CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations
Increasing atmospheric carbon dioxide (CO2) through human activities and invasion of anthropogenic CO2 into the surface ocean alters the seawater carbonate chemistry, increasing CO2 and bicarbonate (HCO3−) at the expense of carbonate ion (CO32−) concentrations. This redistribution in the dissolved i...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications (EGU)
2009
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/3889/ https://oceanrep.geomar.de/id/eprint/3889/1/788_Schulz_2009_Co2PerturbationExperimentsSimilaritiesAnd_Artzeit_pubid12360.pdf |
id |
ftoceanrep:oai:oceanrep.geomar.de:3889 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:3889 2024-09-30T14:40:42+00:00 CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations Schulz, Kai Barcelos e Ramos, Joana Zeebe, R. E. Riebesell, Ulf 2009 text https://oceanrep.geomar.de/id/eprint/3889/ https://oceanrep.geomar.de/id/eprint/3889/1/788_Schulz_2009_Co2PerturbationExperimentsSimilaritiesAnd_Artzeit_pubid12360.pdf en eng Copernicus Publications (EGU) https://oceanrep.geomar.de/id/eprint/3889/1/788_Schulz_2009_Co2PerturbationExperimentsSimilaritiesAnd_Artzeit_pubid12360.pdf Schulz, K., Barcelos e Ramos, J., Zeebe, R. E. and Riebesell, U. (2009) CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations. Open Access Biogeosciences (BG), 6 (10). pp. 2145-2153. info:eu-repo/semantics/openAccess Article PeerReviewed 2009 ftoceanrep 2024-09-04T05:04:40Z Increasing atmospheric carbon dioxide (CO2) through human activities and invasion of anthropogenic CO2 into the surface ocean alters the seawater carbonate chemistry, increasing CO2 and bicarbonate (HCO3−) at the expense of carbonate ion (CO32−) 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 CO2 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 CO2 perturbation. Article in Journal/Newspaper Ocean acidification OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Increasing atmospheric carbon dioxide (CO2) through human activities and invasion of anthropogenic CO2 into the surface ocean alters the seawater carbonate chemistry, increasing CO2 and bicarbonate (HCO3−) at the expense of carbonate ion (CO32−) 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 CO2 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 CO2 perturbation. |
format |
Article in Journal/Newspaper |
author |
Schulz, Kai Barcelos e Ramos, Joana Zeebe, R. E. Riebesell, Ulf |
spellingShingle |
Schulz, Kai Barcelos e Ramos, Joana Zeebe, R. E. Riebesell, Ulf CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
author_facet |
Schulz, Kai Barcelos e Ramos, Joana Zeebe, R. E. Riebesell, Ulf |
author_sort |
Schulz, Kai |
title |
CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_short |
CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_full |
CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_fullStr |
CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_full_unstemmed |
CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
title_sort |
co2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations |
publisher |
Copernicus Publications (EGU) |
publishDate |
2009 |
url |
https://oceanrep.geomar.de/id/eprint/3889/ https://oceanrep.geomar.de/id/eprint/3889/1/788_Schulz_2009_Co2PerturbationExperimentsSimilaritiesAnd_Artzeit_pubid12360.pdf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
https://oceanrep.geomar.de/id/eprint/3889/1/788_Schulz_2009_Co2PerturbationExperimentsSimilaritiesAnd_Artzeit_pubid12360.pdf Schulz, K., Barcelos e Ramos, J., Zeebe, R. E. and Riebesell, U. (2009) CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations. Open Access Biogeosciences (BG), 6 (10). pp. 2145-2153. |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1811643192372625408 |