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Boxplots with error bars showing the alpha diversity indices of bacterial communities in the sediments of Lianhuan Lake. (a) ACE index; (b) Chao1 index; (c) Shannon index; and (d) Simpson index. Lowercase letters indicate significant differences (p < 0.05) between sampling groups. Significant variations between experimental groups were identified via ANOVA followed by the Waller–Duncan post hoc test for pairwise comparisons.
