Review on mercury transformations and trophic transfer in upland forest ecosystems

Mercury (Hg), a global pollutant of widespread concern, poses significant threats to environmental and ecological health. Upland ecosystems are critical in the global Hg cycle, serving as major long-term sinks for atmospheric Hg, largely through vegetation mediated dry deposition. Despite this importance, substantial knowledge gaps remain on the global distribution patterns of Hg, particularly its more neurotoxic organic form, methylmercury (MeHg), in upland soils and the mechanisms governing it