Bioindicator "fingerprints" of methane-emitting thermokarst features in Alaskan soils.

ABSTRACT: Permafrost thaw increases the bioavailability of ancient organic matter, facilitating microbial metabolism of volatile organic compounds (VOCs), carbon dioxide, and methane (CH₄). The formation of thermokarst (thaw) lakes in icy, organic-rich Yedoma permafrost leads to high CH₄ emissions, and subsurface microbes that have the potential to be biogeochemical drivers of organic carbon turnover in these systems. However, to better characterize and quantify rates of permafrost changes, methods that further clarify the relationship between subsurface biogeochemical processes and microbial dynamics are needed. In this study, we investigated four sites (two well-drained thermokarst mounds, a drained thermokarst lake, and the terrestrial margin of a recently formed thermokarst

SUBMITTER: Smallwood CR 

PROVIDER: S-EPMC11885255 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature