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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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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