Mercury and Methylmercury Concentrations in Water and Largemouth Bass in Maryland Reservoirs
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Mercury speciation in piscivorous fish from mining-impacted reservoirs.
Guadalupe Reservoir (GUA), California, and Lahontan Reservoir (LAH), Nevada, U.S. are both affected either directly or indirectly by the legacy of gold and silver mining in the Sierra Nevada during the nineteenth century. Analysis of total mercury in fish from these lentic systems consistently indicate elevated concentrations (>1 microg x g(-1) wet weight; hereinafter, all concentrations are re...
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A connection between accumulation of methylmercury (MeHg) in wild fish populations and atmospheric mercury deposition has not been made. Large databases for both MeHg in fish and atmospheric mercury deposition have been assimilated from monitoring efforts spanning the contiguous United States. Here, we compare results of these data sets and show that state-wide average concentrations of MeHg in...
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A survey of size-specific mercury (Hg) concentrations in game fish from a subset of Maryland fresh and estuarine waters was conducted, in which Hg concentrations in 112 fish from seven freshwater impoundments and three tidal and four estuarine locations in Chesapeake Bay and its tributaries were measured. Striped bass (Morone saxatilis) was the most intensively examined species. Of the fish exa...
متن کاملMercury distribution in sediments and bioaccumulation by fish in two oregon reservoirs: point-source and nonpoint-source impacted systems.
Mercury pollution was compared in two Oregon reservoirs of similar size and age, located within the same ecoregion. Cottage Grove Reservoir was distinguished by a history of mercury mining and processing within its watershed, while Dorena Reservoir was not. Mercury concentrations in sediments of the reservoirs, tributary streams, and three species of fish were measured. Sediment mercury concent...
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Mercury Concentrations in Muscle Tissue from Sportfish in Lake Mead, Nevada by Joanna L. Kramer Dr. Shawn L. Gerstenberger, Committee Chair Professor, Department of Environmental and Occupational Health School of Community Health Sciences University of Nevada, Las Vegas Lake Mead is the largest reservoir by volume in the United States and provides fishing opportunities for numerous anglers. Con...
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