Number of bacterial taxa with at least one SNP association reaching suggestive significance per season.

For each season, the total number of bacterial taxa examined and number of single-nucleotide polymorphisms (SNPs) tested are listed. The number of taxa for which at least one SNP was associated with abundance at either a Bonferroni corrected P-value cutoff or a q-value cutoff of 0.1 or 0.2 are listed. The total number of taxa for which at least one associated SNP fell below q-value ≤ 0.2 or a Bonferroni threshold are listed under “total significant”.