Summer microplankton community structure across the Scotia Sea: implications for biological carbon export
During the austral summer of 2008, we carried out a high resolution survey of the microplankton communities along a south to north transect covering a range of environments across the Scotia Sea, Southern Ocean; high and low productivity, sea-ice to open water conditions, and over a number of oceano...
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ftnerc:oai:nora.nerc.ac.uk:10546 2023-05-15T13:45:10+02:00 Summer microplankton community structure across the Scotia Sea: implications for biological carbon export Korb, R.E. Whitehouse, M.J. Gordon, M. Ward, P. Poulton, A.J. 2010 text http://nora.nerc.ac.uk/id/eprint/10546/ https://nora.nerc.ac.uk/id/eprint/10546/1/bg-7-343-2010.pdf http://www.biogeosciences.net/7/343/2010/bg-7-343-2010.pdf en eng Copernicus Publications https://nora.nerc.ac.uk/id/eprint/10546/1/bg-7-343-2010.pdf Korb, R.E.; Whitehouse, M.J.; Gordon, M.; Ward, P.; Poulton, A.J. 2010 Summer microplankton community structure across the Scotia Sea: implications for biological carbon export. Biogeosciences, 7 (1). 343-356. https://doi.org/10.5194/bg-7-343-2010 <https://doi.org/10.5194/bg-7-343-2010> Zoology Ecology and Environment Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.5194/bg-7-343-2010 2023-02-04T19:26:45Z During the austral summer of 2008, we carried out a high resolution survey of the microplankton communities along a south to north transect covering a range of environments across the Scotia Sea, Southern Ocean; high and low productivity, sea-ice to open water conditions, and over a number of oceanographic fronts and bathymetric features. Cluster analysis revealed five distinct communities that were geographically constrained by physical features of bathymetry and fronts. From south to north the communities were: (1) the South Orkney group, a mixed community of naked dinoflagellates and heavily silicified diatoms, (2) southern Scotia Sea, a mixed community of cyptophytes and naked dinoflagellates, (3) central Scotia Sea, dominated by naked dinoflagellates, (4) southwest of the island of South Georgia, lightly silicified diatoms and naked dinoflagellates (5) northwest of South Georgia, dominated by diatoms. Data from a previous summer cruise (2003) to the Scotia Sea followed a similar pattern of community distribution. MODIS images, Chlorophyll a and macronutrient deficits revealed dense phytoplankton blooms occurred around the island of South Georgia, were absent near the ice edge and in the central Scotia Sea and were moderate in the southern Scotia Sea. Using these environmental factors, together with community composition, we propose that south of the Southern Antarctic Circumpolar Current Front, biogenic silica is preferentially exported and north of the front, in the vicinity of South Georgia, carbon is exported to depth. Article in Journal/Newspaper Antarc* Antarctic Scotia Sea Sea ice Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Austral Scotia Sea Southern Ocean Biogeosciences 7 1 343 356 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Zoology Ecology and Environment |
spellingShingle |
Zoology Ecology and Environment Korb, R.E. Whitehouse, M.J. Gordon, M. Ward, P. Poulton, A.J. Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
topic_facet |
Zoology Ecology and Environment |
description |
During the austral summer of 2008, we carried out a high resolution survey of the microplankton communities along a south to north transect covering a range of environments across the Scotia Sea, Southern Ocean; high and low productivity, sea-ice to open water conditions, and over a number of oceanographic fronts and bathymetric features. Cluster analysis revealed five distinct communities that were geographically constrained by physical features of bathymetry and fronts. From south to north the communities were: (1) the South Orkney group, a mixed community of naked dinoflagellates and heavily silicified diatoms, (2) southern Scotia Sea, a mixed community of cyptophytes and naked dinoflagellates, (3) central Scotia Sea, dominated by naked dinoflagellates, (4) southwest of the island of South Georgia, lightly silicified diatoms and naked dinoflagellates (5) northwest of South Georgia, dominated by diatoms. Data from a previous summer cruise (2003) to the Scotia Sea followed a similar pattern of community distribution. MODIS images, Chlorophyll a and macronutrient deficits revealed dense phytoplankton blooms occurred around the island of South Georgia, were absent near the ice edge and in the central Scotia Sea and were moderate in the southern Scotia Sea. Using these environmental factors, together with community composition, we propose that south of the Southern Antarctic Circumpolar Current Front, biogenic silica is preferentially exported and north of the front, in the vicinity of South Georgia, carbon is exported to depth. |
format |
Article in Journal/Newspaper |
author |
Korb, R.E. Whitehouse, M.J. Gordon, M. Ward, P. Poulton, A.J. |
author_facet |
Korb, R.E. Whitehouse, M.J. Gordon, M. Ward, P. Poulton, A.J. |
author_sort |
Korb, R.E. |
title |
Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
title_short |
Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
title_full |
Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
title_fullStr |
Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
title_full_unstemmed |
Summer microplankton community structure across the Scotia Sea: implications for biological carbon export |
title_sort |
summer microplankton community structure across the scotia sea: implications for biological carbon export |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/10546/ https://nora.nerc.ac.uk/id/eprint/10546/1/bg-7-343-2010.pdf http://www.biogeosciences.net/7/343/2010/bg-7-343-2010.pdf |
geographic |
Antarctic Austral Scotia Sea Southern Ocean |
geographic_facet |
Antarctic Austral Scotia Sea Southern Ocean |
genre |
Antarc* Antarctic Scotia Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Scotia Sea Sea ice Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/10546/1/bg-7-343-2010.pdf Korb, R.E.; Whitehouse, M.J.; Gordon, M.; Ward, P.; Poulton, A.J. 2010 Summer microplankton community structure across the Scotia Sea: implications for biological carbon export. Biogeosciences, 7 (1). 343-356. https://doi.org/10.5194/bg-7-343-2010 <https://doi.org/10.5194/bg-7-343-2010> |
op_doi |
https://doi.org/10.5194/bg-7-343-2010 |
container_title |
Biogeosciences |
container_volume |
7 |
container_issue |
1 |
container_start_page |
343 |
op_container_end_page |
356 |
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1766214168474550272 |