Biogeosciences
Biogeosciences
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Articles | Volume 19, issue 17
Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-4107-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-4107-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 17
Research article
 | 
05 Sep 2022
Research article |  | 05 Sep 2022

Carbon isotopic ratios of modern C3 and C4 vegetation on the Indian peninsula and changes along the plant–soil–river continuum – implications for vegetation reconstructions

Frédérique M. S. A. Kirkels, Hugo J. de Boer, Paulina Concha Hernández, Chris R. T. Martes, Marcel T. J. van der Meer, Sayak Basu, Muhammed O. Usman, and Francien Peterse

Supplement

https://doi.org/10.5194/bg-19-4107-2022-supplement

Data sets

Carbon and nitrogen (isotopic) signatures in C3 and C4 plants, soils, SPM and riverbed sediments in the Godavari River basin (India) in 2015 F. M. S. A. Kirkels, H. de Boer, P. Concha Hernández, C. Martes, M. van der Meer, S. Basu, M. O. Usman, P. Sanyal, and F. Peterse https://doi.org/10.1594/PANGAEA.940189

Branched glycerol monoalkyl glycerol tetraethers (brGMGTs) and geochemical proxies in soils, SPM and riverbed sediments in the Godavari River basin (India) F. M. S. A. Kirkels, H. M. Zwart, M. O. Usman, and F. Peterse https://doi.org/10.1594/PANGAEA.937965

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Short summary
The distinct carbon isotopic values of C3 and C4 plants are widely used to reconstruct past hydroclimate, where more C3 plants reflect wetter and C4 plants drier conditions. Here we examine the impact of regional hydroclimatic conditions on plant isotopic values in the Godavari River basin, India. We find that it is crucial to identify regional plant isotopic values and consider drought stress, which introduces a bias in C3 / C4 plant estimates and associated hydroclimate reconstructions.
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