Bacteriohopanepolyols in the Yenisei River and its outflow in the Kara Sea, SPM and sediments ...

• Main Authors: De Jonge, Cindy, Talbot, Helen M, Bischoff, James L, Stadnitskaia, Alina, Cherkashov, Georgy A, Sinninghe Damsté, Jaap S
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University NIOZ_UU; Arctic Ocean; Kara Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.878023; https://doi.pangaea.de/10.1594/PANGAEA.878023

Bacteriohopanepolyols (BHPs) are ubiquitous bacterial membrane lipids, encountered in soils, river and marine suspended particulate matter (SPM) and sediments. Their abundance and distribution provides a direct means to identify bacterial inputs and can be used to trace soil-derived bacterial organic matter (OM) and in some cases the presence of bacterial groups and their activities in aquatic systems. We have studied the BHP distribution in the SPM of a major Siberian River (Yenisei River) that crosses a large latitudinal gradient, draining a large part of Mongolia and Siberian Russia. The Yenisei River is the main river to flow into the Kara Sea, a shelf sea of the Arctic Ocean. We show that the BHP distribution and concentration of SPM and surface sediments of the Yenisei Outflow in the Kara Sea allow to trace soil-marker BHPs and evaluate the performance of the R'soil index, a proxy developed to trace bacterial soil-derived OM. Soil-marker BHPs are present in the Yenisei River, and their concentration ... : Supplement to: De Jonge, Cindy; Talbot, Helen M; Bischoff, James L; Stadnitskaia, Alina; Cherkashov, Georgy A; Sinninghe Damsté, Jaap S (2016): Bacteriohopanepolyol distribution in Yenisei River and Kara Sea suspended particulate matter and sediments traces terrigenous organic matter input. Geochimica et Cosmochimica Acta, 174, 85-101 ...