Articles | Volume 20, issue 7
https://doi.org/10.5194/bg-20-1423-2023
https://doi.org/10.5194/bg-20-1423-2023
Research article
 | Highlight paper
 | 
12 Apr 2023
Research article | Highlight paper |  | 12 Apr 2023

Particulate organic matter in the Lena River and its delta: from the permafrost catchment to the Arctic Ocean

Olga Ogneva, Gesine Mollenhauer, Bennet Juhls, Tina Sanders, Juri Palmtag, Matthias Fuchs, Hendrik Grotheer, Paul J. Mann, and Jens Strauss

Related authors

High-resolution bathymetry models for the Lena Delta and Kolyma Gulf coastal zones
Matthias Fuchs, Juri Palmtag, Bennet Juhls, Pier Paul Overduin, Guido Grosse, Ahmed Abdelwahab, Michael Bedington, Tina Sanders, Olga Ogneva, Irina V. Fedorova, Nikita S. Zimov, Paul J. Mann, and Jens Strauss
Earth Syst. Sci. Data, 14, 2279–2301, https://doi.org/10.5194/essd-14-2279-2022,https://doi.org/10.5194/essd-14-2279-2022, 2022
Short summary
Organic matter characteristics of a rapidly eroding permafrost cliff in NE Siberia (Lena Delta, Laptev Sea region)
Charlotte Haugk, Loeka L. Jongejans, Kai Mangelsdorf, Matthias Fuchs, Olga Ogneva, Juri Palmtag, Gesine Mollenhauer, Paul J. Mann, P. Paul Overduin, Guido Grosse, Tina Sanders, Robyn E. Tuerena, Lutz Schirrmeister, Sebastian Wetterich, Alexander Kizyakov, Cornelia Karger, and Jens Strauss
Biogeosciences, 19, 2079–2094, https://doi.org/10.5194/bg-19-2079-2022,https://doi.org/10.5194/bg-19-2079-2022, 2022
Short summary

Cited articles

Allen, A. P., Gillooly, J. F., and Brown, J. H.: Linking the global carbon cycle to individual metabolism, Funct. Ecol., 19, 202–213, https://doi.org/10.1111/j.1365-2435.2005.00952.x, 2005. 
Amon, R. M. W., Rinehart, A. J., Duan, S., Louchouarn, P., Prokushkin, A., Guggenberger, G., Bauch, D., Stedmon, C., Raymond, P. A., Holmes R. M., McClelland, J. W., Peterson, B. J., Walker S. A., and Zhulidov, A. V.: Dissolved organic matter sources in large Arctic rivers, Geochim. Cosmochim. Ac., 94, 217–237, https://doi.org/10.1016/j.gca.2012.07.015, 2012. 
Andersson, A.: A systematic examination of a random sampling strategy for source apportionment calculations, Sci. Total Environ., 412–413, 232–238, https://doi.org/10.1016/j.scitotenv.2011.10.031, 2011. 
Antonov, V. S.: The Lena River Delta – Works of oceanographic committee of the Acad, Sci. USSR, Vol. VI, 25–34, 1960 (in Russian). 
Ballinger, T. J., Overland, J. E., Wang, M., Bhatt, U. S., Hanna, E., Hanssen-Bauer, I., Kim, S.-J., Thoman, R. L., and Walsh, J. E.: Arctic Report Card 2020: Surface Air Temperature, in: NOAA Arctic Report Card 2020, 21–27, edited by: Thomas, R. L., Richter-Menge, J., and Drukenmiller, M. L., 141 pp., https://doi.org/10.25923/gcw8-2z06, 2020. 
Download
Co-editor-in-chief
While the source and fate of particulate organic matter (POM) are better understood in riverine, deltaic, and lake systems, this paper provides an insight on POM dynamics in a permafrost catchment, while combining a multiple proxy approach (particulate organic carbon - POC, total suspended matter - TSM, carbon isotopes - d13C and d14C - in POC). Combined with mixing models, these findings help decipher the potential sources for authochtonous and allochtnonous organic matters, and hence provide important insights in the role of permafrost for the organic carbon mobilization in the Arctic region.
Short summary
Arctic warming accelerates permafrost thaw and release of terrestrial organic matter (OM) via rivers to the Arctic Ocean. We compared particulate organic carbon (POC), total suspended matter, and C isotopes (δ13C and Δ14C of POC) in the Lena delta and Lena River along a ~1600 km transect. We show that the Lena delta, as an interface between the Lena River and the Arctic Ocean, plays a crucial role in determining the qualitative and quantitative composition of OM discharged into the Arctic Ocean.
Share
Altmetrics
Final-revised paper
Preprint