{"refrec":{"BRefID":440826,"RR":"Opfergelt, S.; Herndon, E.M.; Bryce, C.; Barker, A.J.; Hirst, C. (2026). Iron as a driver of organic carbon fate in permafrost regions. Nature Geoscience 19(7): 750-758. https://dx.doi.org/10.1038/s41561-026-02015-z","BEntID":438660,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". Nature Geoscience 19(7): 750-758. https://dx.doi.org/10.1038/s41561-026-02015-z","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Opfergelt, S.; Herndon, E.M.; Bryce, C.; Barker, A.J.; Hirst, C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Opfergelt, S. et al.","Englishabstract":"Iron (Fe) and its biogeochemical interactions with organic carbon (OC) exert critical controls over carbon storage and water quality across Arctic and sub-Arctic landscapes. Permafrost thaw affects Fe–organic carbon interactions by exposing thawed material and driving shifts in hydrologic regimes. Here we propose a conceptual framework describing how Fe–OC interactions respond to permafrost thaw and the implications for global carbon cycling. The framework builds on current understanding of hydrologically driven processes that are altered by permafrost thaw, including microbial Fe reduction that influences OC decomposition and carbon emissions; Fe cycling through redox transformations and sulfide oxidation; dissolution and reprecipitation of Fe–OC assemblages; and Fe export to river networks. We put forward four testable hypotheses—on topics from Fe supply to its role in soil OC storage and transfer to rivers—to advance understanding of the coupled environmental controls on pore-scale reactions (that is, microscale reactions at mineral–water–microorganism interfaces) that are central to global Fe–OC cycling. Our framework highlights how soil-profile- and landscape-scale processes, such as hydrologic connectivity and redox dynamics, regulate pore-scale Fe–OC reactions.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Iron as a driver of organic carbon fate in permafrost regions","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-07-21 01:39:23.868069","timezone_type":1,"timezone":"+02:00"},"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2026,"MonPub":null,"DateUpdate":"2026-07-20","DateCreate":"2026-07-20","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1038/s41561-026-02015-z"},"refs":null,"anarec":{"AnaID":440826,"PubliDate":2026,"Pagination":"750-758","XtraPublOfAnaID":null,"ISBN":null,"Volume":"19","Issue":"7","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":123796,"SerRR":"Nature Geoscience. 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