Articles | Volume 20, issue 12
https://doi.org/10.5194/bg-20-2405-2023
https://doi.org/10.5194/bg-20-2405-2023
Research article
 | 
23 Jun 2023
Research article |  | 23 Jun 2023

The hidden role of dissolved organic carbon in the biogeochemical cycle of carbon in modern redox-stratified lakes

Robin Havas, Christophe Thomazo, Miguel Iniesto, Didier Jézéquel, David Moreira, Rosaluz Tavera, Jeanne Caumartin, Elodie Muller, Purificación López-García, and Karim Benzerara

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Cited articles

Alcántara-Hernández, R. J., Macek, M., Torres-Huesca, J., Arellano-Posadas, J., and Valdespino-Castillo, P. M.: Bacterioplankton, in: Lake Alchichica Limnology: The Uniqueness of a Tropical Maar Lake, edited by: Alcocer, J., Springer International Publishing, Cham, 183–196, https://doi.org/10.1007/978-3-030-79096-7_11, 2022. 
Alcocer, J., Guzmán-Arias, A., Oseguera, L. A., and Escobar, E.: Dinámica del carbono orgánico disuelto y particulado asociados al florecimiento de Nodularia spumigena en un lago tropical oligotrófico, in: n Estado Actual del Conocimiento del Ciclo del Carbono y sus Interacciones en México: Sintesis a 2014, edited by: Paz, F. and Wong, J., Programma Mexicano del Carbono, 404–410, 2014a. 
Alcocer, J., Ruiz-Fernández, A. C., Escobar, E., Pérez-Bernal, L. H., Oseguera, L. A., and Ardiles-Gloria, V.: Deposition, burial and sequestration of carbon in an oligotrophic, tropical lake, J. Limnol., 73, 223–235, https://doi.org/10.4081/jlimnol.2014.783, 2014b. 
Alcocer, J., Merino-Ibarra, M., Ramírez-Zierold, J. A., Oseguera, L. A., Cortés-Guzmán, D., Castillo-Sandoval, F. S., Guzmán-Arias, A. P., and Pérez-Ramírez, M. G.: Physicochemical Characteristics, in: Lake Alchichica Limnology: The Uniqueness of a Tropical Maar Lake, 101–142, Cham, Springer International Publishing, https://doi.org/10.1007/978-3-030-79096-7_7, 2022. 
Anderson, N. J. and Stedmon, C. A.: The effect of evapoconcentration on dissolved organic carbon concentration and quality in lakes of SW Greenland, Freshwater Biol., 52, 280–289, https://doi.org/10.1111/j.1365-2427.2006.01688.x, 2007. 
Short summary
Dissolved organic carbon (DOC) is a reservoir of prime importance in the C cycle of both continental and marine systems. It has also been suggested to influence the past Earth climate but is still poorly characterized in ancient-Earth-like environments. In this paper we show how DOC analyses from modern redox-stratified lakes can evidence specific metabolic reactions and environmental factors and how these can help us to interpret the C cycle of specific periods in the Earth's past.
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