Toxic Metals in Aquatic Ecosystems: A Microbiological Perspective
CitationFord, Timothy, and David P. Ryan. 1995. Toxic metals in aquatic ecosystems: A microbiological perspective. Environmental Health Perspectives 103(Suppl 1): 25-28.
AbstractMicrobe-metal interactions in aquatic environments and their exact role in transport and transformations of toxic metals are poorly understood. This paper will briefly review our understanding of these interactions. Ongoing research in Lake Chapala, Mexico, the major water source for the City of Guadalajara, provides an opportunity to study the microbiological aspects of metal-cycling in the water column. Constant resuspension of sediments provides a microbiologically rich aggregate-based system. Data indicate that toxic metals are concentrated on aggregate material and bioaccumulate in the food chain. A provisional model is presented for involvement of microbial aggregates in metal-cycling in Lake Chapala.
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