Abstract
The Amazonian floodplains are responsible for ~8% of the global methane (CH¿) emissions. CH¿ fluxes in these environments are primarily determined by the balance between its production and oxidation. This balance, in turn, is intrinsically linked to the activity of anaerobic archaea that produce the gas (methanogenic) and microorganisms that consume it (methanotrophic). The community stru…