Distinct Growth Responses of Tundra Soil Bacteria to Short-Term and Long-Term Warming.

ABSTRACT: Increases in Arctic temperatures have thawed permafrost and accelerated tundra soil microbial activity, releasing greenhouse gases that amplify climate warming. Warming over time has also accelerated shrub encroachment in the tundra, altering plant input abundance and quality, and causing further changes to soil microbial processes. To better understand the effects of increased temperature and the accumulated effects of climate change on soil bacterial activity, we quantified the growth responses of individual bacterial taxa to short-term warming (3 months) and long-term warming (29 years) in moist acidic tussock tundra. Intact soil was assayed in the field for 30 days using ¹⁸O-labeled water, from which taxon-specific rates of ¹⁸O incorporation into DNA were estimate

SUBMITTER: Propster JR 

PROVIDER: S-EPMC10056963 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature