Fig. 1: Overview of bacterial microbiota abundance and composition.

From read mapping to the genomic database, abundance was calculated for each microbial taxa across all samples. Stacked bar charts show the most abundant bacteria (a) phyla and (b) genera per sample, proportional to the total microbiota within each sample (n = 113 biologically independent samples). Charts were generated using normalised, zero-corrected abundance matrices. “Unknown” represents abundance data for which a putative taxonomic classification could not be assigned. “-Others” represents abundance data for all other taxa in the abundance data set.