Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena
The surface ocean absorbs large quantities of the CO2 emitted to the atmosphere from human activities. As this CO2 dissolves in seawater, it reacts to form carbonic acid. While this phenomenon, called ocean acidification, has been found to adversely affect many calcifying organisms, some photosynthe...
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Copernicus Publications (EGU)
2009
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Online Access: | https://oceanrep.geomar.de/id/eprint/5629/ https://oceanrep.geomar.de/id/eprint/5629/1/824_Czerny_2009_InfluenceOfElevatedCo2Concentrations_Artzeit_pubid12481.pdf http://www.biogeosciences.net/6/1865/2009/bg-6-1865-2009.html https://doi.org/10.5194/bg-6-1865-2009 |
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ftoceanrep:oai:oceanrep.geomar.de:5629 2023-05-15T15:52:44+02:00 Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena Czerny, Jan Barcelos e Ramos, Joana Riebesell, Ulf 2009 text https://oceanrep.geomar.de/id/eprint/5629/ https://oceanrep.geomar.de/id/eprint/5629/1/824_Czerny_2009_InfluenceOfElevatedCo2Concentrations_Artzeit_pubid12481.pdf http://www.biogeosciences.net/6/1865/2009/bg-6-1865-2009.html https://doi.org/10.5194/bg-6-1865-2009 en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/5629/1/824_Czerny_2009_InfluenceOfElevatedCo2Concentrations_Artzeit_pubid12481.pdf Czerny, J., Barcelos e Ramos, J. and Riebesell, U. (2009) Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena. Open Access Biogeosciences (BG), 6 (9). pp. 1865-1875. DOI 10.5194/bg-6-1865-2009 <https://doi.org/10.5194/bg-6-1865-2009>. doi:10.5194/bg-6-1865-2009 info:eu-repo/semantics/openAccess Article PeerReviewed 2009 ftoceanrep https://doi.org/10.5194/bg-6-1865-2009 2023-04-07T14:51:22Z The surface ocean absorbs large quantities of the CO2 emitted to the atmosphere from human activities. As this CO2 dissolves in seawater, it reacts to form carbonic acid. While this phenomenon, called ocean acidification, has been found to adversely affect many calcifying organisms, some photosynthetic organisms appear to benefit from increasing [CO2]. Among these is the cyanobacterium Trichodesmium, a predominant diazotroph (nitrogen-fixing) in large parts of the oligotrophic oceans, which responded with increased carbon and nitrogen fixation at elevated pCO2. With the mechanism underlying this CO2 stimulation still unknown, the question arises whether this is a common response of diazotrophic cyanobacteria. In this study we therefore investigate the physiological response of Nodularia spumigena, a heterocystous bloom-forming diazotroph of the Baltic Sea, to CO2-induced changes in seawater carbonate chemistry. N. spumigena reacted to seawater acidification/carbonation with reduced cell division rates and nitrogen fixation rates, accompanied by significant changes in carbon and phosphorus quota and elemental composition of the formed biomass. Possible explanations for the contrasting physiological responses of Nodularia compared to Trichodesmium may be found in the different ecological strategies of non-heterocystous (Trichodesmium) and heterocystous (Nodularia) cyanobacteria. Article in Journal/Newspaper Carbonic acid Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Biogeosciences 6 9 1865 1875 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The surface ocean absorbs large quantities of the CO2 emitted to the atmosphere from human activities. As this CO2 dissolves in seawater, it reacts to form carbonic acid. While this phenomenon, called ocean acidification, has been found to adversely affect many calcifying organisms, some photosynthetic organisms appear to benefit from increasing [CO2]. Among these is the cyanobacterium Trichodesmium, a predominant diazotroph (nitrogen-fixing) in large parts of the oligotrophic oceans, which responded with increased carbon and nitrogen fixation at elevated pCO2. With the mechanism underlying this CO2 stimulation still unknown, the question arises whether this is a common response of diazotrophic cyanobacteria. In this study we therefore investigate the physiological response of Nodularia spumigena, a heterocystous bloom-forming diazotroph of the Baltic Sea, to CO2-induced changes in seawater carbonate chemistry. N. spumigena reacted to seawater acidification/carbonation with reduced cell division rates and nitrogen fixation rates, accompanied by significant changes in carbon and phosphorus quota and elemental composition of the formed biomass. Possible explanations for the contrasting physiological responses of Nodularia compared to Trichodesmium may be found in the different ecological strategies of non-heterocystous (Trichodesmium) and heterocystous (Nodularia) cyanobacteria. |
format |
Article in Journal/Newspaper |
author |
Czerny, Jan Barcelos e Ramos, Joana Riebesell, Ulf |
spellingShingle |
Czerny, Jan Barcelos e Ramos, Joana Riebesell, Ulf Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
author_facet |
Czerny, Jan Barcelos e Ramos, Joana Riebesell, Ulf |
author_sort |
Czerny, Jan |
title |
Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_short |
Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_full |
Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_fullStr |
Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_full_unstemmed |
Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_sort |
influence of elevated co2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium nodularia spumigena |
publisher |
Copernicus Publications (EGU) |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/5629/ https://oceanrep.geomar.de/id/eprint/5629/1/824_Czerny_2009_InfluenceOfElevatedCo2Concentrations_Artzeit_pubid12481.pdf http://www.biogeosciences.net/6/1865/2009/bg-6-1865-2009.html https://doi.org/10.5194/bg-6-1865-2009 |
genre |
Carbonic acid Ocean acidification |
genre_facet |
Carbonic acid Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/5629/1/824_Czerny_2009_InfluenceOfElevatedCo2Concentrations_Artzeit_pubid12481.pdf Czerny, J., Barcelos e Ramos, J. and Riebesell, U. (2009) Influence of elevated CO2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena. Open Access Biogeosciences (BG), 6 (9). pp. 1865-1875. DOI 10.5194/bg-6-1865-2009 <https://doi.org/10.5194/bg-6-1865-2009>. doi:10.5194/bg-6-1865-2009 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-6-1865-2009 |
container_title |
Biogeosciences |
container_volume |
6 |
container_issue |
9 |
container_start_page |
1865 |
op_container_end_page |
1875 |
_version_ |
1766387840149618688 |