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| Microbial characteristics in the sediments of Baiyangdian Lake utilizing phospholipid fatty acids analysis |
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Abstract Microbial biomass and community structure in surface sediments of Baiyangdian Lake were studied with the technology of phospholipid fatty acid(PLFA) analysis. The results showed that there were mostly branched chain saturated fatty acids in sediments and the dominated bacterial biomass averaged 4.24×109 cells/g(counted by dry weight). Anaerobic bacteria and G+ were the major microbial type, while there were still large amount of aerobic bacteria in surface sediments. Correlation analysis indicated that water depth had great effect on sediment bacterial biomass and biodiversity. Phosphorus could be the limited nutrient factor for the microbial biomass and abundance in sediments. Principle component analysis (PCA) showed that there were region distribution characteristics in sediment microbial community structure.
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Received: 09 February 2011
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