Articles | Volume 13, issue 17
Biogeosciences, 13, 5003–5019, 2016
https://doi.org/10.5194/bg-13-5003-2016

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

Biogeosciences, 13, 5003–5019, 2016
https://doi.org/10.5194/bg-13-5003-2016

Research article 09 Sep 2016

Research article | 09 Sep 2016

Fate of terrigenous organic matter across the Laptev Sea from the mouth of the Lena River to the deep sea of the Arctic interior

Lisa Bröder et al.

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Cited articles

Aller, R. C. and Blair, N. E.: Carbon remineralization in the Amazon-Guianas tropical mobile mudbelt: A sedimentary incinerator, Cont. Shelf Res., 26, 2241–2259, 2006.
Belicka, L. L., Macdonald, R. W., Yunker, M. B., and Harvey, H. R.: The role of depositional regime on carbon transport and preservation in Arctic Ocean sediments, Mar. Chem., 86, 65–88, 2004.
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Boetius, A. and Damm, E.: Benthic oxygen uptake, hydrolytic potentials and microbial biomass at the Arctic continental slope, Deep-Sea Res. Pt. I, 45, 239–275, 1998.
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Short summary
Thawing permafrost may release large amounts of terrestrial organic carbon (TerrOC) to the Arctic Ocean. We assessed its fate in the marine environment with a suite of biomarkers. Across the Laptev Sea their concentrations in surface sediments decreased significantly and showed a trend to qualitatively more degraded TerrOC with increasing water depth. We infer that the degree of degradation of TerrOC is a function of the time spent under oxic conditions during protracted cross-shelf transport.
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