10.1594/PANGAEA.953826Turner, Lucy MLucy MTurner0000-0002-9052-9498Madeira, DianaDianaMadeira0000-0002-2435-9283Ricevuto, ElenaElenaRicevutoMassa Gallucci, AlexiaAlexiaMassa GallucciSommer, UlfUlfSommerViant, Mark RMark RViant0000-0001-5898-4119Dineshram, RamadossRamadossDineshramGambi, Maria CristinaMaria CristinaGambi0000-0002-0168-776XCalosi, PieroPieroCalosi0000-0003-3378-2603PANGAEA2023Event labelDATE/TIMELATITUDELONGITUDELocationStation labelDEPTH, waterSalinityTemperature, waterpHAlkalinity, totalCarbon, inorganic, dissolvedCarbon dioxide, partial pressureBicarbonate ionCarbonate ionCalcite saturation stateAragonite saturation stateExperimentSpeciesGenus, unique identificationGenus, unique identification (URI)Genus, unique identification (Semantic URI)Method commentExperimentpH meter, Mettler Toledo, Beaumont Leys, UKTotal Alkalinity Titrator, AS-ALK2, Apollo SciTech, Bogart, USAAssociation of European Marine Biological Laboratories Expanded (ASSEMBLE_Plus)2013-06-04T00:00:00/2013-09-16T00:00:00Dataset10.1038/s41598-025-18913-y10.1594/PANGAEA.95390610.1594/PANGAEA.9538323932 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalPlatynereis spp. were collected via snorkelling or scuba from either inside (40°43′53″N, 13°57′47″E) (stations A1-A3) or outside (40°43'33.33"N, 13°57'36.38"E and 40°44′48″N, 13°56′39″E) (stations C1-C3) the carbon dioxide (CO2) vent on the island of Ischia (Italy) and used in a reciprocal transplant experiment between 04/09/2013 and 16/09/2013. The effect of exposure to high or low partial pressures of CO2 (pCO2) conditions on the proteome and metabolome (metabolome, and lipidome) of worms from different pCO2 regimes was investigated to understand the effect of exposure to different pCO2 conditions on the cellular physiological response. Before and during the transplant experiment water samples were taken to characterise the physio-chemical parameters of sea water used when exposing the worms to: (i) low pCO2 conditions (‘control’ stations C1, C2 and C3) and (ii) high pCO2 conditions (‘acidified’ stations A1, A2, A3). Salinity, temperature, pH NBS (Mettler-Toledo pH meter, Beaumont Leys, UK), total alkalinity (TA) (AS-ALK2, Apollo SciTech, Bogart, USA), dissolved inorganic carbon (DIC), carbon dioxide partial pressure (pCO2), bicarbonate and carbonate ion concentration ([HCO3–] and [CO32–), calcite and aragonite saturation state (Ωcal and Ωara) are provided.13.9441713.9635640.7313940.74667Castello AragonesePunta San PietroEuropean Commissionhttps://doi.org/10.13039/501100000780730984Association of European Marine Biological Laboratories Expanded