Effects of sulfate and various inhibitors on the degradation of DMS (A) and MT (B) in anoxic slurries prepared from a minerotrophic ditch in the De Bruuk peatland. Shown are the control (▴), sodium tungstate (4 mM) (▵), BES (⧫), BES plus sodium sulfate (1.5 mM) (◊), an abiotic control that was heated for 1.5 h (70°C) (■), and chloroform (500 μM) (□).