Cladogram showing the phylogenetic distribution of the bacterial lineages associated with rhizosphere soil from four growth stages in the rice-crab paddy field. (A) Indicator bacteria with LDA scores of 3.5 or greater in bacterial communities associated with soil from four stages in the coupled rice-crab paddy field. (B) Different coloured regions represent different constituents. Circles indicate phylogenetic levels from phylum to genus. The diameter of each circle is proportional to the abundance of the group.