Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena
The surface ocean absorbs large quantities of the CO 2 emitted to the atmosphere from human activities. As this CO 2 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 photosynt...
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ftdoajarticles:oai:doaj.org/article:cf47135eb705483fa975e6109ac67be9 2023-05-15T15:52:46+02:00 Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena U. Riebesell J. Barcelos e Ramos J. Czerny 2009-09-01T00:00:00Z https://doaj.org/article/cf47135eb705483fa975e6109ac67be9 EN eng Copernicus Publications http://www.biogeosciences.net/6/1865/2009/bg-6-1865-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/cf47135eb705483fa975e6109ac67be9 Biogeosciences, Vol 6, Iss 9, Pp 1865-1875 (2009) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2009 ftdoajarticles 2022-12-31T08:31:47Z The surface ocean absorbs large quantities of the CO 2 emitted to the atmosphere from human activities. As this CO 2 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 [CO 2 ]. 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 p CO 2 . With the mechanism underlying this CO 2 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 CO 2 -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 Directory of Open Access Journals: DOAJ Articles |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 U. Riebesell J. Barcelos e Ramos J. Czerny Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
The surface ocean absorbs large quantities of the CO 2 emitted to the atmosphere from human activities. As this CO 2 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 [CO 2 ]. 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 p CO 2 . With the mechanism underlying this CO 2 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 CO 2 -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 |
U. Riebesell J. Barcelos e Ramos J. Czerny |
author_facet |
U. Riebesell J. Barcelos e Ramos J. Czerny |
author_sort |
U. Riebesell |
title |
Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_short |
Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_full |
Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_fullStr |
Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_full_unstemmed |
Influence of elevated CO 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium Nodularia spumigena |
title_sort |
influence of elevated co 2 concentrations on cell division and nitrogen fixation rates in the bloom-forming cyanobacterium nodularia spumigena |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/cf47135eb705483fa975e6109ac67be9 |
genre |
Carbonic acid Ocean acidification |
genre_facet |
Carbonic acid Ocean acidification |
op_source |
Biogeosciences, Vol 6, Iss 9, Pp 1865-1875 (2009) |
op_relation |
http://www.biogeosciences.net/6/1865/2009/bg-6-1865-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/cf47135eb705483fa975e6109ac67be9 |
_version_ |
1766387869168959488 |