Fig. 1
From: Long-term in situ permafrost thaw effects on bacterial communities and potential aerobic respiration
Bacterial community structure based on 16S rRNA V3 region. a Principal coordinates analysis of weighted UniFrac distances; markers and error bars represent mean and standard error, respectively, of coordinates on the ordination axes for each depth × treatment combination (n = 6, except intermediate layer–deep thaw where n = 5); different letters denote significantly different communities (manyglm post hoc, see SI Table S4). b Mean relative abundance of phyla in each depth × treatment combination; dashed rectangles enclose permanently frozen samples. c Phylum distribution, abundance, and abundance change of the 149 OTUs that are different in the intermediate layer between the deep-thaw and control treatments (DEseq2 NB Wald test). Each bar represents the log2 of the fold change between control and deep-thaw samples for one OTU; dots represent the relative abundance of the OTU in the entire rarefied dataset, black dots indicate abundant OTUs (>0.5%, SI Table S2); number of OTUs in the legend is for the intermediate layer, while the percentages show what portion of those is in (c)
