Articles | Volume 14, issue 9
https://doi.org/10.5194/bg-14-2267-2017
https://doi.org/10.5194/bg-14-2267-2017
Research article
 | 
05 May 2017
Research article |  | 05 May 2017

The riverine source of CH4 and N2O from the Republic of Congo, western Congo Basin

Robert C. Upstill-Goddard, Matthew E. Salter, Paul J. Mann, Jonathan Barnes, John Poulsen, Bienvenu Dinga, Gregory J. Fiske, and Robert M. Holmes

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Cited articles

Abril, G. and Iversen, N.: Methane dynamics in a shallow, non-tidal, estuary (Randers Fjord, Denmark), Mar. Ecol. Prog. Ser., 230, 171–181, 2002.
Arango, C. P., Tank, J. L., Johnson, L. T., and Hamilton, S. K.: Assimilatory uptake rather than nitrification and denitrification determines nitrogen removal patterns in streams of varying land use, Limnol. Oceanogr., 53, 2558–2572, 2008.
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.
Balagizi, C. M., Darchambeau, F., Bouillon, S., Yalire, M. M., Lambert, T., and Borges, A. V.: River geochemistry, chemical weathering and atmospheric CO2 consumption rates in the Virunga volcanic province (East Africa), Geochem. Geophy. Geosy., 16, https://doi.org/10.1002/2015GC005999, 2015.
Barnes, J. and Upstill-Goddard, R. C.: N2O seasonal distributions and air-sea exchange in UK estuaries: Implications for the tropospheric N2O source from European coastal waters, J. Geophys. Res., 116, G01006, https://doi.org/10.1029/2009JG001156, 2011.
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Short summary
We measured concentrations of the greenhouse gases methane and nitrous oxide in rivers from the western Congo Basin (Republic of Congo). All rivers studied were strong sources of methane to air but they ranged from minor sources to minor sinks for nitrous oxide. Our estimated emissions to air agreed with existing estimates for sub-Saharan African rivers, supportive of the growing consensus that African river systems are a major contributor to the global freshwater source of greenhouse gases.
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