Articles | Volume 18, issue 19
https://doi.org/10.5194/bg-18-5363-2021
https://doi.org/10.5194/bg-18-5363-2021
Research article
 | 
04 Oct 2021
Research article |  | 04 Oct 2021

Validation of a coupled δ2Hn-alkaneδ18Osugar paleohygrometer approach based on a climate chamber experiment

Johannes Hepp, Christoph Mayr, Kazimierz Rozanski, Imke Kathrin Schäfer, Mario Tuthorn, Bruno Glaser, Dieter Juchelka, Willibald Stichler, Roland Zech, and Michael Zech

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Cited articles

Ali, H. A. M., Mayes, R. W., Hector, B. L., Verma, A. K., and Ørskov, E. R.: The possible use of n-alkanes, long-chain fatty alcohols and long-chain fatty acids as markers in studies of the botanical composition of the diet of free-ranging herbivores, J. Agr. Sci., 143, 85–95, https://doi.org/10.1017/S0021859605004958, 2005. 
Allison, G. B., Gat, J. R., and Leaney, F. W. J.: The relationship between deuterium and oxygen-18 delta values in leaf water, Chem. Geol., 58, 145–156, 1985. 
Altermatt, H. A. and Neish, A. C.: The biosynthesis of cell wall carbohydrates: III. Further studies on formation of cellulose and xylan from labeled monosaccharides in wheat plants, Can. J. Biochem. Phys., 34, 405–413, https://doi.org/10.1139/o56-042, 1956. 
Amelung, W., Cheshire, M. V., and Guggenberger, G.: Determination of neutral and acidic sugars in soil by capillary gas-liquid chromatography after trifluoroacetic acid hydrolysis, Soil Biol. Biochem., 28, 1631–1639, 1996. 
Barbour, M. M. and Farquhar, G. D.: Relative humidity-and ABA-induced variation in carbon and oxygen isotope ratios of cotton leaves, Plant Cell Environ., 23, 473–485, 2000. 
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Deriving more quantitative climate information like relative air humidity is one of the key challenges in paleostudies. Often only qualitative reconstructions can be done when single-biomarker-isotope data are derived from a climate archive. However, the coupling of hemicellulose-derived sugar with leaf-wax-derived n-alkane isotope results has the potential to overcome this limitation and allow a quantitative relative air humidity reconstruction.
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