Rainfall predicts the relative abundance of many bacterial taxa. a Families and b Genera that are found differentially abundant according to cumulative rainfall. The estimate of the cumulative rainfall effect for each taxon comes from a negative binomial GLMM modeled separately for the counts of each taxon across samples (controlling for sequencing depth as an offset factor, and including individual and unit membership as random effects). Taxa starting with “*” were fit with a binomial model instead. Only taxa with pBH < 0.05 were considered significant. For ease of representation on panel B, only genera with effect sizes > |0.2| are represented. The full list of differentially abundant genera can be found in Table S7. Assignment of the “broad function” of a family or genus is for representation only, and is a simplification of the various functions subsumed within each taxonomic group.