From Soil to Ocean: Transfer of terrigenous organic carbon from permafrost soils to the Arctic Ocean

在此，我们请求提供资金，以支持在斯匹次卑尔根岛巴耶尔瓦流域开展一项取样活动，在此期间将收集土壤和沉积物样本。这些样本将用作研究陆源有机物向北冰洋转移的更大研究项目的基础。为了评估全球气温上升对北极环境中有机碳（OC）储量的影响，我们的项目旨在调查陆地OC从冻土到北冰洋的转移。结合特定化合物同位素，沿运输轨迹沿着对散装土壤和沉积物进行详细的成分分析所选脂质生物标志物的（13 C和14 C）分析将用于：确定永久冻土中土壤有机碳的合适生物标志物确定所选生物标志物在永久冻土中的停留时间，河流和浅海沉积物量化从源（土壤）到汇（海洋沉积物）的碳转移及其时间尺度研究转移过程中发生的蚀变过程。

Here we request funds for supporting a sampling campaign in the Bayelva drainage area, Spitsbergen, during which soil and sediment samples will be collected. These samples will be used as basis for a larger research project studying transfer of terrigenous organic matter to the Arctic Ocean. In order to estimate the effect of rising global temperatures on organic carbon (OC) stocks in the temperature-sensitive Arctic environment, our project aims at investigating the transfer of terrestrial OC from permafrost soils to the Arctic Ocean. Detailed compositional analyses of bulk soil and sediments along a transport trajectory combined with compound-specific isotopic (13C and 14C) analysis of selected lipid biomarkers will be used to: Identify suitable biomarkers for soil organic carbon in permafrost soils Determine residence times of selected biomarkers in permafrost soils, fluvial and shallow marine sediments Quantify carbon transfer from source (soil) to sink (marine sediment) and its timescale Study alteration processes occurring during transport.