Distinct Anaerobic Bacterial Consumers of Cellobiose-Derived Carbon in Boreal Fens with Different CO2/CH4 Production Ratios.

ABSTRACT: Northern peatlands in general have high methane (CH₄) emissions, but individual peatlands show considerable variation as CH₄ sources. Particularly in nutrient-poor peatlands, CH₄ production can be low and exceeded by carbon dioxide (CO₂) production from unresolved anaerobic processes. To clarify the role anaerobic bacterial degraders play in this variation, we compared consumers of cellobiose-derived carbon in two fens differing in nutrient status and the ratio of CO₂ to CH₄ produced. After [¹³C]cellobiose amendment, the mesotrophic fen produced equal amounts of CH₄ and CO₂ The oligotrophic fen had lower CH₄ production but produced 3 to 59 times more CO₂ than CH₄

SUBMITTER: Juottonen H 

PROVIDER: S-EPMC5288814 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature