13C-contents of sedimentary bacterial lipids in a shallow sulfidic monomictic lake (Lake Cisó, Spain)
作者： Walter A Hartgers , Stefan Schouten , Jordi F Lopez , Jaap S Sinninghe Damsté , Joan O Grimalt
DOI: 10.1016/S0146-6380(00)00095-4
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摘要: Abstract Stable carbon isotopic analysis was performed on sedimentary biomarkers of a shallow sulfide-rich monomictic lake, Lake Ciso (NE Spain). Specific derived from phototrophic sulfur bacteria in were considerably depleted 13C, most likely due to the 13C-content dissolved inorganic that photosynthetically fixed. Recycling respired CO2, well-known phenomenon lakes, probably caused this depletion. The stable composition terrestrial markers, such as C25–33 odd-carbon-numbered n-alkanes and C22–30 even-carbon-numbered n-alkan-1-ols fatty acids, rather similar each other their 13C values (c. −31 −35‰) indicated they surrounding vegetation. Phytol predominantly bacteriochlorophylls purple specific acids.
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