Biotic Hg methylation occur in mangroves but which microorganisms are involved?
Inhibition of sulfate-reducing bacteria and prokaryotes reduced MeHg formation and SRR.
Inhibition of methanogens either reduced or increased methylation in different sites.
Iron amendment stimulated Hg methylation in low and inhibited in high concentrations.
SRB are important Hg methylators but other groups (IRB, methanogens) may be involved.