Mean concentration (log10 copy numbers mL−1 effluent) of specific bacterial groups measured by qPCR in the fecal inoculum and effluent samples from inoculum reactor (IR) and control reactor (CR) during the stabilized period (d11-54).

Mean values ± SD for IR and CR were calculated from daily values during the experimental stabilized period corresponding to d11-54.IR与CR的平均值±标准差（Standard Deviation）由对应实验稳定期（第11天至第54天）内的每日观测值计算得出。