Fig. 5.

Bacterial community structure shaped by environmental parameters determined by a constrained analysis of principal coordinates (CAP) of a selected data set. The NC samples and all samples with < 277 cells ml⁻¹ were excluded from the analysis. OTUs that do not appear more than 5 times in at least 1% of the samples were removed. The CAP was calculated based on weighted UniFrac distances. The parameter cells_ml x + condition + storage + copies + in_use + open + storage_device + material were used as constrained variables. Black colored shapes depict samples encoding for different institutes including the ID shown as numbers. Colored circles depict the selected taxa encoding for the 20 most abundant genera