Coupling Bacterial Community Assembly to Microbial Metabolism across Soil Profiles.

ABSTRACT: Soil microbial community assembly is crucial for understanding the mechanisms of microbial communities that regulate ecosystem-level functioning. The relative contributions of stochastic and deterministic processes to microbial community assembly remain poorly defined, and major questions exist concerning the soil organic carbon (SOC) dynamics of microbial community assembly in deep soil. Here, the bacterial community assembly processes were explored across five soil profile depths (up to 80 cm) during a 15-year field experiment involving four fertilization regimes. We found that the bacterial community assembly was initially governed by deterministic selection in topsoil but was progressively structured by increasing stochastic dispersal with depth. The migration rate (m) and β-nul

SUBMITTER: Luan L 

PROVIDER: S-EPMC7289589 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature