Dissolved organic matter in the Lena Delta in 2009 ...

• Main Authors: Dubinenkov, Ivan, Flerus, Ruth, Schmitt-Kopplin, Philippe, Kattner, Gerhard, Koch, Boris P
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Sample ID; DATE/TIME; Location type; LATITUDE; LONGITUDE; Depth, bathymetric; DEPTH, water; Carbon, organic, dissolved; Nitrogen, total dissolved; Multiple investigations; High temperature catalytic oxidation; RU-Land_2009_Lena; AWI Arctic Land Expedition; Coastal Ecology @ AWI AWI_Coast; Arctic; Arctic Ocean; Buor-Khaya; Khaya; Laptev Sea; Ice; laptev; lena delta; lena river; permafrost
• Online Access: https://dx.doi.org/10.1594/pangaea.831765; https://doi.pangaea.de/10.1594/PANGAEA.831765

Large Arctic rivers discharge significant amounts of dissolved organic matter (DOM) into the Arctic Ocean. We sampled natural waters of the Lena River, the Buor-Khaya Bay (Laptev Sea), permafrost melt water creeks, ice complex melt water creeks and a lake. The goal of this study was to characterize the molecular DOM composition with respect to different water bodies within the Lena Delta. We aimed at an identification of source-specific DOM molecular markers and their relative contribution to DOM of different origin. The molecular characterization was performed for solid-phase extracted DOM by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Average dissolved organic carbon concentrations in the original samples were 490±75 µmol C/L for riverine and bay samples and 399±115 µmol C/L for permafrost melt water creeks. Average TDN concentrations were elevated in the permafrost melt waters (19.7±7.1 µmol N/L) in comparison to the river and the bay (both 13.2±2.6 µmol N/L). FT-ICR MS and ... : Supplement to: Dubinenkov, Ivan; Flerus, Ruth; Schmitt-Kopplin, Philippe; Kattner, Gerhard; Koch, Boris P (2014): Origin-specific molecular signatures of dissolved organic matter in the Lena Delta. Biogeochemistry, 123(1-2), 1-14 ...