Methods -Bacterial abundance: Direct microscopy on polycarbonate filters (DAPI-staining) -Bacterial production: Rates of protein synthesis with 3 H-Leucine -Bacterial community composition: Fluorescent In Situ Hybridization  -Proteobacteria (Alfa)  -Proteobacteria (Gamma) Cytophaga-Flexibacter-Bacteroidetes (CTB) Cycloclasticus spp.
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