Journal ArticleDOI
Response of lake sediments to changes in trace metal emission from the smelters at Sudbury, Ontario.
Jerome O. Nriagu,S. S. Rao +1 more
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The study emphasises the need for curtailing the emissions of acidic and acidifying substances as a critical step in reducing lake acidification as well as in rehabilitating many of the afflicted lakes.About:
This article is published in Environmental Pollution.The article was published on 1987-01-01. It has received 23 citations till now. The article focuses on the topics: Trace metal.read more
Citations
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Partitioning of zinc between the water column and the oxic sediments in lakes
TL;DR: In this article, the authors measured zinc concentrations in oxic sediments and in the associated interstitial and overlying waters (vertical profiles) at 40 littoral stations of various lakes.
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Ecosystem recovery after emission reductions: Sudbury, Canada
TL;DR: A case history of the ecosystem changes that accompanied the nearly 90% reduction of SO2 and metal particulate emissions from Sudbury smelters during the past 25 years is presented in this article.
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Identifying cause in sediment assessments: Bioavailability and the Sediment Quality Triad
TL;DR: Toxicity in Hyalella caged above the sediments was equivalent to that of animals exposed directly in sediment, demonstrating that effects were due to dissolved metal and not metals in the solid phase.
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Effects of emission reductions from the Sudbury smelters on the recovery of acid- and metal-damaged lakes
TL;DR: In the Sudbury area around Sudbury, Ontario, Canada, a large number of metal smelter emissions were reduced in the 1970s and 1980s, and evidence began to emerge of improvements in lake water quality, and some recovery of biological communities.
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Journal ArticleDOI
Evaluation of extraction techniques for the determination of metals in aquatic sediments
Haig Agemian,Alfred S Y Chau +1 more
TL;DR: In this article, a brief study was made of the extractability of a large number of metals from sediments, using different extraction techniques, including acid-extractable and cold extractable methods.
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Acidification of the La Cloche Mountain Lakes, Ontario, and Resulting Fish Mortalities
TL;DR: The loss of populations of lake trout, herring, white suckers, and other fishes in Lumsden Lake was attributed to increasing levels of acidity within the lake, and an absence of fishes was also observed in nearby lakes.
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Acidification of lakes in Canada by acid precipitation and the resulting effects on fishes
TL;DR: In the Sudbury region of Ontario, Canada, fallout of sulfur oxides has been shown to be responsible for damage to vegetation, lakes and fishes as mentioned in this paper, which is the case in many parts of the world.
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Relative Importance of Anthropogenic versus Natural Sources of Acidity in Lakes and Streams of Central Ontario
Bruce D. LaZerte,Peter J. Dillon +1 more
TL;DR: It is shown that for a typical acidified catchment in central Ontario the first hypothesis is not important during periods of high discharge or on an annual basis, and any acidity generated via the second mechanism can be reduced by reducing the emission of salts.
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Trace metal deposition and mobility in the sediments of two lakes near Sudbury, Ontario
TL;DR: The accumulation and mobility of Fe, Mn, Al, Cu, Ni and Pb in the sediments of two lakes (Clearwater, pH 4.5; and McFarlane, pH 7.5) near Sudbury, Ontario have been investigated as discussed by the authors.