Enrichment of rare methanogenic Archaea shows their important ecological role in natural high-CO₂ terrestrial subsurface environments.

ABSTRACT:

Introduction

Long-term stability of underground CO₂ storage is partially affected by microbial activity but our knowledge of these effects is limited, mainly due to a lack of sites. A consistently high flux of mantle-derived CO₂ makes the Eger Rift in the Czech Republic a natural analogue to underground CO₂ storage. The Eger Rift is a seismically active region and H₂ is produced abiotically during earthquakes, providing energy to indigenous microbial communities.

Methods

To investigate the response of a microbial ecosystem to high levels of CO₂ and H₂, we enriched microorganisms from samples from a 239.5 m long drill core from the Eger Rift. Microbial abundance, diversity and community structure were assessed

SUBMITTER: Jia Z 

PROVIDER: S-EPMC10246774 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature