Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003
Field surveys were conducted along 140°E in the Southern Ocean north of Terre Adelie during three cruises: the KH cruise by RV Hakuho Maru, and TC1 and TC2 cruises by RV Tangaroa during the austral summers of 2002 and 2003. Macrozooplankton were sampled using a Rectangular Midwater Trawl (RMT 8: mes...
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National Institute of Polar Research
2008
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Online Access: | https://doi.org/10.15094/00009428 https://doaj.org/article/08c96f92b7dc4fcfa7b842dabb83f9a7 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:08c96f92b7dc4fcfa7b842dabb83f9a7 2023-05-15T13:42:31+02:00 Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 Atsushi Tanimura Nobukazu Oka So Kawaguchi Jun Nishikawa Kunio T. Takahashi Ryusuke Makabe Graham Hosie Tsuneo Odate 2008-03-01 https://doi.org/10.15094/00009428 https://doaj.org/article/08c96f92b7dc4fcfa7b842dabb83f9a7 en other eng National Institute of Polar Research doi:10.15094/00009428 0085-7289 2432-079X https://doaj.org/article/08c96f92b7dc4fcfa7b842dabb83f9a7 undefined Antarctic Record, Vol 52, Iss 1, Pp 1-8 (2008) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2008 fttriple https://doi.org/10.15094/00009428 2023-01-22T18:10:44Z Field surveys were conducted along 140°E in the Southern Ocean north of Terre Adelie during three cruises: the KH cruise by RV Hakuho Maru, and TC1 and TC2 cruises by RV Tangaroa during the austral summers of 2002 and 2003. Macrozooplankton were sampled using a Rectangular Midwater Trawl (RMT 8: mesh size: 4.5mm; effective mouth area: 8m2) along each transect. Macrozooplankton communities were separated by the Southern Boundary of the Antarctic Circumpolar Current (SB-ACC) based on cluster analysis. North of the SB-ACC, macrozooplankton assemblages comprised species of the northern oceanic community characterized by Salpa thompsoni, Euphausia frigida and Themisto gaudichaudii, while south of the SB-ACC, macrozooplankton assemblages were numerically dominated by Euphausia superba and/or Euphausia crystallorophias. It is suggested that the SB-ACC functions as the major biogeographic barrier to separate the macrozooplankton communities, and the contributions of macro- and meso-zooplankton to total zooplankton abundance varies seasonally as well as regionally in the Indian sector of the Southern Ocean crossing the SB-ACC. Article in Journal/Newspaper Antarc* Antarctic Euphausia superba Southern Ocean Unknown Antarctic Southern Ocean The Antarctic Austral Indian |
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English |
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geo envir Atsushi Tanimura Nobukazu Oka So Kawaguchi Jun Nishikawa Kunio T. Takahashi Ryusuke Makabe Graham Hosie Tsuneo Odate Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
topic_facet |
geo envir |
description |
Field surveys were conducted along 140°E in the Southern Ocean north of Terre Adelie during three cruises: the KH cruise by RV Hakuho Maru, and TC1 and TC2 cruises by RV Tangaroa during the austral summers of 2002 and 2003. Macrozooplankton were sampled using a Rectangular Midwater Trawl (RMT 8: mesh size: 4.5mm; effective mouth area: 8m2) along each transect. Macrozooplankton communities were separated by the Southern Boundary of the Antarctic Circumpolar Current (SB-ACC) based on cluster analysis. North of the SB-ACC, macrozooplankton assemblages comprised species of the northern oceanic community characterized by Salpa thompsoni, Euphausia frigida and Themisto gaudichaudii, while south of the SB-ACC, macrozooplankton assemblages were numerically dominated by Euphausia superba and/or Euphausia crystallorophias. It is suggested that the SB-ACC functions as the major biogeographic barrier to separate the macrozooplankton communities, and the contributions of macro- and meso-zooplankton to total zooplankton abundance varies seasonally as well as regionally in the Indian sector of the Southern Ocean crossing the SB-ACC. |
format |
Article in Journal/Newspaper |
author |
Atsushi Tanimura Nobukazu Oka So Kawaguchi Jun Nishikawa Kunio T. Takahashi Ryusuke Makabe Graham Hosie Tsuneo Odate |
author_facet |
Atsushi Tanimura Nobukazu Oka So Kawaguchi Jun Nishikawa Kunio T. Takahashi Ryusuke Makabe Graham Hosie Tsuneo Odate |
author_sort |
Atsushi Tanimura |
title |
Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
title_short |
Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
title_full |
Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
title_fullStr |
Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
title_full_unstemmed |
Distribution pattern of macrozooplankton along the 140°E meridian in the Southern Ocean during austral summer 2002 and 2003 |
title_sort |
distribution pattern of macrozooplankton along the 140°e meridian in the southern ocean during austral summer 2002 and 2003 |
publisher |
National Institute of Polar Research |
publishDate |
2008 |
url |
https://doi.org/10.15094/00009428 https://doaj.org/article/08c96f92b7dc4fcfa7b842dabb83f9a7 |
geographic |
Antarctic Southern Ocean The Antarctic Austral Indian |
geographic_facet |
Antarctic Southern Ocean The Antarctic Austral Indian |
genre |
Antarc* Antarctic Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Euphausia superba Southern Ocean |
op_source |
Antarctic Record, Vol 52, Iss 1, Pp 1-8 (2008) |
op_relation |
doi:10.15094/00009428 0085-7289 2432-079X https://doaj.org/article/08c96f92b7dc4fcfa7b842dabb83f9a7 |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00009428 |
_version_ |
1766169026507046912 |