10.1594/PANGAEA.965591O'Brien, Phoebe Alexandra JoyPhoebe Alexandra JoyO'Brien0009-0008-7263-0024University of GothenburgBarrenechea Angeles, InesInesBarrenechea Angeles0000-0002-8051-4110The Arctic University of NorwayCermakova, KristinaKristinaCermakovaID-GENE ecodiagnosticsJarrossay, RenaudRenaudJarrossayUniversité d'AngersPolovodova Asteman, IrinaIrinaPolovodova Asteman0000-0001-7300-5548University of GothenburgPANGAEA2025eDNA metabarcodingForaminiferal assemblagesheavy metalsPollutantsEvent labelDate/Time of eventLatitude of eventLongitude of eventElevation of eventDEPTH, sediment/rockArsenicCadmiumCobaltChromiumCopperMercuryNickelLeadVanadiumZincδ15N/14N ratioδ13C/12C ratioNitrogen, totalCarbon, organic, totalCarbon/Nitrogen ratioGemini CorerInductively coupled plasma - mass spectrometry (ICP-MS), ALS Scandinavia ABIsotope ratio mass spectrometer (IRMS), Sercon2020-11-10T00:00:00/2020-11-11T00:00:00Dataset10.1594/PANGAEA.96558310.1029/2023JG00778190 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalHeavy metals (As, Cd, Co, Cr, Cu, Hg, Ni, Pb, V and Zn) were analysed at ALS Scandinavia AB using a mass spectrometer and the organic chemistry (δ¹⁵N, δ¹³C, TN, TOC and C/N) analysis was conducted at the University of Gothenburg using a SerCon isotope ratio mass spectrometer, both from freeze-dried sediment samples. The environmental variable units are as follows: metals are all (mg/kg), TN (ppm), TOC (mg/L). C/N, δ¹⁵N and δ¹³C have no units as they are isotope ratios.11.212166711.406166759.05159.113666Idefjorden, Sweden