10.1594/PANGAEA.990365Grandjean, JulietteJulietteGrandjeanFlanders Marine InstituteGhent UniversityGonzález‑Aravena, MarceloMarceloGonzález‑AravenaInstituto Antártico Chileno, Punta Arenas, ChileGallardo, PabloPabloGallardoUniversidad de MagallanesDubois, PhilippePhilippeDuboisUniversité Libre de BruxellesCatarino, Ana IsabelAna IsabelCatarino0000-0002-8796-0869Flanders Marine InstituteUniversité Libre de BruxellesPANGAEA2026Acid-base regulationAnimaliaArbacia dufresniiBenthic animalsBenthosCoast and continental shelfContainers and aquaria (20-1000 L or < 1 m**2)EchinodermataGene expression (incl. proteomics)Growth/MorphologyLaboratory experimentOther studied parameter or processSingle speciesSouth AtlanticTemperateType of studySpecies, unique identificationSpecies, unique identification (Semantic URI)Species, unique identification (URI)IdentificationCodeTreatment: pHpH, total scaleDate/time analysis, experimentCarbonate ionCalcite saturation stateAragonite saturation stateCalciumMagnesiumIon activity, calcium, seawaterIon activity, magnesium, seawaterIon activity, carbonate, seawaterMagnesium carbonateLogarithmEquilibrium constant, magnesium calcite dissolutionIon activity productHigh magnesium calcite saturation statePartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Coelomic fluid, pHCalcium ions, coelomic fluidMagnesium, coelomic fluidCoelomic fluid, magnesium/calcium ratioGenderRNA/DNA ratioDiameterMassHeightCalcium carbonate, massNumberSalinityTemperature, waterAlkalinity, totalCarbonate system computation flagCarbon dioxideFugacity of carbon dioxide (water) at sea surface temperature (wet air)Bicarbonate ionCarbon, inorganic, dissolvedExperimentCalculated using seacarb after Nisumaa et al. (2010)Ocean Acidification International Coordination Centre (OA-ICC)Yang, YanYanYang0000-0003-4900-56062008-11-03T00:00:00/2009-09-09T00:00:00Dataset10.1007/s00300-025-03437-y10.14284/71410.5194/essd-2-167-201010.5194/essd-16-3771-202410.5194/essd-8-79-2016https://cran.r-project.org/web/packages/seacarb/index.html10649 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalThe goal of this work was to assess the effects of Ocean Acidification (OA) on Arbacia dufresnii, a sub-Antarctic sea urchin species. Adult specimens were exposed to three pH treatments: 7.4, 7.7, and 8.0 (control), for 21 up to 23 days. We assessed spine regeneration, a proxy of calcification, by cutting spines at the base of the shaft and evaluating the magnesium content, height, and weight of the regenerated part. The coelomic fluid was sampled for pH assessment and magnesium and calcium content analysis. The RNA/DNA ratio, a proxy of metabolic activity, was assessed in the gonads and body walls.
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 Marine Data Archive, VLIZ, Belgium (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 2026-01-30.-70.9333-53.6166