Krill and zooplankton in the Western Prydz Bay region, September-November 1985
During the third Antarctic Division BIOMASS Experiment (ADBEX III) cruise (September to November 1985) to the western Prydz Bay region, Antarctica, a net sampling program was carried out using RMT 1+8 and ORI-2000 nets, in the pack-ice zone when the sea ice was near to its maximum northern extent. F...
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Australian Antarctic Division/Australian Antarctic Division
1989
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ftnipr:oai:nipr.repo.nii.ac.jp:00005047 2023-05-15T13:49:02+02:00 Krill and zooplankton in the Western Prydz Bay region, September-November 1985 Hosie,G.W. Stolp,M. 1989-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5047 http://id.nii.ac.jp/1291/00005047/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5047&item_no=1&attribute_id=18&file_no=1 en eng Australian Antarctic Division/Australian Antarctic Division National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5047 http://id.nii.ac.jp/1291/00005047/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 2, 34-45(1989-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5047&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1989 ftnipr 2023-02-11T20:10:44Z During the third Antarctic Division BIOMASS Experiment (ADBEX III) cruise (September to November 1985) to the western Prydz Bay region, Antarctica, a net sampling program was carried out using RMT 1+8 and ORI-2000 nets, in the pack-ice zone when the sea ice was near to its maximum northern extent. From these samples the composition and abundance of euphausiids and other zooplankton were investigated. A total of 75 species of zooplankton and ichthyoplankton were fully identified, as well as 15 other major taxa. The copepod Rhincalanus gigas was the most abundant zooplankter, with Thysanoessa macrura the most abundant euphausiid. The two chaetognaths Sagitta gazellae and Eukrohnia hamata were the predominant carnivores. Major zooplankton species appeared to be well established under the sea ice in October, compared with abundance estimates from the previous summer cruises (January to March). Early larval stages of Thysanoessa macrura and Euphausia frigida were abundant in October, a result of spawning as early as September and late stage furcilia larvae of Euphausia superba were also collected in late September-early October. A supplementary diving program found large numbers of krill under the sea ice off the Enderby Land coast showing that krill remain inshore during pack-ice development. The previous laboratory and field studies have shown that adult Euphausia superba either cease growing or shrink in size during winter due to the lack of food. Results from this study suggests that the smaller zooplankton may not find food limiting in winter. Report Antarc* Antarctic Antarctica Enderby Land Euphausia superba Polar Biology Proceedings of the NIPR Symposium on Polar Biology Prydz Bay Sea ice Thysanoessa macrura National Institute of Polar Research Repository, Japan Antarctic Prydz Bay |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
During the third Antarctic Division BIOMASS Experiment (ADBEX III) cruise (September to November 1985) to the western Prydz Bay region, Antarctica, a net sampling program was carried out using RMT 1+8 and ORI-2000 nets, in the pack-ice zone when the sea ice was near to its maximum northern extent. From these samples the composition and abundance of euphausiids and other zooplankton were investigated. A total of 75 species of zooplankton and ichthyoplankton were fully identified, as well as 15 other major taxa. The copepod Rhincalanus gigas was the most abundant zooplankter, with Thysanoessa macrura the most abundant euphausiid. The two chaetognaths Sagitta gazellae and Eukrohnia hamata were the predominant carnivores. Major zooplankton species appeared to be well established under the sea ice in October, compared with abundance estimates from the previous summer cruises (January to March). Early larval stages of Thysanoessa macrura and Euphausia frigida were abundant in October, a result of spawning as early as September and late stage furcilia larvae of Euphausia superba were also collected in late September-early October. A supplementary diving program found large numbers of krill under the sea ice off the Enderby Land coast showing that krill remain inshore during pack-ice development. The previous laboratory and field studies have shown that adult Euphausia superba either cease growing or shrink in size during winter due to the lack of food. Results from this study suggests that the smaller zooplankton may not find food limiting in winter. |
format |
Report |
author |
Hosie,G.W. Stolp,M. |
spellingShingle |
Hosie,G.W. Stolp,M. Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
author_facet |
Hosie,G.W. Stolp,M. |
author_sort |
Hosie,G.W. |
title |
Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
title_short |
Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
title_full |
Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
title_fullStr |
Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
title_full_unstemmed |
Krill and zooplankton in the Western Prydz Bay region, September-November 1985 |
title_sort |
krill and zooplankton in the western prydz bay region, september-november 1985 |
publisher |
Australian Antarctic Division/Australian Antarctic Division |
publishDate |
1989 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5047 http://id.nii.ac.jp/1291/00005047/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5047&item_no=1&attribute_id=18&file_no=1 |
geographic |
Antarctic Prydz Bay |
geographic_facet |
Antarctic Prydz Bay |
genre |
Antarc* Antarctic Antarctica Enderby Land Euphausia superba Polar Biology Proceedings of the NIPR Symposium on Polar Biology Prydz Bay Sea ice Thysanoessa macrura |
genre_facet |
Antarc* Antarctic Antarctica Enderby Land Euphausia superba Polar Biology Proceedings of the NIPR Symposium on Polar Biology Prydz Bay Sea ice Thysanoessa macrura |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5047 http://id.nii.ac.jp/1291/00005047/ AA10819561 Proceedings of the NIPR Symposium on Polar Biology, 2, 34-45(1989-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5047&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250652767354880 |