Metabolic capabilities mute positive response to direct and indirect impacts of warming throughout the soil profile.

ABSTRACT: Increasing global temperatures are predicted to stimulate soil microbial respiration. The direct and indirect impacts of warming on soil microbes, nevertheless, remain unclear. This is particularly true for understudied subsoil microbes. Here, we show that 4.5 years of whole-profile soil warming in a temperate mixed forest results in altered microbial community composition and metabolism in surface soils, partly due to carbon limitation. However, microbial communities in the subsoil responded differently to warming than in the surface. Throughout the soil profile-but to a greater extent in the subsoil-physiologic and genomic measurements show that phylogenetically different microbes could utilize complex organic compounds, dampening the effect of altered resource availability induced by wa

SUBMITTER: Dove NC 

PROVIDER: S-EPMC8027381 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature