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dc.contributor.authorFaust, Johan Christoph
dc.contributor.authorStevenson, Mark A.
dc.contributor.authorAbbott, Geoffrey D.
dc.contributor.authorKnies, Jochen
dc.contributor.authorTessin, Allyson
dc.contributor.authorMannion, Isobel
dc.contributor.authorFord, Ailbe
dc.contributor.authorHilton, Robert
dc.contributor.authorPeakall, Jeffrey
dc.contributor.authorMärz, Christian
dc.date.accessioned2020-09-16T08:11:32Z
dc.date.available2020-09-16T08:11:32Z
dc.date.issued2020-08-31
dc.description.abstractOver the last few decades, the Barents Sea experienced substantial warming, an expansion of relatively warm Atlantic water and a reduction in sea ice cover. This environmental change forces the entire Barents Sea ecosystem to adapt and restructure and therefore changes in pelagic–benthic coupling, organic matter sedimentation and long-term carbon sequestration are expected. Here we combine new and existing organic and inorganic geochemical surface sediment data from the western Barents Sea and show a clear link between the modern ecosystem structure, sea ice cover and the organic carbon and CaCO<sub>3</sub> contents in Barents Sea surface sediments. Furthermore, we discuss the sources of total and reactive iron phases and evaluate the spatial distribution of organic carbon bound to reactive iron. Consistent with a recent global estimate we find that on average 21.0 ± 8.3 per cent of the total organic carbon is associated to reactive iron (fOC-Fe<sub>R</sub>) in Barents Sea surface sediments. The spatial distribution of fOC-Fe<sub>R</sub>, however, seems to be unrelated to sea ice cover, Atlantic water inflow or proximity to land. Future Arctic warming might, therefore, neither increase nor decrease the burial rates of iron-associated organic carbon. However, our results also imply that ongoing sea ice reduction and the associated alteration of vertical carbon fluxes might cause accompanied shifts in the Barents Sea surface sedimentary organic carbon content, which might result in overall reduced carbon sequestration in the future. This article is part of the theme issue ‘The changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystem functioning’.en_US
dc.identifier.citationFaust J, Stevenson, Abbott, Knies J, Tessin A, Mannion, Ford, Hilton, Peakall, März C. Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences. 2020;378(2181)en_US
dc.identifier.cristinIDFRIDAID 1826215
dc.identifier.doi10.1098/rsta.2019.0364
dc.identifier.issn1364-503X
dc.identifier.issn1471-2962
dc.identifier.urihttps://hdl.handle.net/10037/19394
dc.language.isoengen_US
dc.publisherThe Royal Societyen_US
dc.relation.journalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Sedimentology: 456en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Sedimentologi: 456en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Oseanografi: 452en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450::Marine geology: 466en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Marin geologi: 466en_US
dc.titleDoes Arctic warming reduce preservation of organic matter in Barents Sea sediments?en_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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