Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003
Physical ocean processes (ice-melt, island run-off and upwelling of nutrients) were hypothesised to affect the bacterioplankton composition in the surface mixed layer of the Scotia Sea during the austral summer of 2003, and this was investigated using flow cytometry and catalysed reporter deposition...
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ftsouthampton:oai:eprints.soton.ac.uk:43962 2023-07-30T03:57:58+02:00 Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 Topping, J.N. Heywood, J.L. Ward, P. Zubkov, M.V. 2006 https://eprints.soton.ac.uk/43962/ http://www.int-res.com/articles/ame2006/45/a045p229.pdf unknown Topping, J.N., Heywood, J.L., Ward, P. and Zubkov, M.V. (2006) Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003. Aquatic Microbial Ecology, 45 (3), 229-235. Article PeerReviewed 2006 ftsouthampton 2023-07-09T20:50:48Z Physical ocean processes (ice-melt, island run-off and upwelling of nutrients) were hypothesised to affect the bacterioplankton composition in the surface mixed layer of the Scotia Sea during the austral summer of 2003, and this was investigated using flow cytometry and catalysed reporter deposition fluorescence in situ hybridisation (CARD-FISH) techniques. The bacterioplankton was composed predominantly of Alphaproteobacteria (PB), comprising SAR11, Roseobacterspp. and SAR116 groups, followed by Sphingobacteria/Flavobacteria and Gammaproteobacteria, including SAR86. Two distinct bacterioplankton communities were identified, largely based on bacterioplankton abundance, which varied from 0.3 ± 0.06 × 10 6 cells ml –1 in the west to 0.8 ± 0.3 × 10 6 cells ml –1 in the east, and a corresponding difference in SAR11 percentages of 30 ± 15% in the west compared to 5 ± 5% in the east. The western community was present in waters that were largely in an over-wintered, pre-bloom condition. The eastern bacterioplankton community was associated with phytoplankton blooms developed within the eastern Scotia Sea nutrient upwelling zone, where the Antarctic Circumpolar Current (ACC) encounters the shallow bathymetry associated with the Scotia Arc, in combination with seasonal ice-melt and island effects that enabled surface water stratification. Article in Journal/Newspaper Antarc* Antarctic Antarctica Scotia Sea University of Southampton: e-Prints Soton Antarctic The Antarctic Austral Scotia Sea |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
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unknown |
description |
Physical ocean processes (ice-melt, island run-off and upwelling of nutrients) were hypothesised to affect the bacterioplankton composition in the surface mixed layer of the Scotia Sea during the austral summer of 2003, and this was investigated using flow cytometry and catalysed reporter deposition fluorescence in situ hybridisation (CARD-FISH) techniques. The bacterioplankton was composed predominantly of Alphaproteobacteria (PB), comprising SAR11, Roseobacterspp. and SAR116 groups, followed by Sphingobacteria/Flavobacteria and Gammaproteobacteria, including SAR86. Two distinct bacterioplankton communities were identified, largely based on bacterioplankton abundance, which varied from 0.3 ± 0.06 × 10 6 cells ml –1 in the west to 0.8 ± 0.3 × 10 6 cells ml –1 in the east, and a corresponding difference in SAR11 percentages of 30 ± 15% in the west compared to 5 ± 5% in the east. The western community was present in waters that were largely in an over-wintered, pre-bloom condition. The eastern bacterioplankton community was associated with phytoplankton blooms developed within the eastern Scotia Sea nutrient upwelling zone, where the Antarctic Circumpolar Current (ACC) encounters the shallow bathymetry associated with the Scotia Arc, in combination with seasonal ice-melt and island effects that enabled surface water stratification. |
format |
Article in Journal/Newspaper |
author |
Topping, J.N. Heywood, J.L. Ward, P. Zubkov, M.V. |
spellingShingle |
Topping, J.N. Heywood, J.L. Ward, P. Zubkov, M.V. Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
author_facet |
Topping, J.N. Heywood, J.L. Ward, P. Zubkov, M.V. |
author_sort |
Topping, J.N. |
title |
Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
title_short |
Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
title_full |
Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
title_fullStr |
Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
title_full_unstemmed |
Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003 |
title_sort |
bacterioplankton composition in the scotia sea, antarctica, during the austral summer of 2003 |
publishDate |
2006 |
url |
https://eprints.soton.ac.uk/43962/ http://www.int-res.com/articles/ame2006/45/a045p229.pdf |
geographic |
Antarctic The Antarctic Austral Scotia Sea |
geographic_facet |
Antarctic The Antarctic Austral Scotia Sea |
genre |
Antarc* Antarctic Antarctica Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctica Scotia Sea |
op_relation |
Topping, J.N., Heywood, J.L., Ward, P. and Zubkov, M.V. (2006) Bacterioplankton composition in the Scotia Sea, Antarctica, during the austral summer of 2003. Aquatic Microbial Ecology, 45 (3), 229-235. |
_version_ |
1772820550274514944 |