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Bhaumik, Amrita; Sánchez, Nicolás; Goldenberg, Silvan Urs; Spjelkavik, Synne; Couret, María; Riebesell, Ulf; Boersma, Maarten; Jaspers, Cornelia (2026): Seawater carbonate chemistry and ocean alkalinity enhancement on Oikopleura dioica abundances and their house production capacity [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995107 (DOI registration in progress)

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Published: 2026-05-19

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Abstract:
Here, we assessed the response of a key gelatinous zooplankton species to ocean alkalinity enhancement in a 53-day mesocosm experiment in a temperate Norwegian fjord. Oikopleura dioica is a globally distributed zooplankton member, known for its high secondary production capacity and key role in vertical carbon flux. O. dioica continuously produces mucous feeding structures ('houses'), which efficiently retain submicron particles. Once discarded, these houses can sink rapidly and contribute to vertical carbon exports. To test the impacts of OAE on O. dioica abundances and their house production capacity, we exposed natural plankton communities to non-CO2-equilibrated OAE scenarios spanning a ΔTA range from 0–600 μmol/kg, using silicate-based (olivine) and calcium-based (slaked lime) minerals. Population dynamics of O. dioica were monitored alongside the plankton community, and targeted bottle incubations were used to quantify house production and feeding rates.
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 2026-05-18.
Keyword(s):
Animalia; Behaviour; Biomass/Abundance/Elemental composition; Chordata; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Mesocosm or benthocosm; North Atlantic; Ocean alkalinity enhancement; Oikopleura dioica; Other studied parameter or process; Pelagos; Single species; Temperate; Zooplankton
Related to:
Bhaumik, Amrita; Sánchez, Nicolás; Goldenberg, Silvan Urs; Spjelkavik, Synne; Couret, María; Riebesell, Ulf; Boersma, Maarten; Jaspers, Cornelia (2026): Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement. PLoS ONE, 21(3), e0344503, https://doi.org/10.1371/journal.pone.0344503
Schneider, Julieta; Riebesell, Ulf; Moras, Charly; Marín-Samper, Laura; Kittu, Leila; Ortiz Cortes, Joaquin; Schulz, Kai Georg (2025): KOSMOS 2022 Bergen mesocosm study on ocean alkalinity enhancement: carbonate chemistry , CO2 flux data and calcification estimates [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.983061 (The original carbonate chemistry data as well as temperature and salinity data were downloaded from this dataset.)
Source:
Bhaumik, Amrita; Sánchez, Nicolás; Goldenberg, Silvan Urs; Spjelkavik, Synne; Couret, Maria; Riebesell, Ulf; Boersma, Maarten; Jaspers, Cornelia (2025): Data underlying figures for: Resilience of the gelatinous zooplankton species Oikopleura dioica to ocean alkalinity enhancement (PONE-D-25-40260) [dataset]. Zenodo, https://doi.org/10.5281/ZENODO.18011790
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
1Type of studyStudy typeBhaumik, Amrita
2Species, unique identificationSpecies UIDBhaumik, Amrita
3Species, unique identificationSpecies UIDBhaumik, Amrita
4Species, unique identificationSpecies UIDBhaumik, Amrita
5Day of experimentDOEdayBhaumik, Amrita
6PhasePhaseBhaumik, Amrita
7TreatmentTreatBhaumik, AmritaMineral_type
8Change in alkalinity, totalAT chnµmol/kgBhaumik, Amrita
9Abundance per volumeAbund v#/m3Bhaumik, Amrita
10AbundanceAbund%Bhaumik, Amrita
11Abundance per volumeAbund v#/m3Bhaumik, Amritasmall size
12Abundance per volumeAbund v#/m3Bhaumik, Amritaintermediate size
13Abundance per volumeAbund v#/m3Bhaumik, Amritalarge size
14House production rate, per individualHouse prod/ind#/#/dayBhaumik, Amrita
15Clearance rate per individualCRml/#/hBhaumik, Amrita
16SalinitySalBhaumik, Amrita
17Temperature, waterTemp°CBhaumik, Amrita
18Alkalinity, totalATµmol/kgBhaumik, Amrita
19pH, total scalepHTBhaumik, AmritaPotentiometricT_25
20pH, total scalepHTBhaumik, AmritaPotentiometricT_25 correct
21pH, total scalepHTBhaumik, AmritaCalculated using CO2SYST_insitu
22Carbon, inorganic, dissolvedDICµmol/kgBhaumik, AmritaCalculated using CO2SYS
23Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmBhaumik, AmritaCalculated using CO2SYS
24Calcite saturation stateOmega CalBhaumik, AmritaCalculated using CO2SYS
25Aragonite saturation stateOmega ArgBhaumik, AmritaCalculated using CO2SYS
26Bicarbonate ion[HCO3]-µmol/kgBhaumik, AmritaCalculated using CO2SYS
27Carbon dioxideCO2µmol/kgBhaumik, AmritaCalculated using CO2SYS
28Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
29Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
30Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
31Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
32Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
33Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
34Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
35Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
36Calcite 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:
2860 data points

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