PANGAEA_993974 Seawater carbonate chemistry and physiological data for coccolithophores under OAE treatment Gill, Sophie; Ge, Jiayou; Zhang, Qiong; Henderson, Gideon M; Rickaby, Rosalind E M Seawater carbonate chemistry and physiological data for coccolithophores under OAE treatment 2026-05-08 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993974 Investigator Qiong Zhang Investigator Yan Yang yangyan@xmu.edu.cn Earth Science Type of study Species, unique identification Species, unique identification (URI) Species, unique identification (Semantic URI) Treatment Pathway Alkalinity, total Carbon, inorganic, dissolved pH, NBS scale Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Carbon dioxide Bicarbonate ion Carbonate ion Calcite saturation state Growth rate Calcification rate of calcium carbonate per cell Temperature, water Salinity Coccosphere size, relative Carbonate system computation flag pH, total scale Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Aragonite saturation state geoscientificInformation Bottles or small containers/Aquaria (<20 L) Calcification/Dissolution Chromista Coccolithus braarudii Gephyrocapsa huxleyi Growth/Morphology Haptophyta Laboratory experiment Laboratory strains Not applicable Ocean alkalinity enhancement Pelagos Phytoplankton Single species Calculated using seacarb after Nisumaa et al. (2010) Complete OA-ICC Ocean Acidification International Coordination Centre unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 6422 data points text/tab-separated-values Gill, Sophie; Ge, Jiayou; Zhang, Qiong; Henderson, Gideon M; Rickaby, Rosalind E M (2025): The Physiological Response of Contrasting Coccolithophore Species to Ocean Alkalinity Enhancement. Journal of Geophysical Research: Biogeosciences, 130(11), e2025JG009103, https://doi.org/10.1029/2025JG009103 Gill, Sophie; Ge, Jiayou; Zhang, Qiong; Henderson, Gideon M; Rickaby, Rosalind E M (2025): Physiological data for coccolithophores under OAE treatment [dataset]. Zenodo, https://doi.org/10.5281/ZENODO.17479763 Nisumaa, Anne-Marin; Pesant, Stephane; Bellerby, Richard G J; Delille, Bruno; Middelburg, Jack J; Orr, James C; Riebesell, Ulf; Tyrrell, Toby; Wolf-Gladrow, Dieter A; Gattuso, Jean-Pierre (2010): EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification. Earth System Science Data, 2(2), 167-175, https://doi.org/10.5194/essd-2-167-2010 Yang, Yan; Brockmann, Patrick; Galdino, Carolina; Schindler, Uwe; Gazeau, Frédéric (2024): An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal. Earth System Science Data, 16(8), 3771-3780, https://doi.org/10.5194/essd-16-3771-2024 Yang, Yan; Hansson, L; Gattuso, Jean-Pierre (2016): Data compilation on the biological response to ocean acidification: an update. Earth System Science Data, 8(1), 79-87, https://doi.org/10.5194/essd-8-79-2016 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2024): seacarb: seawater carbonate chemistry with R. R package version 3.3.3. https://cran.r-project.org/web/packages/seacarb/index.html

Here we examined the growth, calcification response, and morphology of these two key "endmember" species of coccolithophore (Gephyrocapsa huxleyi and Coccolithus braarudii) to ocean alkalinity enhancement using in vitro laboratory culture experiments. We also compared how the addition of the monovalent cation Na+ and divalent cation Ca2+ to raise total alkalinity affected growth and calcification responses. This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were downloaded from Zenodo (see Source) by the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2026-04-30. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993974"!

http://mel.xmu.edu.cn/en/ https://cran.r-project.org/web/packages/seacarb/index.html seacarb: seawater carbonate chemistry with R. R package version 3.3.3 https://doi.org/10.1029/2025JG009103 The Physiological Response of Contrasting Coccolithophore Species to Ocean Alkalinity Enhancement https://doi.org/10.5194/essd-16-3771-2024 An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal https://doi.org/10.5194/essd-2-167-2010 Calculated using seacarb after Nisumaa et al. (2010) https://doi.org/10.5194/essd-2-167-2010 EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification https://doi.org/10.5194/essd-8-79-2016 Data compilation on the biological response to ocean acidification: an update https://doi.org/10.5281/ZENODO.17479763 Physiological data for coccolithophores under OAE treatment https://www.iaea.org/services/oa-icc/science-and-collaboration/data-access-and-management OA-ICC DIF 9.4 2026-05-08 2026-05-19