Articles | Volume 15, issue 22
https://doi.org/10.5194/bg-15-6847-2018
https://doi.org/10.5194/bg-15-6847-2018
Research article
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16 Nov 2018
Research article | Highlight paper |  | 16 Nov 2018

Distribution and cycling of terrigenous dissolved organic carbon in peatland-draining rivers and coastal waters of Sarawak, Borneo

Patrick Martin, Nagur Cherukuru, Ashleen S. Y. Tan, Nivedita Sanwlani, Aazani Mujahid, and Moritz Müller

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Cited articles

Alkhatib, M., Jennerjahn, T. C., and Samiaji, J.: Biogeochemistry of the Dumai River estuary, Sumatra, Indonesia, a tropical black-water river, Limnol. Oceanogr., 52, 2410–2417, https://doi.org/10.4319/lo.2007.52.6.2410, 2007. 
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Baum, A., Rixen, T., and Samiaji, J.: Relevance of peat draining rivers in central Sumatra for the riverine input of dissolved organic carbon into the ocean, Estuar. Coast. Shelf S., 73, 563–570, https://doi.org/10.1016/j.ecss.2007.02.012, 2007. 
Beleites, C. and Sergo, V.: hyperSpec: a package to handle hyperspectral data sets in R, available at: http://hyperspec.r-forge.r-project.org, last access: 14 November 2018. 
Benner, R., Louchouarn, P., and Amon, R. M. W.: Terrigenous dissolved organic matter in the Arctic Ocean and its transport to surface and deep waters of the North Atlantic, Global Biogeochem. Cy., 19, GB2025, https://doi.org/10.1029/2004GB002398, 2005. 
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Short summary
The carbon cycle is a key control for the Earth's climate. Every year rivers deliver a lot of organic carbon to coastal seas, but we do not know what happens to this carbon, particularly in the tropics. We show that rivers in Borneo deliver carbon from peat swamps to the sea with at most minimal biological or chemical alteration in estuaries, but sunlight can rapidly oxidise this carbon to CO2. This means that south-east Asian seas are likely hotspots of terrestrial carbon decomposition.
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