Figure 2

The relative abundances of microbes annotated for the 16S rRNA amplicon datasets at the domain (a), class (b) and genus (c) levels for groundwater samples collected from the Ryukyu limestone aquifer in November and December 2021 and in January 2022. “Others (< 1%)” indicates those with relative abundances less than 1%. Refer to the legends of Fig. 1 for the three sampling sites. Only taxonomic groups in the class and genus levels with relative abundances more than > 2.0% are listed.