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Fig. 1 | BMC Microbiology

Fig. 1

From: Alterations in the intestinal microbiome and mental health status of workers in an underground tunnel environment

Fig. 1

a Microbial alpha diversity in ES and BS. Boxplot showed greater gut microbial diversity in BS than ES according to Shannon (t = 3.375, P = 0.001) and Simpson (t = 2.757, P = 0.008) indices with paired samples t-test. b Microbial beta diversity. Principal coordinate analysis (PCoA) of ES compared to BS based on Bray-Curtis dissimilarities in the relative abundance of ASVs (PERMANOVA, R2 = 0.028, P = 0.002)

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