CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations
Increasing atmospheric carbon dioxide (CO 2 ) through human activities and invasion of anthropogenic CO 2 into the surface ocean alters the seawater carbonate chemistry, increasing CO 2 and bicarbonate (HCO 3 − ) at the expense of carbonate ion (CO 3 2− ) concentrations. This redistribution in the d...
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ftdoajarticles:oai:doaj.org/article:f4e2ad1251224f33b9421a65e701154c 2023-05-15T17:50:34+02:00 CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations U. Riebesell R. E. Zeebe J. Barcelos e Ramos K. G. Schulz 2009-10-01T00:00:00Z https://doaj.org/article/f4e2ad1251224f33b9421a65e701154c EN eng Copernicus Publications http://www.biogeosciences.net/6/2145/2009/bg-6-2145-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/f4e2ad1251224f33b9421a65e701154c Biogeosciences, Vol 6, Iss 10, Pp 2145-2153 (2009) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2009 ftdoajarticles 2022-12-31T08:47:23Z Increasing atmospheric carbon dioxide (CO 2 ) through human activities and invasion of anthropogenic CO 2 into the surface ocean alters the seawater carbonate chemistry, increasing CO 2 and bicarbonate (HCO 3 − ) at the expense of carbonate ion (CO 3 2− ) concentrations. This redistribution in the dissolved inorganic carbon (DIC) pool decreases pH and carbonate saturation state (Ω). Several components of the carbonate system are considered potential key variables influencing for instance calcium carbonate precipitation in marine calcifiers such as coccolithophores, foraminifera, corals, mollusks and echinoderms. Unravelling the sensitivities of marine organisms and ecosystems to CO 2 induced ocean acidification (OA) requires well-controlled experimental setups and accurate carbonate system manipulations. Here we describe and analyse the chemical changes involved in the two basic approaches for carbonate chemistry manipulation, i.e. changing DIC at constant total alkalinity (TA) and changing TA at constant DIC. Furthermore, we briefly introduce several methods to experimentally manipulate DIC and TA. Finally, we examine responses obtained with both approaches using published results for the coccolithophore Emiliania huxleyi . We conclude that under most experimental conditions in the context of ocean acidification DIC and TA manipulations yield similar changes in all parameters of the carbonate system, which implies direct comparability of data obtained with the two basic approaches for CO 2 perturbation. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
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 R. E. Zeebe J. Barcelos e Ramos K. G. Schulz CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Increasing atmospheric carbon dioxide (CO 2 ) through human activities and invasion of anthropogenic CO 2 into the surface ocean alters the seawater carbonate chemistry, increasing CO 2 and bicarbonate (HCO 3 − ) at the expense of carbonate ion (CO 3 2− ) concentrations. This redistribution in the dissolved inorganic carbon (DIC) pool decreases pH and carbonate saturation state (Ω). Several components of the carbonate system are considered potential key variables influencing for instance calcium carbonate precipitation in marine calcifiers such as coccolithophores, foraminifera, corals, mollusks and echinoderms. Unravelling the sensitivities of marine organisms and ecosystems to CO 2 induced ocean acidification (OA) requires well-controlled experimental setups and accurate carbonate system manipulations. Here we describe and analyse the chemical changes involved in the two basic approaches for carbonate chemistry manipulation, i.e. changing DIC at constant total alkalinity (TA) and changing TA at constant DIC. Furthermore, we briefly introduce several methods to experimentally manipulate DIC and TA. Finally, we examine responses obtained with both approaches using published results for the coccolithophore Emiliania huxleyi . We conclude that under most experimental conditions in the context of ocean acidification DIC and TA manipulations yield similar changes in all parameters of the carbonate system, which implies direct comparability of data obtained with the two basic approaches for CO 2 perturbation. |
format |
Article in Journal/Newspaper |
author |
U. Riebesell R. E. Zeebe J. Barcelos e Ramos K. G. Schulz |
author_facet |
U. Riebesell R. E. Zeebe J. Barcelos e Ramos K. G. Schulz |
author_sort |
U. Riebesell |
title |
CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_short |
CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_full |
CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_fullStr |
CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_full_unstemmed |
CO 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_sort |
co 2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/f4e2ad1251224f33b9421a65e701154c |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 6, Iss 10, Pp 2145-2153 (2009) |
op_relation |
http://www.biogeosciences.net/6/2145/2009/bg-6-2145-2009.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 https://doaj.org/article/f4e2ad1251224f33b9421a65e701154c |
_version_ |
1766157378489679872 |