Mercury in lagoons: An overview of the importance of the link between geochemistry and biology

摘要: Abstract Shallow-water lagoons, which are common features along coastlines, important sites for elemental cycling in this environmentally-sensitive terrestrial–marine interface. Factors governing mercury (Hg) these lagoons poorly characterized, but critical to understanding the links between sources and higher trophic levels, that ultimately vectors of human exposure lagoon environments. This article discusses processes controlling fate Hg from various sources, including methylation Hg, demethylation methylmercury, benthic fluxes species three most thoroughly studied worldwide, namely Thau (France), Venice (Italy) Marano Grado (Italy). Although each system experiences differences details how is transformed transported, strongly affected by biogeochemical transformations other elements, especially redox sensitive, microbially elements such as sulphur, iron manganese, their interaction with organic matter. The shallow nature rapid rates mediated matter decomposition result seasonally dynamic influence bioavailability. Despite considerable work date, current dynamics ecosystems, through distribution, MeHg production degradation, transfer, still limited more research needed link all subparts into a general coherent picture.