Fig. 3

Biogeography of niche breadth groups and their relationship with meteorological factors. a Number of generalists, specialists, and uncategorized in Tibetan plateau (TP), Arcitc (ARC), and Alpine (ALP). The adjacent box plots show the difference in estimated genome size, GC content, and gene redundancy index within each subcategory. Adjacent stacked bar plots indicate their taxonomic composition at the phylum level (Proteobacteria phylum was at class level). b Relationship between community compositions and meteorological factors in all SGBs, generalist, and specialist based on redundancy analysis (RDA). All meteorological factors were tested in RDA analysis using the envfit function with 999 permutations. Significance level: **** (p ≤ 0.0001); *** (p ≤ 0.001); ** (p ≤ 0.01); * (p < 0.05). c Linear fit between the abundance of SGBs and radiation (MJ/\({m}^{2}\)) across niche breadth groups. d Correlation of each SGB between radiation and distribution of SGBs based on their logged mean read recruitments across cryoconite samples (X axis) and Levin’s Index (i.e., niche breadth, Y axis). The color gradient depicts Spearman’s correlation coefficient with radiation of each SGB and point shape indicates niche breadth groups