FIGURE 5.

Taxonomy classification at the phylum level. (A) Actinobacteria and Proteobacteria trends in the dataset. (B) Linear model relation between Actinobacteria and Proteobacteria relative abundances (p-value = 3 × 10^{– 15}). (C) Remaining phylum trends in the datasets. Spearman’s rank correlation coefficient (r_s) was calculated between the sample distance and the relative abundance data for each phylum. r_s is reported below the appropriate line plot only when significant (p-value < 0.05). *Soil samples are categorized in relation to their distance from the ice edge (m).