Articles | Volume 17, issue 23
Biogeosciences, 17, 6207–6218, 2020
Biogeosciences, 17, 6207–6218, 2020

Research article 09 Dec 2020

Research article | 09 Dec 2020

Seasonality, drivers, and isotopic composition of soil CO2 fluxes from tropical forests of the Congo Basin

Simon Baumgartner et al.

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Cited articles

Alsdorf, D., Beighley, E., Laraque, A., Lee, H., Tshimanga, R., O'Loughlin, F., Mahé, G., Dinga, B., Moukandi, G., and Spencer, R. G. M.: Opportunities for hydrologic research in the Congo Basin, Rev. Geophys., 54, 378–409,, 2016. a
Andrews, J. A., Matamala, R., Westover, K. M., and Schlesinger, W. H.: Temperature effects on the diversity of soil heterotrophs and the δ13C of soil-respired CO2, Soil Biol. Biochem., 32, 699–706,, 2000. a
Arias‐Navarro, C., Díaz‐Pinés, E., Klatt, S., Brandt, P., Rufino, M. C., Butterbach‐Bahl, K., and Verchot, L. V.: Spatial variability of soil N2O and CO2 fluxes in different topographic positions in a tropical montane forest in Kenya, J. Geophys. Res.-Biogeo., 122, 514–527,, 2017. a
Barthel, M., Hammerle, A., Sturm, P., Baur, T., Gentsch, L., and Knohl, A.: The diel imprint of leaf metabolism on the δ13C signal of soil respiration under control and drought conditions, New Phytol., 192, 925–938,, 2011. a
Barton, K.: MuMin: Multi-Model Inference, r package version 1.43.6, available at: (last access: 14 April 2020), 2019. a
Short summary
Soil respiration is an important carbon flux and key process determining the net ecosystem production of terrestrial ecosystems. The Congo Basin lacks studies quantifying carbon fluxes. We measured soil CO2 fluxes from different forest types in the Congo Basin and were able to show that, even though soil CO2 fluxes are similarly high in lowland and montane forests, the drivers were different: soil moisture in montane forests and C availability in the lowland forests.
Final-revised paper