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Bacteriohopanepolyols (BHPs) are a diverse group of membrane lipids produced by a wide variety of bacteria and can be used as molecular biomarkers for bacterial processes and populations in both modern and ancient environments. A group of BHPs, including adenosylhopane and structurally related compounds, have been identified as being specific to soils, enabling the transport of terrestrial organic...
To understand the variations of organic carbon inputs in high latitude rivers, we tracked the changes in fatty acid concentrations and their stable carbon isotopic compositions in dissolved (DOM, <1kDa), colloidal (COM, 1kDa to 0.45μm) and particulate (POM, >0.45μm) organic matter collected from the upper Yukon River (Alaska, USA) during ice-open season from May to September 2002. In spite of...
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