were high at the stations north of 60°S and was dominated by large copepods, especially Calanoides acutus. A cluster analysis identified four zooplankton community groups. The distribution pattern of the community groups is likely to be related to the frontal system. The population structure of the dominant species of C. acutus, Calanus propinquus and Rhincalanus gigas had a similar tendency early copepodite stages were abundant in the northern region, while late copepodite stages dominated in the southern region. The meridional changes in the population structure are explained by different reproduction periods in each region related to sea-ice melt timing. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Sea ice Southern Ocean Copepods Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Antarctic Antarctic Ocean Austral Indian Southern Ocean |
institution |
Open Polar |
collection |
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
Antarctic Ocean Zooplankton community Copepoda Population structure 660 |
spellingShingle |
Antarctic Ocean Zooplankton community Copepoda Population structure 660 Sugioka, Rikuto Matsuno, Kohei Takahashi, Keigo D. Makabe, Ryosuke Takahashi, Kunio T. Moteki, Masato Odate, Tsuneo Yamaguchi, Atsushi North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
topic_facet |
Antarctic Ocean Zooplankton community Copepoda Population structure 660 |
description |
Various zooplankton studies have been conducted in the Indian sector of the Southern Ocean, but studies investigating spatial changes in both meso- and macro-zooplankton populations are limited. To reveal the north-south change of the mesoand macro-zooplankton community structure and the population structure of large copepods, we investigated zooplankton communities collected by the Ocean Research Institute (ORI) net along the 110°E transect in the Indian sector of the Southern Ocean during the austral summer. The zooplankton abundance and biomass were high at the stations north of 60°S and was dominated by large copepods, especially Calanoides acutus. A cluster analysis identified four zooplankton community groups. The distribution pattern of the community groups is likely to be related to the frontal system. The population structure of the dominant species of C. acutus, Calanus propinquus and Rhincalanus gigas had a similar tendency early copepodite stages were abundant in the northern region, while late copepodite stages dominated in the southern region. The meridional changes in the population structure are explained by different reproduction periods in each region related to sea-ice melt timing. |
format |
Article in Journal/Newspaper |
author |
Sugioka, Rikuto Matsuno, Kohei Takahashi, Keigo D. Makabe, Ryosuke Takahashi, Kunio T. Moteki, Masato Odate, Tsuneo Yamaguchi, Atsushi |
author_facet |
Sugioka, Rikuto Matsuno, Kohei Takahashi, Keigo D. Makabe, Ryosuke Takahashi, Kunio T. Moteki, Masato Odate, Tsuneo Yamaguchi, Atsushi |
author_sort |
Sugioka, Rikuto |
title |
North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
title_short |
North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
title_full |
North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
title_fullStr |
North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
title_full_unstemmed |
North-south changes of zooplankton community and copepods population along the 110°E line in the Indian sector of the Southern Ocean during the austral summer |
title_sort |
north-south changes of zooplankton community and copepods population along the 110°e line in the indian sector of the southern ocean during the austral summer |
publisher |
北海道大学大学院水産科学研究院 |
url |
http://hdl.handle.net/2115/82343 https://doi.org/10.14943/bull.fish.71.1.39 |
geographic |
Antarctic Antarctic Ocean Austral Indian Southern Ocean |
geographic_facet |
Antarctic Antarctic Ocean Austral Indian Southern Ocean |
genre |
Antarc* Antarctic Antarctic Ocean Sea ice Southern Ocean Copepods |
genre_facet |
Antarc* Antarctic Antarctic Ocean Sea ice Southern Ocean Copepods |
op_relation |
http://hdl.handle.net/2115/82343 doi:10.14943/bull.fish.71.1.39 北海道大学水産科学研究彙報, 71(1): 39-50 |
op_doi |
https://doi.org/10.14943/bull.fish.71.1.39 |
_version_ |
1766255458844147712 |