https://doi.pangaea.de/10.1594/PANGAEA.995107Bhaumik, AmritaAmritaBhaumikAlfred Wegener Institute - Biological Institute HelgolandSánchez, NicolásNicolásSánchez0009-0004-1717-4274GEOMAR - Helmholtz Centre for Ocean Research KielGoldenberg, Silvan UrsSilvan UrsGoldenberg0000-0003-2296-2190GEOMAR - Helmholtz Centre for Ocean Research KielSpjelkavik, SynneSynneSpjelkavikTechnical University of DenmarkCouret, MaríaMaríaCouret0000-0003-0501-376XUniversidad de Las Palmas de Gran CanariaRiebesell, UlfUlfRiebesell0000-0002-9442-452XGEOMAR - Helmholtz Centre for Ocean Research KielBoersma, MaartenMaartenBoersma0000-0003-1010-026XAlfred Wegener Institute - Biological Institute HelgolandUniversity of BremenJaspers, CorneliaCorneliaJaspers0000-0003-2850-4131Technical University of DenmarkPANGAEA2026AnimaliaBehaviourBiomass/Abundance/Elemental compositionChordataCoast and continental shelfGrowth/MorphologyLaboratory experimentMesocosm or benthocosmNorth AtlanticOcean alkalinity enhancementOikopleura dioicaOther studied parameter or processPelagosSingle speciesTemperateZooplanktonType of studySpecies, unique identificationDay of experimentPhaseTreatmentChange in alkalinity, totalAbundance per volumeAbundanceHouse production rate, per individualClearance rate per individualSalinityTemperature, waterAlkalinity, totalpH, total scaleCarbon, inorganic, dissolvedPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Calcite saturation stateAragonite saturation stateBicarbonate ionCarbon dioxideCarbonate system computation flagFugacity of carbon dioxide (water) at sea surface temperature (wet air)Carbonate ionPotentiometricCalculated using CO2SYSCalculated using seacarb after Nisumaa et al. (2010)Ocean Acidification International Coordination Centre (OA-ICC)Yang, YanYanYang0000-0003-4900-5606Dataset10.1371/journal.pone.034450310.1594/PANGAEA.98306110.5281/ZENODO.1801179010.5194/essd-2-167-201010.5194/essd-16-3771-202410.5194/essd-8-79-2016https://cran.r-project.org/web/packages/seacarb/index.html2860 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalHere, 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.