Composition of freshwater bacterial communities associated with cyanobacterial blooms in four Swedish lakes

摘要: The diversity of freshwater bacterioplankton communities has not been extensively studied despite their key role in foodwebs and the cycling carbon associated major elements. In order to explore characterize composition with cyanobacterial blooms, large 16S rRNA clone libraries from four lakes experiencing such blooms were analysed. contained 1461 clones, which 559 prokaryotic sequences non-cyanobacterial origin. These clones classified into 158 operational taxonomic units affiliated mainly bacterial divisions commonly found systems, e.g. Proteobacteria, Bacteriodetes, Actinobacteria, Verrucomicrobia Planctomycetes. Richness evenness similar other obtained for bacterioplankton, suggesting that accompanying are as diverse non-bloom communities. Many identified grouped known clusters but also novel may be characteristic blooms. About 25% detected more than one lake. Even so, heterogeneity analysis demonstrated differences community between regardless characteristics close proximity. Hence even environmental conditions created by different foster very dissimilar communities, could indicate genetic lake bacteria have underestimated past.