Articles | Volume 16, issue 4
Biogeosciences, 16, 863–879, 2019
https://doi.org/10.5194/bg-16-863-2019
Biogeosciences, 16, 863–879, 2019
https://doi.org/10.5194/bg-16-863-2019

Research article 20 Feb 2019

Research article | 20 Feb 2019

Remineralization rate of terrestrial DOC as inferred from CO2 supersaturated coastal waters

Filippa Fransner et al.

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Cited articles

Aarnos, H., Ylöstalo, P., and Vähätalo, A. V.: Seasonal phototransformation of dissolved organic matter to ammonium, dissolved inorganic carbon, and labile substrates supporting bacterial biomass across the Baltic Sea, J. Geophys. Res.-Biogeo., 117, https://doi.org/10.1029/2010JG001633, 2012. a, b
Alling, V., Humborg, C., Mörth, C.-M., Rahm, L., and Pollehne, F.: Tracing terrestrial organic matter by δ34 and δ13C signatures in a subarctic estuary, Limnol. Oceanogr., 53, 2594–2602, https://doi.org/10.4319/lo.2008.53.6.2594, 2008. a, b
Anderson, L. G., Jutterström, S., Hjalmarsson, S., Wåhlström, I., and Semiletov, I. P.: Out-gassing of CO2 from Siberian Shelf seas by terrestrial organic matter decomposition, Geophys. Res. Lett., 36, L20601, https://doi.org/10.1029/2009GL040046, 2009. a
Arst, H., Erm, A., Herlevi, A., Kutser, T., Leppäranta, M., Reinart, A., and Virta, J.: Optical properties of boreal lake waters in Finland and Estonia, Boreal Environ. Res., 13, 133–158, 2008. a, b
Ask, J., Karlsson, J., Persson, L., Ask, P., Byström, P., and Jansson, M.: Terrestrial organic matter and light penetration: Effects on bacterial and primary production in lakes, Limnol. Oceanogr., 54, 2034–2040, https://doi.org/10.4319/lo.2009.54.6.2034, 2009. a, b
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Although rivers carry large amounts of organic material to the oceans, little is known about what fate it meets when it reaches the sea. In this study we are investigating the fate of the carbon in this organic matter by the use of a numerical model in combination with ship measurements from the northern Baltic Sea. Our results suggests that there is substantial remineralization taking place, transforming the organic carbon into CO2, which is released to the atmosphere.
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