Archaeal and bacterial communities across a chronosequence of drained lake basins in Arctic Alaska.

ABSTRACT: We examined patterns in soil microbial community composition across a successional gradient of drained lake basins in the Arctic Coastal Plain. Analysis of 16S rRNA gene sequences revealed that methanogens closely related to Candidatus 'Methanoflorens stordalenmirensis' were the dominant archaea, comprising >50% of the total archaea at most sites, with particularly high levels in the oldest basins and in the top 57 cm of soil (active and transition layers). Bacterial community composition was more diverse, with lineages from OP11, Actinobacteria, Bacteroidetes, and Proteobacteria found in high relative abundance across all sites. Notably, microbial composition appeared to converge in the active layer, but transition and permafrost layer communities across the sites were significantly diffe

SUBMITTER: Kao-Kniffin J 

PROVIDER: S-EPMC4683534 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature