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Changes in Soil Dissolved Organic Carbon Affect Reconstructed History and Projected Future Trends in Surface Water Acidification
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SYSNO ASEP 0435290 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Changes in Soil Dissolved Organic Carbon Affect Reconstructed History and Projected Future Trends in Surface Water Acidification Author(s) Hruška, Jakub (UEK-B) RID, SAI, ORCID
Krám, Pavel (UEK-B) RID, SAI, ORCID
Moldan, Filip (UEK-B) RID
Oulehle, Filip (UEK-B) RID, ORCID, SAI
Evans, C. D. (GB)
Wright, R. F. (NO)
Cosby, B. J. (US)
Kopáček, Jiří (BC-A) RID, ORCIDSource Title Water, Air, and Soil Pollution. - : Springer - ISSN 0049-6979
Roč. 225, č. 7 (2014), s. 2015Number of pages 13 s. Language eng - English Country NL - Netherlands Keywords acidification ; surface waters ; soils ; dissolved organic carbon ; magic model ; preindustrial water chemistry Subject RIV EH - Ecology, Behaviour Subject RIV - cooperation Biology Centre (since 2006) - Hydrology ; Limnology R&D Projects ED1.1.00/02.0073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support RVO:67179843 - RVO:67179843 ; BC-A - RVO:60077344 UT WOS 000340527100012 DOI 10.1007/s11270-014-2015-9 Annotation Preindustrial (1850s) and future (2060) streamwater chemistry of an anthropogenically acidified small catchment was estimated using the MAGIC model for three different scenarios for dissolved organic carbon (DOC) concentrations and sources. The highest modeled pH = 5.7 for 1850s as well as for 2060 (pH = 4.4) was simulated given the assumption that streamwater DOC concentration was constant at the 1993 level. A scenario accounting for an increase of DOC as an inverse function of ionic strength (IS) of soilwater and streamwater resulted in much lower preindustrial (pH = 4.9) and future recovery to (pH = 4.1) if the stream riparian zone was assumed to be the only DOC source. If upland soilwater (where significant DOC increase was observed at −5 and −15 cm) was also included, DOC was partly neutralized within the soil and higher preindustrial pH = 5.3 and future pH = 4.2 were estimated. The observed DOC stream flux was 2–4 times higher than the potential carbon production of the riparian zone, implying that this is unlikely to be the sole DOC source. Modeling based on the assumption that stream DOC changes are solely attributable to changes in the riparian zone appears likely to underestimate preindustrial pH. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2015
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