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| Titel |
Fluvial organic carbon losses from a Bornean blackwater river |
| VerfasserIn |
S. Moore, V. Gauci, C. D. Evans, S. E. Page |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 8, no. 4 ; Nr. 8, no. 4 (2011-04-13), S.901-909 |
| Datensatznummer |
250005691
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| Publikation (Nr.) |
 copernicus.org/bg-8-901-2011.pdf |
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| Zusammenfassung |
| Concentrations of dissolved organic carbon (DOC) and particulate organic
carbon (POC) were analysed from the source to the mouth of the River
Sebangau in Central Kalimantan, Indonesia during the dry and wet seasons in
2008/2009 and an annual total organic carbon (TOC) flux estimated. DOC
concentrations were higher and POC concentrations lower in the wet season
compared to the dry season. As seen in other tropical blackwater rivers, DOC
concentration is consistently around 10 times greater than POC
concentration. We estimate the annual TOC flux discharged to the Java Sea to
be 0.46 Tg year−1 comprising of 93% (0.43 Tg) DOC and 7% (0.03 Tg) POC. This equates to a fluvial TOC loss flux per unit area over the
entire Sebangau catchment of 88 g C m−2 yr−1. When extrapolating
the River Sebangau DOC loss flux (83 g C m−2 yr−1) to the peat
covered area of Indonesia (206 950 km2), we estimate a DOC loss of 17.2 Tg C yr−1 or ~10%
of current estimates of the global annual
riverine DOC discharge into the ocean. |
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