Fig. 3

Principal coordinates analysis of bacterial and fungal communities in different samples of natural DCXC. Percentages on the axes of the graph represent the explained variance of total variance. The OTU data matrix used in the analyses was clustered at the 97 % similarity and the principal coordinates analysis was based on the jclass model. OTUs shown in the profiles were relatively more abundant ones. The circle in color indicated the four samples distributed in the ordination. The circle in gray indicated the OTUs that areas symbolize the abundant, and the different circles indicated the number of sequences contained in each OTU