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dc.contributor.authorThaysen, Eike Marie
dc.contributor.authorJessen, Søren
dc.contributor.authorAmbus, Per
dc.contributor.authorBeier, Claus
dc.contributor.authorPostma, Dieke
dc.contributor.authorJakobsen, Iver
dc.identifier.citationThaysen, E.M. et al., 2014. Technical Note: Mesocosm approach to quantify dissolved inorganic carbon percolation fluxes. Biogeosciences 11(4)nb_NO
dc.description.abstractDissolved inorganic carbon (DIC) fluxes across the vadose zone are influenced by a complex interplay of biological, chemical and physical factors. A novel soil mesocosm system was evaluated as a tool for providing information on the mechanisms behind DIC percolation to the groundwater from unplanted soil. Carbon dioxide partial pressure (pCO2), alkalinity, soil moisture and temperature were measured with depth and time, and DIC in the percolate was quantified using a sodium hydroxide trap. Results showed good reproducibility between two replicate mesocosms. The pCO2 varied between 0.2 and 1.1%, and the alkalinity was 0.1–0.6 meq L−1. The measured cumulative effluent DIC flux over the 78-day experimental period was 185–196 mg L−1 m−2 and in the same range as estimates derived from pCO2 and alkalinity in samples extracted from the side of the mesocosm column and the drainage flux. Our results indicate that the mesocosm system is a promising tool for studying DIC percolation fluxes and other biogeochemical transport processes in unsaturated environments.nb_NO
dc.publisherEuropean Geosciences Unionnb_NO
dc.rightsNavngivelse-Ikkekommersiell-DelPåSammeVilkår 3.0 Norge*
dc.titleTechnical Note: Mesocosm approach to quantify dissolved inorganic carbon percolation fluxesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.rights.holder© Author(s) 2014.
dc.rights.licenseAttribution 3.0 Unported (CC BY 3.0)

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Navngivelse-Ikkekommersiell-DelPåSammeVilkår 3.0 Norge
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