/* DATA DESCRIPTION:
Citation:	Faucher, Giulia; Haunost, Mathias; Paul, Allanah Joy; Tietz, Anne Ulrike Christiane; Riebesell, Ulf (2026): Seawater carbonate chemistry and growth response of Emiliania huxleyi to ocean alkalinity enhancement [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993415 (DOI registration in progress)
Abstract:	In this context, we studied the sensitivity of Emiliania huxleyi, the most widespread coccolithophore species, to ocean alkalinity enhancement in a culture experiment. We monitored the species' growth and calcification response to progressively increasing levels of total alkalinity (TA).
	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 extracted from tables in the related paper (see Related to) 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 2026-04-02.
Keyword(s):	Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Emiliania huxleyi; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Not applicable; Pelagos; Phytoplankton; Primary production/Photosynthesis; Species interaction
Related to:	Faucher, Giulia; Haunost, Mathias; Paul, Allanah Joy; Tietz, Christiane; Riebesell, Ulf (2025): Growth response of Emiliania huxleyi to ocean alkalinity enhancement. Biogeosciences, 22(2), 405-415, https://doi.org/10.5194/bg-22-405-2025
References:	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
Related code / software:	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
Project(s):	Ocean Acidification International Coordination Centre (OA-ICC) (URI: https://www.iaea.org/services/oa-icc/science-and-collaboration/data-access-and-management)
Parameter(s):	Type of study (Study type) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Species, unique identification (Species UID) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Species, unique identification (URI) (Species UID (URI)) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Species, unique identification (Semantic URI) (Species UID (Semantic URI)) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Alkalinity, total [µmol/kg] (AT) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * COMMENT: mean
	Carbon, inorganic, dissolved [µmol/kg] (DIC) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * COMMENT: mean
	pH, total scale (pHT) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS * COMMENT: mean
	Fugacity of carbon dioxide (water) at sea surface temperature (wet air) [µatm] (fCO2water_SST_wet) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS * COMMENT: mean
	Carbon dioxide [µmol/kg] (CO2) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS * COMMENT: mean
	Bicarbonate ion [µmol/kg] ([HCO3]-) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS
	Carbonate ion [µmol/kg] ([CO3]2-) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS
	Aragonite saturation state (Omega Arg) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS
	Calcite saturation state (Omega Cal) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de) * METHOD/DEVICE: Calculated using CO2SYS
	Growth rate [1/day] (µ) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Particulate inorganic carbon/particulate organic carbon ratio (PIC/POC) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Carbon, total, particulate, production per cell [pg/#/day] (TPC prod/cell) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Carbon, organic, particulate, production per cell [pg/#/day] (POC prod/cell) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Carbon, inorganic, particulate, production per cell [pg/#/day] (PIC prod/cell) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Temperature, water [°C] (Temp) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Salinity (Sal) * PI: Faucher, Giulia (https://orcid.org/0000-0001-8930-477X, gfaucher@geomar.de)
	Carbonate system computation flag (CSC flag) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	pH, total scale (pHT) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Carbon dioxide [µmol/kg] (CO2) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Fugacity of carbon dioxide (water) at sea surface temperature (wet air) [µatm] (fCO2water_SST_wet) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) [µatm] (pCO2water_SST_wet) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Bicarbonate ion [µmol/kg] ([HCO3]-) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Carbonate ion [µmol/kg] ([CO3]2-) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Aragonite saturation state (Omega Arg) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
	Calcite saturation state (Omega Cal) * PI: Yang, Yan (https://orcid.org/0000-0003-4900-5606, yangyan@xmu.edu.cn, http://mel.xmu.edu.cn/en/) * METHOD/DEVICE: Calculated using seacarb after Nisumaa et al. (2010) (URI: https://doi.org/10.5194/essd-2-167-2010)
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Status:	Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels)
Size:	432 data points
*/
Study type	Species UID	Species UID (URI)	Species UID (Semantic URI)	AT [µmol/kg] (mean)	DIC [µmol/kg] (mean)	pHT (mean, Calculated using CO2SYS)	fCO2water_SST_wet [µatm] (mean, Calculated using CO2SYS)	CO2 [µmol/kg] (mean, Calculated using CO2SYS)	[HCO3]- [µmol/kg] (Calculated using CO2SYS)	[CO3]2- [µmol/kg] (Calculated using CO2SYS)	Omega Arg (Calculated using CO2SYS)	Omega Cal (Calculated using CO2SYS)	µ [1/day]	PIC/POC	TPC prod/cell [pg/#/day]	POC prod/cell [pg/#/day]	PIC prod/cell [pg/#/day]	Temp [°C]	Sal	CSC flag (Calculated using seacarb afte...)	pHT (Calculated using seacarb afte...)	CO2 [µmol/kg] (Calculated using seacarb afte...)	fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	[HCO3]- [µmol/kg] (Calculated using seacarb afte...)	[CO3]2- [µmol/kg] (Calculated using seacarb afte...)	Omega Arg (Calculated using seacarb afte...)	Omega Cal (Calculated using seacarb afte...)
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2319	2165	7.97	599.49	22.58	2026	116	1.79	2.79	0.98	0.71	18.50	7.71	10.79	15.00	34.00	15	7.91	21.79	578.40	580.50	2023.41	119.80	1.84	2.88
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2433	2188	8.15	389.46	14.67	1999	174	2.68	4.18	1.17	0.34	29.21	7.49	21.72	15.00	34.00	15	8.09	14.14	375.25	376.61	1994.46	179.41	2.76	4.31
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2482	2195	8.22	327.17	12.32	1979	203	3.13	4.88	1.01	0.43	29.92	9.07	20.85	15.00	34.00	15	8.16	11.94	316.84	317.99	1974.76	208.31	3.21	5.00
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2499	2167	8.30	268.47	10.11	1923	234	3.60	5.61	0.96	0.11	11.85	1.13	10.72	15.00	34.00	15	8.23	9.83	260.89	261.84	1918.42	238.75	3.67	5.73
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2541	2171	8.35	235.88	8.89	1901	260	4.01	6.25	0.97	0.93	18.40	8.87	9.53	15.00	34.00	15	8.29	8.62	228.96	229.79	1896.51	265.87	4.09	6.38
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2597	2184	8.40	207.01	7.80	1885	291	4.48	6.99	1.01	0.69	20.20	8.26	11.94	15.00	34.00	15	8.34	7.57	200.96	201.69	1879.06	297.37	4.58	7.14
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2643	2177	8.46	174.85	6.59	1841	329	5.07	7.90	1.10	0.76	25.55	11.01	14.53	15.00	34.00	15	8.40	6.39	169.63	170.25	1834.75	335.86	5.17	8.06
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2702	2186	8.52	152.72	5.75	1814	366	5.63	8.79	1.10	0.73	24.74	10.48	14.26	15.00	34.00	15	8.45	5.58	148.02	148.56	1807.05	373.37	5.75	8.96
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2742	2190	8.55	138.38	5.21	1791	394	6.06	9.45	0.98	0.79	21.94	9.71	12.24	15.00	34.00	15	8.49	5.07	134.52	135.01	1784.36	400.57	6.16	9.61
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2840	2198	8.64	110.50	4.16	1733	461	7.10	11.07	0.81	0.59	15.60	5.78	9.81	15.00	34.00	15	8.57	4.04	107.21	107.60	1724.50	469.46	7.22	11.27
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	2935	2192	8.73	86.06	3.24	1651	538	8.28	12.91	0.76	0.76	11.81	5.10	6.72	15.00	34.00	15	8.66	3.14	83.30	83.61	1641.46	547.41	8.42	13.14
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	3030	2200	8.79	70.82	2.67	1590	607	9.33	14.56	0.68	0.72	9.83	4.10	5.73	15.00	34.00	15	8.73	2.59	68.65	68.90	1581.10	616.32	9.48	14.79
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	3127	2209	8.86	58.84	2.22	1530	676	10.40	16.23	0.62	0.74	10.90	4.64	6.26	15.00	34.00	15	8.79	2.14	56.91	57.12	1519.88	686.97	10.57	16.49
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	3295	2184	9.00	37.48	1.41	1353	830	12.76	19.91	0.42	0.86	4.40	2.03	2.37	15.00	34.00	15	8.94	1.36	36.18	36.31	1341.22	841.41	12.95	20.19
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	3367	2246	8.99	39.70	1.50	1403	842	12.95	20.20	0.46	0.74	6.42	2.74	3.68	15.00	34.00	15	8.93	1.44	38.33	38.46	1390.60	853.96	13.14	20.50
laboratory	Emiliania huxleyi	https://www.marinespecies.org/aphia.php?p=taxdetails&id=115104	urn:lsid:marinespecies.org:taxname:115104	3490	2213	9.10	27.19	1.02	1244	967	14.88	23.21	0.42	0.53	6.12	2.11	4.01	15.00	34.00	15	9.04	0.99	26.22	26.32	1232.17	979.84	15.08	23.52