Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses
Tintinnids (Ciliophora) are important microzooplankton grazers. In the Southern Ocean, they are found in the Antarctic Zone, Polar Front and Subantarctic Zone. The Antarctic Zone encompasses large gyres (Weddell Gyre and Ross Gyre) and the Antarctic Slope Current around the continent. The influence...
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Norwegian Polar Institute
2023
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ftdoajarticles:oai:doaj.org/article:ce30db1fe8ce4c75bae1b93770944d63 2024-01-14T10:02:22+01:00 Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses Jingyuan Li Haibo Li Chaofeng Wang Yuan Zhao Li Zhao Yi Dong Wuchang Zhang 2023-11-01T00:00:00Z https://doi.org/10.33265/polar.v42.9469 https://doaj.org/article/ce30db1fe8ce4c75bae1b93770944d63 EN eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/9469/16426 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 0800-0395 1751-8369 doi:10.33265/polar.v42.9469 https://doaj.org/article/ce30db1fe8ce4c75bae1b93770944d63 Polar Research, Vol 42, Pp 1-14 (2023) antarctica microzooplankton ciliate biogeographic distribution indicator sea currents Environmental sciences GE1-350 Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.33265/polar.v42.9469 2023-12-17T01:47:10Z Tintinnids (Ciliophora) are important microzooplankton grazers. In the Southern Ocean, they are found in the Antarctic Zone, Polar Front and Subantarctic Zone. The Antarctic Zone encompasses large gyres (Weddell Gyre and Ross Gyre) and the Antarctic Slope Current around the continent. The influence of these water masses on tintinnid communities has not been studied. This study investigated the tintinnid community structure in the Weddell and Cosmonaut seas in the summer of 2022. In the Weddell Gyre, tintinnid abundance was significantly lower in the interior than at the fronts. The dominant species differed between the east and west fronts: the proportion of Codonellopsis gaussi was high at the west front, whilst Laackmanniella naviculaefera, Salpingella sp. and Salpingella faurei showed high abundances at the east front. Tintinnid communities varied from inshore to offshore of the Cosmonaut Sea, possibly because of the influence from the Antarctic Slope Current and Antarctic Circumpolar Current. The Antarctic Slope Current was characterized by the occurrence of Cymatocylis drygalskii, whilst the Antarctic Circumpolar Current was characterized by Codonellopsis glacialis, Cymatocylis convallaria and Cy. calyciformis. We proposed that Cy. drygalskii can be used as an indicator of the Antarctic Slope Current. Moreover, we classify polymorphic C. gaussi into three types, in accordance with their loricae, and report their distribution characteristics in water masses. Our results contribute to a better understanding of tintinnid horizontal distribution in different parts of the Weddell Gyre and water masses and serve as a baseline for future studies of pelagic community responses to climate change in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctica Cosmonaut sea Polar Research Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean The Antarctic Weddell Polar Research 42 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
antarctica microzooplankton ciliate biogeographic distribution indicator sea currents Environmental sciences GE1-350 Oceanography GC1-1581 |
spellingShingle |
antarctica microzooplankton ciliate biogeographic distribution indicator sea currents Environmental sciences GE1-350 Oceanography GC1-1581 Jingyuan Li Haibo Li Chaofeng Wang Yuan Zhao Li Zhao Yi Dong Wuchang Zhang Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
topic_facet |
antarctica microzooplankton ciliate biogeographic distribution indicator sea currents Environmental sciences GE1-350 Oceanography GC1-1581 |
description |
Tintinnids (Ciliophora) are important microzooplankton grazers. In the Southern Ocean, they are found in the Antarctic Zone, Polar Front and Subantarctic Zone. The Antarctic Zone encompasses large gyres (Weddell Gyre and Ross Gyre) and the Antarctic Slope Current around the continent. The influence of these water masses on tintinnid communities has not been studied. This study investigated the tintinnid community structure in the Weddell and Cosmonaut seas in the summer of 2022. In the Weddell Gyre, tintinnid abundance was significantly lower in the interior than at the fronts. The dominant species differed between the east and west fronts: the proportion of Codonellopsis gaussi was high at the west front, whilst Laackmanniella naviculaefera, Salpingella sp. and Salpingella faurei showed high abundances at the east front. Tintinnid communities varied from inshore to offshore of the Cosmonaut Sea, possibly because of the influence from the Antarctic Slope Current and Antarctic Circumpolar Current. The Antarctic Slope Current was characterized by the occurrence of Cymatocylis drygalskii, whilst the Antarctic Circumpolar Current was characterized by Codonellopsis glacialis, Cymatocylis convallaria and Cy. calyciformis. We proposed that Cy. drygalskii can be used as an indicator of the Antarctic Slope Current. Moreover, we classify polymorphic C. gaussi into three types, in accordance with their loricae, and report their distribution characteristics in water masses. Our results contribute to a better understanding of tintinnid horizontal distribution in different parts of the Weddell Gyre and water masses and serve as a baseline for future studies of pelagic community responses to climate change in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Jingyuan Li Haibo Li Chaofeng Wang Yuan Zhao Li Zhao Yi Dong Wuchang Zhang |
author_facet |
Jingyuan Li Haibo Li Chaofeng Wang Yuan Zhao Li Zhao Yi Dong Wuchang Zhang |
author_sort |
Jingyuan Li |
title |
Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
title_short |
Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
title_full |
Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
title_fullStr |
Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
title_full_unstemmed |
Summertime tintinnids in surface water of the Weddell and Cosmonaut seas: community structure and relationships with different water masses |
title_sort |
summertime tintinnids in surface water of the weddell and cosmonaut seas: community structure and relationships with different water masses |
publisher |
Norwegian Polar Institute |
publishDate |
2023 |
url |
https://doi.org/10.33265/polar.v42.9469 https://doaj.org/article/ce30db1fe8ce4c75bae1b93770944d63 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell |
genre |
Antarc* Antarctic Antarctica Cosmonaut sea Polar Research Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Cosmonaut sea Polar Research Southern Ocean |
op_source |
Polar Research, Vol 42, Pp 1-14 (2023) |
op_relation |
https://polarresearch.net/index.php/polar/article/view/9469/16426 https://doaj.org/toc/0800-0395 https://doaj.org/toc/1751-8369 0800-0395 1751-8369 doi:10.33265/polar.v42.9469 https://doaj.org/article/ce30db1fe8ce4c75bae1b93770944d63 |
op_doi |
https://doi.org/10.33265/polar.v42.9469 |
container_title |
Polar Research |
container_volume |
42 |
_version_ |
1788057362170380288 |