Articles | Volume 19, issue 17
https://doi.org/10.5194/bg-19-3979-2022
https://doi.org/10.5194/bg-19-3979-2022
Research article
 | 
01 Sep 2022
Research article |  | 01 Sep 2022

From soil to sea: sources and transport of organic carbon traced by tetraether lipids in the monsoonal Godavari River, India

Frédérique M. S. A. Kirkels, Huub M. Zwart, Muhammed O. Usman, Suning Hou, Camilo Ponton, Liviu Giosan, Timothy I. Eglinton, and Francien Peterse

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Cited articles

Ahmad, S. M., Padmakumari, V. M., and Babu, G. A.: Strontium and neodymium isotopic compositions in sediments from Godavari, Krishna and Pennar rivers, Curr. Sci., 97, 1766–1769, 2009. 
Amarasinghe, U., Chaudhuri, A., Collins, A. S., Deb, G., and Patranabis-Deb, S.: Evolving provenance in the Proterozoic Pranhita-Godavari Basin, India, Geosci. Front., 6, 453–463, 2015. 
Aufdenkampe, A. K., Mayorga, E., Raymond, P. A., Melack, J. M., Doney, S. C., Alin, S. R., Aalto, R. E., and Yoo, K.: Riverine coupling of biogeochemical cycles between land, oceans, and atmosphere, Front. Ecol. Environ., 9, 53–60, 2011. 
Babar, M. and Kaplay, R. D.: Godavari River: geomorphology and socio-economic characteristics, in: The Indian Rivers, edited by: Singh, D. S., Springer, Singapore, 319–337, ISBN: 978-981-10-9756-0, https://doi.org/10.1007/978-981-10-2984-4, 2018. 
Babechuk, M. G., Widdowson, M., and Kamber, B. S.: Quantifying chemical weathering intensity and trace element release from two contrasting basalt profiles, Deccan Traps, India, Chem. Geol., 363, 56–75, 2014. 
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Short summary
Soil organic carbon (SOC) that is transferred to the ocean by rivers forms a long-term sink of atmospheric CO2 upon burial on the ocean floor. We here test if certain bacterial membrane lipids can be used to trace SOC through the monsoon-fed Godavari River basin in India. We find that these lipids trace the mobilisation and transport of SOC in the wet season but that these lipids are not transferred far into the sea. This suggests that the burial of SOC on the sea floor is limited here.
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