Temperature controls organic carbon sequestration in a subarctic lake

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dc.contributor.author Rantala, Marttiina V.
dc.contributor.author Luoto, Tomi P.
dc.contributor.author Nevalainen, Liisa
dc.date.accessioned 2016-11-04T13:43:01Z
dc.date.available 2016-11-04T13:43:01Z
dc.date.issued 2016-10-06
dc.identifier.citation Rantala , M V , Luoto , T P & Nevalainen , L 2016 , ' Temperature controls organic carbon sequestration in a subarctic lake ' , Scientific Reports , vol. 6 , 34780 . https://doi.org/10.1038/srep34780
dc.identifier.other PURE: 70983990
dc.identifier.other PURE UUID: 247ebe49-995d-4047-b6f7-b22f84eb7b17
dc.identifier.other WOS: 000385179700001
dc.identifier.other Scopus: 84990030925
dc.identifier.other ORCID: /0000-0001-6925-3688/work/36750106
dc.identifier.other ORCID: /0000-0002-3231-5926/work/30357881
dc.identifier.other ORCID: /0000-0001-6837-8753/work/38833341
dc.identifier.uri http://hdl.handle.net/10138/168558
dc.description.abstract Widespread ecological reorganizations and increases in organic carbon (OC) in lakes across the Northern Hemisphere have raised concerns about the impact of the ongoing climate warming on aquatic ecosystems and carbon cycling. We employed diverse biogeochemical techniques on a high-resolution sediment record from a subarctic lake in northern Finland (70 degrees N) to examine the direction, magnitude and mechanism of change in aquatic carbon pools prior to and under the anthropogenic warming. Coupled variation in the elemental and isotopic composition of the sediment and a proxy-based summer air temperature reconstruction tracked changes in aquatic production, depicting a decline during a cool climate interval between similar to 1700-1900 C.E. and a subsequent increase over the 20th century. OC accumulation rates displayed similar coeval variation with temperature, mirroring both changes in aquatic production and terrestrial carbon export. Increase in sediment organic content over the 20th century together with high inferred aquatic UV exposure imply that the 20th century increase in OC accumulation is primarily connected to elevated lake production rather than terrestrial inputs. The changes in the supply of autochthonous energy sources were further reflected higher up the benthic food web, as evidenced by biotic stable isotopic fingerprints. en
dc.format.extent 11
dc.language.iso eng
dc.relation.ispartof Scientific Reports
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject UV EXPOSURE
dc.subject ICE-AGE
dc.subject SEDIMENTS
dc.subject SENSITIVITY
dc.subject 1172 Environmental sciences
dc.title Temperature controls organic carbon sequestration in a subarctic lake en
dc.type Article
dc.contributor.organization Department of Geosciences and Geography
dc.contributor.organization Environmental Change Research Unit (ECRU)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1038/srep34780
dc.relation.issn 2045-2322
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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