Articles | Volume 13, issue 17
https://doi.org/10.5194/bg-13-4899-2016
https://doi.org/10.5194/bg-13-4899-2016
Research article
 | 
06 Sep 2016
Research article |  | 06 Sep 2016

Source, transport and fate of soil organic matter inferred from microbial biomarker lipids on the East Siberian Arctic Shelf

Juliane Bischoff, Robert B. Sparkes, Ayça Doğrul Selver, Robert G. M. Spencer, Örjan Gustafsson, Igor P. Semiletov, Oleg V. Dudarev, Dirk Wagner, Elizaveta Rivkina, Bart E. van Dongen, and Helen M. Talbot

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Cited articles

Bednarczyk, A., Hernandez, T. C., Schaeffer, P., Adam, P., Talbot, H. M., Farrimond, P., Riboulleau, A., Largeau, C., Derenne, S., Rohmer, M., and Albrecht, P.: 32,35-Anhydrobacteriohopanetetrol: an unusual bacteriohopanepolyol widespread in recent and past environments, Organic Geochem., 36, 673–677, https://doi.org/10.1016/j.orggeochem.2004.10.014, 2005.
Bischoff, J.: Microbial communities and their response to Pleistocene and Holocene climate variabilities in the Russian Arctic, Ph.D. thesis, 2013.
Bischoff, J., Mangelsdorf, K., Gattinger, A., Schloter, M., Kurchatova, A. N., Herzschuh, U., and Wagner, D.: Response of methanogenic archaea to Late Pleistocene and Holocene climate changes in the Siberian Arctic, Global Biogeochem. Cy., 27, 305–317, https://doi.org/10.1029/2011GB004238, 2013.
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Blumenberg, M., Seifert, R., Kasten, S., Bahlmann, E., and Michaelis, W.: Euphotic zone bacterioplankton sources major sedimentary bacteriohopanepolyols in the Holocene Black Sea, Geochim. Cosmochim. Acta, 73, 750–766, https://doi.org/10.1016/j.gca.2008.11.005, 2009.
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The Arctic contains a large pool of carbon that is vulnerable to warming and can be released by rivers and coastal erosion. We study microbial lipids (BHPs) in permafrost and shelf sediments to trace the source, transport and fate of this carbon. BHPs in permafrost deposits are released to the shelf by rivers and coastal erosion, in contrast to other microbial lipids (GDGTs) that are transported by rivers. Several further analyses are needed to understand the complex East Siberian Shelf system.
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