Articles | Volume 18, issue 8
https://doi.org/10.5194/cp-18-1849-2022
https://doi.org/10.5194/cp-18-1849-2022
Research article
 | 
15 Aug 2022
Research article |  | 15 Aug 2022

Climate signals in stable carbon and hydrogen isotopes of lignin methoxy groups from southern German beech trees

Anna Wieland, Markus Greule, Philipp Roemer, Jan Esper, and Frank Keppler

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Cited articles

Anhäuser, T., Greule, M., Polag, D., Bowen, G. J., and Keppler, F.: Mean annual temperatures of mid-latitude regions derived from δ2H values of wood lignin methoxyl groups and its implications for paleoclimate studies, Sci. Total Environ., 574, 1276–1282, https://doi.org/10.1016/j.scitotenv.2016.07.189, 2017a. 
Anhäuser, T., Greule, M., and Keppler, F.: Stable hydrogen isotope values of lignin methoxyl groups of four tree species across Germany and their implication for temperature reconstruction, Sci. Total Environ., 579, 263–271, https://doi.org/10.1016/j.scitotenv.2016.11.109, 2017b. 
Anhäuser, T., Sehls, B., Thomas, W., Hartl, C., Greule, M., Scholz, D., Esper, J., and Keppler, F.: Tree-ring δ2H values from lignin methoxyl groups indicate sensitivity to European-scale temperature changes, Palaeogeogr. Palaeocl., 546, 109665, https://doi.org/10.1016/j.palaeo.2020.109665, 2020. 
Badeck, F. W., Tcherkez, G., Nogués, S., Piel, C., and Ghashghaie, J.: Post-photosynthetic fractionation of stable carbon isotopes between plant organs – A widespread phenomenon, Rapid Commun. Mass Sp., 19, 1381–1391, https://doi.org/10.1002/rcm.1912, 2005. 
Bowen, G. J., Cai, Z., Fiorella, R. P., and Putman, A. L.: Isotopes in the water cycle: Regional- to global-scale patterns and applications, Annu. Rev. Earth Pl. Sc., 47, 453–479, https://doi.org/10.1146/annurev-earth-053018-060220, 2019. 
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Short summary
We examined annually resolved stable carbon and hydrogen isotope ratios of wood lignin methoxy groups of beech trees growing in temperate, low elevation environments. Here, carbon isotope ratios reveal highest correlations with regional summer temperatures while hydrogen isotope ratios correlate more strongly with large-scale temperature changes. By combining the dual isotope ratios of wood lignin methoxy groups, a proxy for regional- to subcontinental-scale temperature patterns can be applied.
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