CH4diffusive fluxes at the sediment-waterinterface ranged from 0.1 to 22 gC m-2yr-1. CH4
concentrations in the water column ranged from 364.5 to 1,089.5 nmol L-1, indicatingthat this water body is 100 to 300% supersaturated with dissolved CH4(methane saturation in surface waters is ~3 nmol L-1).