The Influence of Above-Ground Herbivory on the Response of Arctic Soil Methanotrophs to Increasing CH₄ Concentrations and Temperatures.

ABSTRACT: Rising temperatures in the Arctic affect soil microorganisms, herbivores, and peatland vegetation, thus directly and indirectly influencing microbial CH₄ production. It is not currently known how methanotrophs in Arctic peat respond to combined changes in temperature, CH₄ concentration, and vegetation. We studied methanotroph responses to temperature and CH₄ concentration in peat exposed to herbivory and protected by exclosures. The methanotroph activity was assessed by CH₄ oxidation rate measurements using peat soil microcosms and a pure culture of Methylobacter tundripaludum SV96, qPCR, and sequencing of pmoA transcripts. Elevated CH₄ concentrations led to higher CH₄ oxidation rates both in grazed and exclosed peat

SUBMITTER: Rainer EM 

PROVIDER: S-EPMC8540837 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature