Abstract Small lakes, being less stable systems as compared to large lakes, are sensitive to climate variations and are characterized by high sedimentation rates, and thus, they represent important archives of paleoenvironmental information. Lipid biomarkers in bottom sediments provide data on the environmental conditions in and around lakes and can be used as additional indirect indicators for paleoreconstruction of lake sedimentogenesis. The distribution of lipid biomarkers in sediments of Gusinoe Lake was determined for the first time using gas chromatography (GC) and GC-mass-spectrometry. The main lipid biomarkers of the terrestrial (long-chain fatty acids, alcohols, dicarboxylic acids, and β-sitosterol) and aquatic (short-chain fatty acids, hydroxy acids, etc.) origins of organic matter were revealed. The distribution of the carbon preference index (CPI) in the core of bottom sediments of Gusinoe Lake testifies to the transition from cold and dry (lower core layers) to warm and humid climatic conditions.

中文翻译：

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Gusinoe湖（贝加尔湖盆地）底部沉积物的脂质生物标志物作为湖泊沉积作用的古生物标志物

摘要 与大型湖泊相比，小型湖泊系统稳定性较差，对气候变化敏感，沉积速率高，因此是重要的古环境信息档案。底部沉积物中的脂质生物标志物提供了湖泊内外环境条件的数据，可用作湖泊沉积作用古重建的额外间接指标。首次使用气相色谱 (GC) 和 GC-质谱法确定了 Gusinoe 湖沉积物中脂质生物标志物的分布。揭示了有机物质的陆地（长链脂肪酸、醇、二羧酸和 β-谷甾醇）和水生（短链脂肪酸、羟基酸等）来源的主要脂质生物标志物。