Articles | Volume 13, issue 22
Biogeosciences, 13, 6121–6138, 2016
https://doi.org/10.5194/bg-13-6121-2016

Special issue: Climate–carbon–cryosphere interactions in the...

Biogeosciences, 13, 6121–6138, 2016
https://doi.org/10.5194/bg-13-6121-2016
Research article
14 Nov 2016
Research article | 14 Nov 2016

Contrasting composition of terrigenous organic matter in the dissolved, particulate and sedimentary organic carbon pools on the outer East Siberian Arctic Shelf

Joan A. Salvadó et al.

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Cited articles

Alling, V., Porcelli, D., Morth, C. M., Anderson, L. G., Sanchez-Garcia, L., Gustafsson, O., Andersson, P. S., and Humborg, C.: Degradation of terrestrial organic carbon, primary production and out-gassing of CO2 in the Laptev and East Siberian Seas as inferred from delta C-13 values of DIC, Geochim. Cosmochim. Ac., 95, 143–159, 2012.
Alling, V., Sanchez-Garcia, L., Porcelli, D., Pugach, S., Vonk, J. E., van Dongen, B., Morth, C.-M., Anderson, L. G., Sokolov, A., Andersson, P., Humborg, C., Semiletov, I., and Gustafsson, O.: Nonconservative behavior of dissolved organic carbon across the Laptev and East Siberian seas, Global Biogeochem. Cy., 24, 143–159, 2010.
Amon, R. M. W. and Benner, R.: Combined neutral sugars as indicators of the diagenetic state of dissolved organic matter in the Arctic Ocean, Deep-Sea Res. Pt. I, 50, 151–169, 2003.
Amon, R. M. W. and Meon, B.: The biogeochemistry of dissolved organic matter and nutrients in two large Arctic estuaries and potential implications for our understanding of the Arctic Ocean system, Mar. Chem., 92, 311–330, 2004.
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Short summary
Fluvial discharge and coastal erosion of the permafrost-dominated East Siberian Arctic delivers large quantities of terrigenous organic carbon (Terr-OC) to marine waters. We assessed its fate and composition in different marine pools with a suite of biomarkers. The dissolved organic carbon is transporting off-shelf “young” and fresh vascular plant material, while sedimentary and near-bottom particulate organic carbon preferentially carries old organic carbon released from thawing permafrost.
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