The Complex Interactions Between Sediment Geochemistry, Methylmercury Production, and Bioaccumulation in Intertidal Estuarine Ecosystems: A Focused Review

被引：6

作者：

Bradford, Molly A. ^{[1
]}

Mallory, Mark L. ^{[1
]}

O'Driscoll, Nelson J. ^{[2
]}

机构：

[1] Acadia Univ, Biol Dept, Wolfville, NS, Canada

[2] Acadia Univ, Earth & Environm Sci Dept, Wolfville, NS, Canada

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2023年 / 110卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Methylmercury; Coastal; Bioaccumulation; Sulfate; Dissolved organic matter; Food webs; DISSOLVED ORGANIC-MATTER; SULFATE-REDUCING BACTERIA; MERCURY METHYLATION; FEEDING ECOLOGY; BIOAVAILABILITY; SALINITY; CARBON; DEMETHYLATION; LAKE; SPECIATION;

D O I：

10.1007/s00128-022-03653-w

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Due to their natural geochemistry, intertidal estuarine ecosystems are vulnerable to bioaccumulation of methylmercury (MeHg), a neurotoxin that readily bioaccumulates in organisms. Determining MeHg concentrations in intertidal invertebrates at the base of the food web is crucial in determining MeHg exposure in higher trophic level organisms like fish and birds. The processes that govern the production of MeHg in coastal ecosystems are influenced by many geochemical factors including sulfur species, organic matter, and salinity. The interactions of these factors with mercury are complex, and a wide variety of results have been reported in the literature. This paper reviews conceptual models to better clarify the various geochemical and physical factors that impact MeHg production and bioavailability in intertidal ecosystems.

引用

页数：10