Linking planktonic microbial community structure to subsurface methane maximum in deep Japanese freshwater lakes

The 16S rRNA gene amplicon sequencing was performed to examine the relationships between the planktonic bacterial community structure and vertical methane profile in oxic waters of nine deep freshwater lakes in Japan. The DNA samples were collected from the filter samples of lake water collected at the epilimnion, metalimnion and hypolimnion of each lake during the summer stratification period (from July to September) in 2016-2017.