Fig. 5From: Diversity of active root-associated methanotrophs of three emergent plants in a eutrophic wetland in northern ChinaAlpha diversity and beta-diversity of aerobic methanotroph calculation based on pmoA. The OTUs evenness of root microbiotas is shown by Shannon(a). The red boxplot based on DNA; the green boxplot based on cDNA. Error bars represent the standard error of the mean. Bars with the different letter (a, b or c) within a panel (DNA or cDNA) are significantly different (p < 0.05). The distance between samples of principal coordinates analysis (PCoA) (b) calculated using Bray–Curtis indexBack to article page