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dc.contributor.authorLalonde, K.
dc.contributor.authorVähätalo, Anssi
dc.contributor.authorGélinas, Y.
dc.date.accessioned2014-09-18T09:19:10Z
dc.date.available2014-09-18T09:19:10Z
dc.date.issued2014
dc.identifier.citationLalonde, K., Vähätalo, A., & Gélinas, Y. (2014). Revisiting the disappearance of terrestrial dissolved organic matter in the ocean: A δ13C study. <i>Biogeosciences</i>, <i>11</i>(13), 3707-3719. <a href="https://doi.org/10.5194/bg-11-3707-2014" target="_blank">https://doi.org/10.5194/bg-11-3707-2014</a>
dc.identifier.otherCONVID_23786213
dc.identifier.otherTUTKAID_62500
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/44281
dc.description.abstractAbstract. Organic carbon (OC) depleted in 13 C is a widely used tracer for terrestrial organic matter (OM) in aquatic sys- tems. Photochemical reactions can, however, change δ 13 C of dissolved organic carbon (DOC) when chromophoric, aromatic-rich terrestrial OC is selectively mineralized. We assessed the robustness of the δ 13 C signature of DOC ( δ 13 C DOC ) as a tracer for terrestrial OM by estimating its change during the photobleaching of chromophoric DOM (CDOM) from 10 large rivers. These rivers cumulatively ac- count for approximately one-third of the world’s freshwater discharge to the global ocean. Photobleaching of CDOM by simulated solar radiation was associated with the photochem- ical mineralization of 16 to 43 % of the DOC and, by prefer- entially removing compounds depleted in 13 C, caused a 1 to 2.9 ‰ enrichment in δ 13 C in the residual DOC. Such solar- radiation-induced photochemical isotopic shift could bias the calculations of terrestrial OM discharge in coastal oceans to- wards the marine end-member. Shifts in terrestrial δ 13 C DOC should be taken into account when constraining the terres- trial end-member in global calculation of terrestrially derived DOM in the world ocean.fi
dc.language.isoeng
dc.publisherCopernicus GmbH; European Geosciences Union
dc.relation.ispartofseriesBiogeosciences
dc.relation.urihttp://www.biogeosciences.net/11/3707/2014/bg-11-3707-2014.html
dc.subject.otherbiogeochemical cycle
dc.subject.otherdissolved organic matter
dc.subject.othermineralization
dc.subject.otherreaction kinetics
dc.titleRevisiting the disappearance of terrestrial dissolved organic matter in the ocean: A δ13C study
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201409132789
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineYmpäristötiedefi
dc.contributor.oppiaineEnvironmental Scienceen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2014-09-13T03:30:03Z
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.format.pagerange3707-3719
dc.relation.issn1726-4170
dc.relation.numberinseries13
dc.relation.volume11
dc.type.versionpublishedVersion
dc.rights.copyright© Authors 2014. This work is distributed under the Creative Commons Attribution 3.0 License.
dc.rights.accesslevelopenAccessfi
dc.subject.ysovalokemia
dc.subject.ysoauringonsäteily
jyx.subject.urihttp://www.yso.fi/onto/yso/p7201
jyx.subject.urihttp://www.yso.fi/onto/yso/p24570
dc.rights.urlhttp://creativecommons.org/licenses/by/3.0/
dc.relation.doi10.5194/bg-11-3707-2014
dc.type.okmA1


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© Authors 2014. This work is distributed
under the Creative Commons Attribution 3.0 License.
Except where otherwise noted, this item's license is described as © Authors 2014. This work is distributed under the Creative Commons Attribution 3.0 License.