Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean
During the last few years, extensive sea ice melting in the Arctic due to climate change has been detected, which could potentially modify the organic carbon fluxes in these waters. In this study, the effect of sea ice melting on bacterial carbon channelling by phages and protists has been evaluated...
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ftcsic:oai:digital.csic.es:10261/59847 2024-02-11T10:00:29+01:00 Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean Boras, Julia A. Sala, M. Montserrat Arrieta López de Uralde, Jesús M. Sà, Elisabet L. Felipe, Jordi Duarte, Carlos M. Vaqué, Dolors Agustí, Susana 2010 http://hdl.handle.net/10261/59847 https://doi.org/10.1007/s00300-010-0798-8 en eng Springer doi:10.1007/s00300-010-0798-8 issn: 0722-4060 Polar Biology 33: 1695-1707 (2010) http://hdl.handle.net/10261/59847 none artículo http://purl.org/coar/resource_type/c_6501 2010 ftcsic https://doi.org/10.1007/s00300-010-0798-8 2024-01-16T09:42:17Z During the last few years, extensive sea ice melting in the Arctic due to climate change has been detected, which could potentially modify the organic carbon fluxes in these waters. In this study, the effect of sea ice melting on bacterial carbon channelling by phages and protists has been evaluated in the northern Greenland Sea and Arctic Ocean. Grazing on bacteria by protists was evaluated using the FLB disappearance method. Lysis of bacteria due to viral infections was measured using the virus reduction approach. Losses of bacterial production caused by protists (PMMBP) dominated losses caused by viruses (VMMBP) throughout the study. Lysogenic viral production was detected in 7 out of 21 measurements and constituted from 33.9 to 100.0% of the total viral production. Significantly higher PMMBP and lower VMMBP were detected in waters affected by ice melting compared with unaffected waters. Consequently, significantly more bacterial carbon was channelled to the higher trophic levels in affected waters (13.05 ± 5.98 μgC l-1 day-1) than in unaffected waters (8.91 ± 8.33 μgC l-1 day-1). Viruses channelled 2.63 ± 2.45 μgC l-1 day-1 in affected waters and 4.27 ± 5.54 μgC l-1 day-1 in unaffected waters. We conclude that sea ice melting in the Arctic could modify the carbon flow through the microbial food web. This process may be especially important in the case of massive sea ice melting due to climate change. © 2010 Springer-Verlag. This study was supported by the following projects: ATOS, PROCAVIR and MICROVIS (POL2006-00550/CTM, CTM2004-04404-CO2-00/MAR, CTM2007-62140) funded by the Spanish Ministerio de Ciencia e Innovación and by the E.U. project Arctic Tipping Points (ATP, contract Peer Reviewed Article in Journal/Newspaper Arctic Arctic Ocean Climate change Greenland Greenland Sea Polar Biology Sea ice Digital.CSIC (Spanish National Research Council) Arctic Arctic Ocean Greenland Polar Biology 33 12 1695 1707 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
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ftcsic |
language |
English |
description |
During the last few years, extensive sea ice melting in the Arctic due to climate change has been detected, which could potentially modify the organic carbon fluxes in these waters. In this study, the effect of sea ice melting on bacterial carbon channelling by phages and protists has been evaluated in the northern Greenland Sea and Arctic Ocean. Grazing on bacteria by protists was evaluated using the FLB disappearance method. Lysis of bacteria due to viral infections was measured using the virus reduction approach. Losses of bacterial production caused by protists (PMMBP) dominated losses caused by viruses (VMMBP) throughout the study. Lysogenic viral production was detected in 7 out of 21 measurements and constituted from 33.9 to 100.0% of the total viral production. Significantly higher PMMBP and lower VMMBP were detected in waters affected by ice melting compared with unaffected waters. Consequently, significantly more bacterial carbon was channelled to the higher trophic levels in affected waters (13.05 ± 5.98 μgC l-1 day-1) than in unaffected waters (8.91 ± 8.33 μgC l-1 day-1). Viruses channelled 2.63 ± 2.45 μgC l-1 day-1 in affected waters and 4.27 ± 5.54 μgC l-1 day-1 in unaffected waters. We conclude that sea ice melting in the Arctic could modify the carbon flow through the microbial food web. This process may be especially important in the case of massive sea ice melting due to climate change. © 2010 Springer-Verlag. This study was supported by the following projects: ATOS, PROCAVIR and MICROVIS (POL2006-00550/CTM, CTM2004-04404-CO2-00/MAR, CTM2007-62140) funded by the Spanish Ministerio de Ciencia e Innovación and by the E.U. project Arctic Tipping Points (ATP, contract Peer Reviewed |
format |
Article in Journal/Newspaper |
author |
Boras, Julia A. Sala, M. Montserrat Arrieta López de Uralde, Jesús M. Sà, Elisabet L. Felipe, Jordi Duarte, Carlos M. Vaqué, Dolors Agustí, Susana |
spellingShingle |
Boras, Julia A. Sala, M. Montserrat Arrieta López de Uralde, Jesús M. Sà, Elisabet L. Felipe, Jordi Duarte, Carlos M. Vaqué, Dolors Agustí, Susana Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
author_facet |
Boras, Julia A. Sala, M. Montserrat Arrieta López de Uralde, Jesús M. Sà, Elisabet L. Felipe, Jordi Duarte, Carlos M. Vaqué, Dolors Agustí, Susana |
author_sort |
Boras, Julia A. |
title |
Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
title_short |
Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
title_full |
Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
title_fullStr |
Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
title_full_unstemmed |
Effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the Arctic Ocean |
title_sort |
effect of ice melting on bacterial carbon fluxes channelled by viruses and protists in the arctic ocean |
publisher |
Springer |
publishDate |
2010 |
url |
http://hdl.handle.net/10261/59847 https://doi.org/10.1007/s00300-010-0798-8 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Climate change Greenland Greenland Sea Polar Biology Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change Greenland Greenland Sea Polar Biology Sea ice |
op_relation |
doi:10.1007/s00300-010-0798-8 issn: 0722-4060 Polar Biology 33: 1695-1707 (2010) http://hdl.handle.net/10261/59847 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s00300-010-0798-8 |
container_title |
Polar Biology |
container_volume |
33 |
container_issue |
12 |
container_start_page |
1695 |
op_container_end_page |
1707 |
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1790596199337689088 |