Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis
Concerning their sensitivity to ocean acidification, coccolithophores, a group of calcifying single-celled phytoplankton, are one of the best-studied groups of marine organisms. However, in spite of the large number of studies investigating coccolithophore physiological responses to ocean acidificat...
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ftdoajarticles:oai:doaj.org/article:d1058f6171d448ec925fa131f5f4ad0e 2023-05-15T17:49:43+02:00 Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis J. Meyer U. Riebesell 2015-03-01T00:00:00Z https://doi.org/10.5194/bg-12-1671-2015 https://doaj.org/article/d1058f6171d448ec925fa131f5f4ad0e EN eng Copernicus Publications http://www.biogeosciences.net/12/1671/2015/bg-12-1671-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-1671-2015 https://doaj.org/article/d1058f6171d448ec925fa131f5f4ad0e Biogeosciences, Vol 12, Iss 6, Pp 1671-1682 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-1671-2015 2022-12-31T04:39:59Z Concerning their sensitivity to ocean acidification, coccolithophores, a group of calcifying single-celled phytoplankton, are one of the best-studied groups of marine organisms. However, in spite of the large number of studies investigating coccolithophore physiological responses to ocean acidification, uncertainties still remain due to variable and partly contradictory results. In the present study we have used all existing data in a meta-analysis to estimate the effect size of future p CO 2 changes on the rates of calcification and photosynthesis and the ratio of particulate inorganic to organic carbon (PIC / POC) in different coccolithophore species. Our results indicate that ocean acidification has a negative effect on calcification and the cellular PIC / POC ratio in the two most abundant coccolithophore species: Emiliania huxleyi and Gephyrocapsa oceanica . In contrast, the more heavily calcified species Coccolithus braarudii did not show a distinct response when exposed to elevated p CO 2 /reduced pH. Photosynthesis in Gephyrocapsa oceanica was positively affected by high CO 2 , while no effect was observed for the other coccolithophore species. There was no indication that the method of carbonate chemistry manipulation was responsible for the inconsistent results regarding observed responses in calcification and the PIC / POC ratio. The perturbation method, however, appears to affect photosynthesis, as responses varied significantly between total alkalinity (TA) and dissolved inorganic carbon (DIC) manipulations. These results emphasize that coccolithophore species respond differently to ocean acidification, both in terms of calcification and photosynthesis. Where negative effects occur, they become evident at CO 2 levels in the range projected for this century in the case of unabated CO 2 emissions. As the data sets used in this meta-analysis do not account for adaptive responses, ecological fitness and ecosystem interactions, the question remains as to how these physiological responses play out in the ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 12 6 1671 1682 |
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Directory of Open Access Journals: DOAJ Articles |
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language |
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topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 J. Meyer U. Riebesell Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Concerning their sensitivity to ocean acidification, coccolithophores, a group of calcifying single-celled phytoplankton, are one of the best-studied groups of marine organisms. However, in spite of the large number of studies investigating coccolithophore physiological responses to ocean acidification, uncertainties still remain due to variable and partly contradictory results. In the present study we have used all existing data in a meta-analysis to estimate the effect size of future p CO 2 changes on the rates of calcification and photosynthesis and the ratio of particulate inorganic to organic carbon (PIC / POC) in different coccolithophore species. Our results indicate that ocean acidification has a negative effect on calcification and the cellular PIC / POC ratio in the two most abundant coccolithophore species: Emiliania huxleyi and Gephyrocapsa oceanica . In contrast, the more heavily calcified species Coccolithus braarudii did not show a distinct response when exposed to elevated p CO 2 /reduced pH. Photosynthesis in Gephyrocapsa oceanica was positively affected by high CO 2 , while no effect was observed for the other coccolithophore species. There was no indication that the method of carbonate chemistry manipulation was responsible for the inconsistent results regarding observed responses in calcification and the PIC / POC ratio. The perturbation method, however, appears to affect photosynthesis, as responses varied significantly between total alkalinity (TA) and dissolved inorganic carbon (DIC) manipulations. These results emphasize that coccolithophore species respond differently to ocean acidification, both in terms of calcification and photosynthesis. Where negative effects occur, they become evident at CO 2 levels in the range projected for this century in the case of unabated CO 2 emissions. As the data sets used in this meta-analysis do not account for adaptive responses, ecological fitness and ecosystem interactions, the question remains as to how these physiological responses play out in the ... |
format |
Article in Journal/Newspaper |
author |
J. Meyer U. Riebesell |
author_facet |
J. Meyer U. Riebesell |
author_sort |
J. Meyer |
title |
Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
title_short |
Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
title_full |
Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
title_fullStr |
Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
title_full_unstemmed |
Reviews and Syntheses: Responses of coccolithophores to ocean acidification: a meta-analysis |
title_sort |
reviews and syntheses: responses of coccolithophores to ocean acidification: a meta-analysis |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-1671-2015 https://doaj.org/article/d1058f6171d448ec925fa131f5f4ad0e |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 12, Iss 6, Pp 1671-1682 (2015) |
op_relation |
http://www.biogeosciences.net/12/1671/2015/bg-12-1671-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-1671-2015 https://doaj.org/article/d1058f6171d448ec925fa131f5f4ad0e |
op_doi |
https://doi.org/10.5194/bg-12-1671-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
6 |
container_start_page |
1671 |
op_container_end_page |
1682 |
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1766156150925950976 |