Rainfall Shapes the Diversity of Soil Nitrogen‐Fixing Microorganisms Worldwide
ABSTRACT Soil nitrogen‐fixing microorganisms naturally fertilize terrestrial ecosystems, but the primary driver of their diversity across the globe and the underlying mechanisms remain unclear. We analyzed the nifH gene in 1257 (1137 publicly available + 120 self‐generated) soil metagenomes from 318 terrestrial ecosyst...