Number of topics at each taxonomic level that showed statistically significant relationships between topics and plant traits based on a Spearman’s rank correlation coefficient with Holm–Bonferroni correction.

The numbers in parentheses represent number of different topics associated with significant relationships and overall number of topics used in LDA at taxonomic level. The last four columns are Leaf mass per area, % Leaf water content, Stomatal conductance, and Water use efficiency.