Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer
Euthecosomatous pteropods with carbonate (aragonite) shells living in polar waters are thought to be very sensitive to ocean acidification resulting from increased anthropogenic CO2 uptake. To assess the impacts of ocean acidification on pteropods, we investigated pteropod abundance and shell size a...
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National Institute of Polar Research
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ftdoajarticles:oai:doaj.org/article:4222b985e9824576a1db1087b69a8d6f 2023-05-15T13:54:00+02:00 Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer Yuko Nishizawa Hiroshi Sasaki Kunio T. Takahashi 2016-07-01T00:00:00Z https://doi.org/10.15094/00012672 https://doaj.org/article/4222b985e9824576a1db1087b69a8d6f EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00012672 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00012672 0085-7289 2432-079X https://doaj.org/article/4222b985e9824576a1db1087b69a8d6f Antarctic Record, Vol 60, Pp 35-48 (2016) Pteropods shell size ocean acidification Geography (General) G1-922 article 2016 ftdoajarticles https://doi.org/10.15094/00012672 2022-12-31T14:41:56Z Euthecosomatous pteropods with carbonate (aragonite) shells living in polar waters are thought to be very sensitive to ocean acidification resulting from increased anthropogenic CO2 uptake. To assess the impacts of ocean acidification on pteropods, we investigated pteropod abundance and shell size at three sites located between 55 and 64°S on the 110°E meridian in the Indian sector of the Southern Ocean during austral summer from 1987 to 2008 with the Japanese Antarctic Research Expedition (JARE) monitoring projects. The pteropod community was dominated by Limacina spp. with a shell size of <400 μm, and there was a distinct interannual variation ranging 2.2–2767.7 ind. m-3. No significant decrease in pH was detected in various water layers above 400 m depth at three sites (55°S, 60°S and 64°S) during the study period, and no marked decrease both in abundance and shell size have been observed in these waters for at least 20 years. Though ocean acidification in the Southern Ocean will be in progress, the effects on shelled pteropods are not yet evident. Article in Journal/Newspaper Antarc* Antarctic Ocean acidification Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Austral Indian |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Pteropods shell size ocean acidification Geography (General) G1-922 |
spellingShingle |
Pteropods shell size ocean acidification Geography (General) G1-922 Yuko Nishizawa Hiroshi Sasaki Kunio T. Takahashi Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
topic_facet |
Pteropods shell size ocean acidification Geography (General) G1-922 |
description |
Euthecosomatous pteropods with carbonate (aragonite) shells living in polar waters are thought to be very sensitive to ocean acidification resulting from increased anthropogenic CO2 uptake. To assess the impacts of ocean acidification on pteropods, we investigated pteropod abundance and shell size at three sites located between 55 and 64°S on the 110°E meridian in the Indian sector of the Southern Ocean during austral summer from 1987 to 2008 with the Japanese Antarctic Research Expedition (JARE) monitoring projects. The pteropod community was dominated by Limacina spp. with a shell size of <400 μm, and there was a distinct interannual variation ranging 2.2–2767.7 ind. m-3. No significant decrease in pH was detected in various water layers above 400 m depth at three sites (55°S, 60°S and 64°S) during the study period, and no marked decrease both in abundance and shell size have been observed in these waters for at least 20 years. Though ocean acidification in the Southern Ocean will be in progress, the effects on shelled pteropods are not yet evident. |
format |
Article in Journal/Newspaper |
author |
Yuko Nishizawa Hiroshi Sasaki Kunio T. Takahashi |
author_facet |
Yuko Nishizawa Hiroshi Sasaki Kunio T. Takahashi |
author_sort |
Yuko Nishizawa |
title |
Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
title_short |
Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
title_full |
Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
title_fullStr |
Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
title_full_unstemmed |
Interannual variability in euthecosomatous pteropods (Limacina spp.) in the Indian sector of the Southern Ocean during austral summer |
title_sort |
interannual variability in euthecosomatous pteropods (limacina spp.) in the indian sector of the southern ocean during austral summer |
publisher |
National Institute of Polar Research |
publishDate |
2016 |
url |
https://doi.org/10.15094/00012672 https://doaj.org/article/4222b985e9824576a1db1087b69a8d6f |
geographic |
Antarctic Southern Ocean Austral Indian |
geographic_facet |
Antarctic Southern Ocean Austral Indian |
genre |
Antarc* Antarctic Ocean acidification Southern Ocean |
genre_facet |
Antarc* Antarctic Ocean acidification Southern Ocean |
op_source |
Antarctic Record, Vol 60, Pp 35-48 (2016) |
op_relation |
http://doi.org/10.15094/00012672 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00012672 0085-7289 2432-079X https://doaj.org/article/4222b985e9824576a1db1087b69a8d6f |
op_doi |
https://doi.org/10.15094/00012672 |
_version_ |
1766259505680613376 |