Organic matter lability modifies the vertical structure of methane-related microbial communities in lake sediments.

ABSTRACT: Eutrophication increases the input of labile, algae-derived, organic matter (OM) into lake sediments. This potentially increases methane (CH₄) emissions from sediment to water through increased methane production rates and decreased methane oxidation efficiency in sediments. However, the effect of OM lability on the structure of methane oxidizing (methanotrophic) and methane producing (methanogenic) microbial communities in lake sediments is still understudied. We studied the vertical profiles of the sediment and porewater geochemistry and the microbial communities (16S rRNA gene amplicon sequencing) at five profundal stations of an oligo-mesotrophic, boreal lake (Lake Pääjärvi, Finland), varying in surface sediment OM sources (assessed via sediment C:N ratio). Porewater profile

SUBMITTER: Rissanen AJ 

PROVIDER: S-EPMC10581051 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature