Distinctive pattern and mechanism of precipitation changes affecting soil microbial assemblages in the Eurasian steppe.

ABSTRACT: Precipitation may increase or decrease by different intensities, but the pattern and mechanism of soil microbial community assembly under various precipitation changes remain relatively underexplored. Here, although ±30% precipitation caused a small decrease (∼19%) in the within-treatment taxonomic compositional dissimilarity through the deterministic competitive exclusion process in a steppe ecosystem, ±60% precipitation caused a large increase (∼35%) in the dissimilarity through the stochastic ecological drift process (random birth/death), which was in contrast with the traditional thought that increasing the magnitude of environmental changes (e.g., from +30% to +60%) would elevate the importance of deterministic relative to stochastic processes. The increased taxonomic dissimilarity/st

SUBMITTER: Xu M 

PROVIDER: S-EPMC8866155 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature