Articles | Volume 18, issue 4
https://doi.org/10.5194/bg-18-1417-2021
https://doi.org/10.5194/bg-18-1417-2021
Research article
 | 
24 Feb 2021
Research article |  | 24 Feb 2021

Spatio-temporal variations in lateral and atmospheric carbon fluxes from the Danube Delta

Marie-Sophie Maier, Cristian R. Teodoru, and Bernhard Wehrli

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Revised manuscript not accepted
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Cited articles

Abril, G. and Borges, A. V.: Ideas and perspectives: Carbon leaks from flooded land: do we need to replumb the inland water active pipe?, Biogeosciences, 16, 769–784, https://doi.org/10.5194/bg-16-769-2019, 2019. 
Almeida, R. M., Pacheco, F. S., Barros, N., Rosi, E., and Roland, F.: Extreme floods increase CO2 outgassing from a large Amazonian river, Limnol. Oceanogr., 62, 989–999, https://doi.org/10.1002/lno.10480, 2017. 
Alvarez-Cobelas, M., Angeler, D. G., Sánchez-Carrillo, S., and Almendros, G.: A worldwide view of organic carbon export from catchments, Biogeochemistry, 107, 275–293, https://doi.org/10.1007/s10533-010-9553-z, 2012. 
Amaral, J. H. F., Farjalla, V. F., Melack, J. M., Kasper, D., Scofield, V., Barbosa, P. M., and Forsberg, B. R.: Seasonal and spatial variability of CO2 in aquatic environments of the central lowland Amazon basin, Biogeochemistry, 143, 133–149, https://doi.org/10.1007/s10533-019-00554-9, 2019. 
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Short summary
Based on a 2-year monitoring study, we found that the freshwater system of the Danube Delta, Romania, releases carbon dioxide and methane to the atmosphere. The amount of carbon released depends on the freshwater feature (river branches, channels and lakes), season and hydrologic condition, affecting the exchange with the wetland. Spatial upscaling should therefore consider these factors. Furthermore, the Danube Delta increases the amount of carbon reaching the Black Sea via the Danube River.
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