Temporal and spatial variability in nearshore bacterioplankton communities of Lake Michigan

摘要: The spatial and temporal variability of bacterial communities were determined for the nearshore waters Lake Michigan, an oligotrophic freshwater inland sea. A estuary sites compared six times during 2006 using denaturing gradient gel electrophoresis (DGGE). Bacterial composition clustered by individual site date rather than depth. Seven 16S rRNA gene clone libraries constructed, yielding 2717 sequences. Spatial was detected among DGGE banding patterns supported library composition. from deep environment revealed highest overall diversity. Betaproteobacteria sequence types most dominant taxa, comprising 40.2-67.7% libraries. BAL 47 abundant cluster Betaproteobacteria, indicating widespread distribution this in Michigan. Incertae sedis 5 Oxalobacteraceae prevalent each library, displaying more diversity previously described other environments. Among sequences, a globally distributed determined. Michigan are dynamic that experience forces similar to coastal ocean share common with habitats.