The methane cycle in tropical Lake Matano: Methanogenesis, methane accumulation, and anaerobic methane oxidation (original) (raw)

6.1 Abstract Organic carbon is oxidized by microorganisms that use a series of terminal electron acceptors defined by free energy yield and availability. Methanogenesis by highly specialized Archea occurs once the availability of these electron acceptors is diminished beyond a thermodynamic threshold which renders the energy yield to low to sustain microbial respiration. In the deep waters of the persistently stratified and Fe-rich Lake Matano, Indonesia, authigenic organic matter is largely degraded through ...