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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)

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Published: 2026-04-02

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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)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Type of studyStudy typeFaucher, Giulia
2 Species, unique identificationSpecies UIDFaucher, Giulia
3 Species, unique identification (URI)Species UID (URI)Faucher, Giulia
4 Species, unique identification (Semantic URI)Species UID (Semantic URI)Faucher, Giulia
5 Alkalinity, totalATµmol/kgFaucher, Giuliamean
6 Carbon, inorganic, dissolvedDICµmol/kgFaucher, Giuliamean
7 pH, total scalepHTFaucher, GiuliaCalculated using CO2SYSmean
8 Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmFaucher, GiuliaCalculated using CO2SYSmean
9 Carbon dioxideCO2µmol/kgFaucher, GiuliaCalculated using CO2SYSmean
10 Bicarbonate ion[HCO3]-µmol/kgFaucher, GiuliaCalculated using CO2SYS
11 Carbonate ion[CO3]2-µmol/kgFaucher, GiuliaCalculated using CO2SYS
12 Aragonite saturation stateOmega ArgFaucher, GiuliaCalculated using CO2SYS
13 Calcite saturation stateOmega CalFaucher, GiuliaCalculated using CO2SYS
14 Growth rateµ1/dayFaucher, Giulia
15 Particulate inorganic carbon/particulate organic carbon ratioPIC/POCFaucher, Giulia
16 Carbon, total, particulate, production per cellTPC prod/cellpg/#/dayFaucher, Giulia
17 Carbon, organic, particulate, production per cellPOC prod/cellpg/#/dayFaucher, Giulia
18 Carbon, inorganic, particulate, production per cellPIC prod/cellpg/#/dayFaucher, Giulia
19 Temperature, waterTemp°CFaucher, Giulia
20 SalinitySalFaucher, Giulia
21 Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22 pH, total scalepHTYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23 Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24 Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25 Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
26 Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
27 Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
28 Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
29 Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
432 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Study type		2 
Species UID		3 
Species UID (URI)		4 
Species UID (Semantic URI)		5 
AT [µmol/kg]
(mean)		6 
DIC [µmol/kg]
(mean)		7 
pHT
(mean, Calculated using CO2SYS)		8 
fCO2water_SST_wet [µatm]
(mean, Calculated using CO2SYS)		9 
CO2 [µmol/kg]
(mean, Calculated using CO2SYS)		10 
[HCO3]- [µmol/kg]
(Calculated using CO2SYS)		11 
[CO3]2- [µmol/kg]
(Calculated using CO2SYS)		12 
Omega Arg
(Calculated using CO2SYS)		13 
Omega Cal
(Calculated using CO2SYS)		14 
µ [1/day]		15 
PIC/POC		16 
TPC prod/cell [pg/#/day]		17 
POC prod/cell [pg/#/day]		18 
PIC prod/cell [pg/#/day]		19 
Temp [°C]		20 
Sal		21 
CSC flag
(Calculated using seacarb afte...)		22 
pHT
(Calculated using seacarb afte...)		23 
CO2 [µmol/kg]
(Calculated using seacarb afte...)		24 
fCO2water_SST_wet [µatm]
(Calculated using seacarb afte...)		25 
pCO2water_SST_wet [µatm]
(Calculated using seacarb afte...)		26 
[HCO3]- [µmol/kg]
(Calculated using seacarb afte...)		27 
[CO3]2- [µmol/kg]
(Calculated using seacarb afte...)		28 
Omega Arg
(Calculated using seacarb afte...)		29 
Omega Cal
(Calculated using seacarb afte...)
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104231921657.97599.4922.5820261161.792.790.980.7118.507.7110.7915.0034.00157.9121.79578.40580.502023.41119.801.842.88
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104243321888.15389.4614.6719991742.684.181.170.3429.217.4921.7215.0034.00158.0914.14375.25376.611994.46179.412.764.31
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104248221958.22327.1712.3219792033.134.881.010.4329.929.0720.8515.0034.00158.1611.94316.84317.991974.76208.313.215.00
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104249921678.30268.4710.1119232343.605.610.960.1111.851.1310.7215.0034.00158.239.83260.89261.841918.42238.753.675.73
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104254121718.35235.888.8919012604.016.250.970.9318.408.879.5315.0034.00158.298.62228.96229.791896.51265.874.096.38
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104259721848.40207.017.8018852914.486.991.010.6920.208.2611.9415.0034.00158.347.57200.96201.691879.06297.374.587.14
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104264321778.46174.856.5918413295.077.901.100.7625.5511.0114.5315.0034.00158.406.39169.63170.251834.75335.865.178.06
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104270221868.52152.725.7518143665.638.791.100.7324.7410.4814.2615.0034.00158.455.58148.02148.561807.05373.375.758.96
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104274221908.55138.385.2117913946.069.450.980.7921.949.7112.2415.0034.00158.495.07134.52135.011784.36400.576.169.61
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104284021988.64110.504.1617334617.1011.070.810.5915.605.789.8115.0034.00158.574.04107.21107.601724.50469.467.2211.27
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104293521928.7386.063.2416515388.2812.910.760.7611.815.106.7215.0034.00158.663.1483.3083.611641.46547.418.4213.14
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104303022008.7970.822.6715906079.3314.560.680.729.834.105.7315.0034.00158.732.5968.6568.901581.10616.329.4814.79
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104312722098.8658.842.22153067610.4016.230.620.7410.904.646.2615.0034.00158.792.1456.9157.121519.88686.9710.5716.49
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104329521849.0037.481.41135383012.7619.910.420.864.402.032.3715.0034.00158.941.3636.1836.311341.22841.4112.9520.19
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104336722468.9939.701.50140384212.9520.200.460.746.422.743.6815.0034.00158.931.4438.3338.461390.60853.9613.1420.50
laboratoryEmiliania huxleyimarinespecies.orgurn:lsid:marinespecies.org:taxname:115104349022139.1027.191.02124496714.8823.210.420.536.122.114.0115.0034.00159.040.9926.2226.321232.17979.8415.0823.52