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dc.contributor.authorKjellman, Sofia E.
dc.contributor.authorAxelsson, Pia E.
dc.contributor.authorEtzelmüller, Bernd
dc.contributor.authorWestermann, Sebastian
dc.contributor.authorSannel, A. Britta K.
dc.date.accessioned2019-01-15T12:35:29Z
dc.date.available2019-01-15T12:35:29Z
dc.date.issued2018-12-01
dc.description.abstractSubarctic permafrost peatlands are important soil organic carbon pools, and improved knowledge about peat properties and peatland sensitivity to past climate change is essential when predicting future response to a warmer climate and associated feedback mechanisms. In this study, Holocene peatland development and permafrost dynamics of four subarctic peat plateaus in Finnmark, northern Norway have been investigated through detailed analyses of plant macrofossils and geochemical properties. Peatland inception occurred around 9800 cal. yr BP and 9200 cal. yr BP at the two continental sites Suossjavri and Iskoras. Younger basal peat ages were found at the two coastal locations Lakselv and Karlebotn, at least partly caused by the time lag between deglaciation and emergence of land by isostatic uplift. Here, peatland development started around 6150 cal. yr BP and 5150 cal. yr BP, respectively. All four peatlands developed as wet fens throughout most of the Holocene. Permafrost aggradation, causing frost heave and a shift in the vegetation assemblage from wet fen to dry bog species, probably did not occur until during the last millennium, ca. 950 cal. yr BP in Karlebotn and ca. 800 cal. yr BP in Iskoras, and before ca. 150 cal. yr BP in Lakselv and ca. 100 cal. yr BP in Suossjavri. In Karlebotn, there are indications of a possible earlier permafrost phase around 2200 cal. yr BP due to climatic cooling at the late Subboreal to early Subatlantic transition. The mean long-term Holocene carbon accumulation rate at all four sites was 12.3 +/- 4.1 gC m-2 yr-1 (+/- SD) and the mean soil organic carbon storage was 97 +/- 46 kgC m-2.en_US
dc.description.sponsorshipUniversity of Oslo Bolin Centre for Climate Research The Swedish Research Council Formasen_US
dc.descriptionAccepted manuscript version. Published version available at <a href=https://doi.org/10.1177/0959683618798126> https://doi.org/10.1177/0959683618798126</a>.en_US
dc.identifier.citationKjellman, S.E., Axelsson, P.E., Etzelmüller, B., Westermann, S. & Sannel, B.K. (2018). Holocene development of subarctic permafrost peatlands in Finnmark, northern Norway. <i>The Holocene</i>, 28(12), 1855-1869. https://doi.org/10.1177/0959683618798126en_US
dc.identifier.cristinIDFRIDAID 1644824
dc.identifier.doi10.1177/0959683618798126
dc.identifier.issn0959-6836
dc.identifier.issn1477-0911
dc.identifier.urihttps://hdl.handle.net/10037/14449
dc.language.isoengen_US
dc.publisherSAGE Publicationsen_US
dc.relation.journalThe Holocene
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/KLIMAFORSK/244903/Norway/Constraining uncertainties in the permafrost-carbon feedback//en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/KLIMAFORSK/255331/Norway/Permafrost landscapes in transformation - from local-scale processes to the global model NorESM//en_US
dc.relation.urihttps://journals.sagepub.com/doi/10.1177/0959683618798126
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og naturvitenskap: 400::Geofag: 450en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Geosciences: 450en_US
dc.subjectcarbon accumulationen_US
dc.subjectHoloceneen_US
dc.subjectpeatland developmenten_US
dc.subjectpeat plateauen_US
dc.subjectpermafrost dynamicsen_US
dc.subjectplant macrofossilsen_US
dc.subjectsubarctic Norwayen_US
dc.titleHolocene development of subarctic permafrost peatlands in Finnmark, northern Norwayen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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