Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms
peer reviewed Although algal growth in the iron-deficient Southern Ocean surface waters is generally low, there is considerable evidence that winter sea ice contains high amounts of iron and organic matter leading to ice-edge blooms during austral spring. We used field observations and ship-based mi...
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2013
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Online Access: | https://orbi.uliege.be/handle/2268/156946 https://doi.org/10.1007/s00300-013-1368-7 |
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ftorbi:oai:orbi.ulg.ac.be:2268/156946 2024-04-21T07:48:53+00:00 Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms Lannuzel, D. Schoenmann, V. Dumont, I. Content, M. de Jong, J. Tison, Jean-Louis Delille, Bruno Becquevort, S. 2013 https://orbi.uliege.be/handle/2268/156946 https://doi.org/10.1007/s00300-013-1368-7 en eng Springer Science & Business Media B.V. http://link.springer.com/article/10.1007/s00300-013-1368-7 urn:issn:0722-4060 urn:issn:1432-2056 https://orbi.uliege.be/handle/2268/156946 info:hdl:2268/156946 doi:10.1007/s00300-013-1368-7 scopus-id:2-s2.0-84883775824 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Polar Biology, 36 (10), 1483-1497 (2013) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2013 ftorbi https://doi.org/10.1007/s00300-013-1368-7 2024-03-27T14:54:04Z peer reviewed Although algal growth in the iron-deficient Southern Ocean surface waters is generally low, there is considerable evidence that winter sea ice contains high amounts of iron and organic matter leading to ice-edge blooms during austral spring. We used field observations and ship-based microcosm experiments to study the effect of the seeding by sea ice microorganisms, and the fertilization by organic matter and iron on the planktonic community at the onset of spring/summer in the Weddell Sea. Pack ice was a major source of autotrophs resulting in a ninefold to 27-fold increase in the sea ice-fertilized seawater microcosm compared to the ice-free seawater microcosm. However, heterotrophs were released in lower numbers (only a 2- to 6-fold increase). Pack ice was also an important source of dissolved organic matter for the planktonic community. Small algae (<10 μm) and bacteria released from melting sea ice were able to thrive in seawater. Field observations show that the supply of iron from melting sea ice had occurred well before our arrival onsite, and the supply of iron to the microcosms was therefore low. We finally ran a “sequential melting” experiment to monitor the release of ice constituents in seawater. Brine drainage occurred first and was associated with the release of dissolved elements (salts, dissolved organic carbon and dissolved iron). Particulate organic carbon and particulate iron were released with low-salinity waters at a later stage. Article in Journal/Newspaper Antarc* Antarctic Polar Biology Sea ice Southern Ocean Weddell Sea University of Liège: ORBi (Open Repository and Bibliography) Polar Biology 36 10 1483 1497 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Lannuzel, D. Schoenmann, V. Dumont, I. Content, M. de Jong, J. Tison, Jean-Louis Delille, Bruno Becquevort, S. Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Although algal growth in the iron-deficient Southern Ocean surface waters is generally low, there is considerable evidence that winter sea ice contains high amounts of iron and organic matter leading to ice-edge blooms during austral spring. We used field observations and ship-based microcosm experiments to study the effect of the seeding by sea ice microorganisms, and the fertilization by organic matter and iron on the planktonic community at the onset of spring/summer in the Weddell Sea. Pack ice was a major source of autotrophs resulting in a ninefold to 27-fold increase in the sea ice-fertilized seawater microcosm compared to the ice-free seawater microcosm. However, heterotrophs were released in lower numbers (only a 2- to 6-fold increase). Pack ice was also an important source of dissolved organic matter for the planktonic community. Small algae (<10 μm) and bacteria released from melting sea ice were able to thrive in seawater. Field observations show that the supply of iron from melting sea ice had occurred well before our arrival onsite, and the supply of iron to the microcosms was therefore low. We finally ran a “sequential melting” experiment to monitor the release of ice constituents in seawater. Brine drainage occurred first and was associated with the release of dissolved elements (salts, dissolved organic carbon and dissolved iron). Particulate organic carbon and particulate iron were released with low-salinity waters at a later stage. |
format |
Article in Journal/Newspaper |
author |
Lannuzel, D. Schoenmann, V. Dumont, I. Content, M. de Jong, J. Tison, Jean-Louis Delille, Bruno Becquevort, S. |
author_facet |
Lannuzel, D. Schoenmann, V. Dumont, I. Content, M. de Jong, J. Tison, Jean-Louis Delille, Bruno Becquevort, S. |
author_sort |
Lannuzel, D. |
title |
Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
title_short |
Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
title_full |
Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
title_fullStr |
Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
title_full_unstemmed |
Effect of melting Antarctic sea ice on the fate of microbial communities studied in microcosms |
title_sort |
effect of melting antarctic sea ice on the fate of microbial communities studied in microcosms |
publisher |
Springer Science & Business Media B.V. |
publishDate |
2013 |
url |
https://orbi.uliege.be/handle/2268/156946 https://doi.org/10.1007/s00300-013-1368-7 |
genre |
Antarc* Antarctic Polar Biology Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Polar Biology Sea ice Southern Ocean Weddell Sea |
op_source |
Polar Biology, 36 (10), 1483-1497 (2013) |
op_relation |
http://link.springer.com/article/10.1007/s00300-013-1368-7 urn:issn:0722-4060 urn:issn:1432-2056 https://orbi.uliege.be/handle/2268/156946 info:hdl:2268/156946 doi:10.1007/s00300-013-1368-7 scopus-id:2-s2.0-84883775824 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-013-1368-7 |
container_title |
Polar Biology |
container_volume |
36 |
container_issue |
10 |
container_start_page |
1483 |
op_container_end_page |
1497 |
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1796951986757697536 |