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Phylogenetic composition similarities between polar freshwater assemblages. The figures depict results from Double Principal Coordinates Analyses (DPCoA) based on 16S (A) and 18S (B) marker gene profiles. The analysis ordinates the sites (white boxes) based on the phylogenetic distances and per-site relative abundances of OTUs. The position of each point (OTU) represents its association with each site. Points are colored and collectively labeled based on their taxonomic affiliation.
