Fig. 4.

Cell numbers of SCs and net growth rates ${\text{μ}}^{\prime }S{C}_x$ (x $=$ 1 to 80), determined for the balanced periods of the different phases in the local communities L1–L5 and the regional pool (R). On the left, the net growth rate ${\text{μ}}^{\prime }S{C}_x$ (day⁻¹) is presented only for dominant SCs with relative abundances $>$1.25% in at least one sample during the corresponding periods in L1–L5 and R. The color gradient and size of the red circles represent the value of positive ${\text{μ}}^{\prime }S{C}_x$. Darker colors and larger circles indicate higher ${\text{μ}}^{\prime }S{C}_x$ values for positive net growth. All blue circles represent zero net growth ${\text{μ}}^{\prime }S{C}_x.$ The SCs are ranked in descending order according to their mean cell number (cells per milliliter) for all days and all reactors. Cell numbers of x $=$ 80 SCs of a total of 421 samples are shown as a boxplot on the right. Outliers of deviated cell number values are shown as points.