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

被引：0

作者：

Molly A. Bradford

Mark L. Mallory

Nelson J. O’Driscoll

机构：

[1] Acadia University,Biology Department

[2] Acadia University,Earth and Environmental Science Department

来源：

Bulletin of Environmental Contamination and Toxicology | 2023年 / 110卷

关键词：

Methylmercury; Coastal; Bioaccumulation; Sulfate; Dissolved organic matter; Food webs;

D O I：

暂无

中图分类号：

学科分类号：

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.

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