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dc.contributor.authorFreymond, Chantal V.  Concept link
dc.contributor.authorLupker, Maarten  Concept link
dc.contributor.authorPeterse, Francien  Concept link
dc.contributor.authorHaghipour, Negar  Concept link
dc.contributor.authorWacker, Lukas  Concept link
dc.contributor.authorFilip, Florin  Concept link
dc.contributor.authorGiosan, Liviu  Concept link
dc.contributor.authorEglinton, Timothy  Concept link
dc.date.accessioned2019-01-02T21:43:57Z
dc.date.available2019-01-02T21:43:57Z
dc.date.issued2018-06-07
dc.identifier.citationFreymond, C. V., Lupker, M., Peterse, F., Haghipour, N., Wacker, L., Filip, F., et al. (2018). Constraining instantaneous fluxes and integrated compositions of fluvially discharged organic matter. Geochemistry, Geophysics, Geosystems, 19, 2453 2462. https://doi.org/10.1029/2018GC007539en_US
dc.identifier.urihttps://hdl.handle.net/1912/10806
dc.descriptionAuthor Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Freymond, C. V., Lupker, M., Peterse, F., Haghipour, N., Wacker, L., Filip, F., et al. (2018). Constraining instantaneous fluxes and integrated compositions of fluvially discharged organic matter. Geochemistry, Geophysics, Geosystems, 19, 2453 2462. doi: 10.1029/2018GC007539.en_US
dc.description.abstractFluvial export of organic carbon (OC) and burial in ocean sediments comprises an important carbon sink, but fluxes remain poorly constrained, particularly for specific organic components. Here OC and lipid biomarker contents and isotopic characteristics of suspended matter determined in depth profiles across an active channel close to the terminus of the Danube River are used to constrain instantaneous OC and biomarker fluxes and integrated compositions during high to moderate discharges. During high (moderate) discharge, the total Danube exports 8 (7) kg/s OC, 7 (3) g/s higher plant‐derived long‐chain fatty acids (LCFA), 34 (21) g/s short‐chain fatty acids (SCFA), and 0.5 (0.2) g/s soil bacterial membrane lipids (brGDGTs). Integrated stable carbon isotopic compositions were TOC: −28.0 (−27.6)‰, LCFA: −33.5 (−32.8)‰ and Δ14C TOC: −129 (−38)‰, LCFA: −134 (−143)‰, respectively. Such estimates will aid in establishing quantitative links between production, export, and burial of OC from the terrestrial biosphere.en_US
dc.description.sponsorshipThis project was funded by the Swiss National Science Foundation SNF. Grant Number: 200021_140850. F.P. acknowledges funding from NWO‐VENI grant 863.13.016. We thank the sampling crews from both field campaigns (Björn Buggle, James Saenz, Alissa Zuijdgeest, Marilu Tavagna, Stefan Eugen Filip, Silvia Lavinia Filip, Mihai, Clayton Magill, Thomas Blattmann, and Michael Albani), Daniel Montluçon for lab support and Hannah Gies for PCGC work. Figures, tables, and equations can be found in supporting information.en_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2018GC007539
dc.subjectDanube Riveren_US
dc.subjectorganic carbonen_US
dc.subjectbiomarkeren_US
dc.subjectradiocarbonen_US
dc.subjectADCPen_US
dc.titleConstraining instantaneous fluxes and integrated compositions of fluvially discharged organic matteren_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2018GC007539


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