Relative importance of different ecological processes. (A and B) Relative importance of different ecological processes in the control and SRB-inhibited treatment groups, respectively. (DL, dispersal limitation; DR, drift; HoS, homogeneous selection; HeS, heterogeneous selection). (C and D) Changes of homogeneous selection (HoS) and dispersal limitation (DL) in the control (orange box) and SRB-inhibited treatment (blue box) groups. (E and F) Stochasticity estimated in the control and the SRB-inhibited treatment groups across incubation days. In panels C to F, colored orange and blue symbols represent the control and SRB-inhibited treatment groups, respectively. D00, D05, D12, D21, and D30 represent 0, 5, 12, 21, and 30 days of incubation, respectively. L, M, and S represent large (|d| > 0.8), medium (0.5 < |d| ≤ 0.8), small (0.2 < |d| ≤ 0.5), and negligible (|d| ≤ 0.2) effect sizes of inhibiting SRB, based on Cohen’s d (the mean difference between the control and SRB-inhibited treatment groups divided by pooled standard deviation) in panels C to E. Mann-Whitney U test results are shown in panel F. *, 0.01 < P ≤ 0.05; **, 0.001 < P ≤ 0.01; ***, P ≤ 0.001.