Journal ArticleDOI
Acute toxicity of aqueous copper, cadmium, and zinc to the mayfly Rhithrogena hageni.
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TLDR
The average daily moulting rate of survivors significantly decreased after exposure to waterborne copper, cadmium, and zinc in solution, and the average daily survival rate also significantly decreased.Abstract:
Heptageniid mayfly nymphs have been suggested as sensitive indicators of metal contamination in streams based on biomonitoring studies, experimentation in situ, and experimentation in microcosm. Laboratory tests were conducted to evaluate the sensitivity of Rhithrogena hageni, a heptageniid mayfly, to waterborne copper, cadmium, and zinc. Tests were conducted with soft water (hardness = 40–50 mg/L) at about 12°C. Toxicity endpoints were survival and moulting (%/day). Median 96 hr lethal concentrations were 0.137, 10.5, and 50.5 mg/L for copper, cadmium and zinc, respectively. The average daily moulting rate of survivors significantly decreased after exposure to these metals in solution.read more
Citations
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The Impairment of River Systems by Metal Mine Contamination: A Review Including Remediation Options
TL;DR: In this article, a review of the impacts of deep metal mine water discharges on riverine sedimentology, hydrology, and ecology is presented, along with strategies for the restoration of rivers draining historically abandoned metal mines.
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Patterns of Ephemeroptera taxa loss in Appalachian headwater streams (Kentucky, USA)
TL;DR: In this article, the authors evaluated headwater mayfly assemblages with respect to regional landuse disturbances (coal mining and residential) in eastern Kentucky, USA, and found that expected mayfly communities are disappearing from streams where mining disturbance and residential development has occurred and because of the long-term impacts incurred by both landuses, recovery is uncertain.
Journal ArticleDOI
Acute toxicity of cadmium, lead, zinc, and their mixtures to stream‐resident fish and invertebrates
TL;DR: In metal mixtures, the toxicities of the three metals were less than additive on a concentration‐addition basis, and with swim‐up trout fry, a pattern of decreasing resistance with increasing fish size was observed.
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Responses of aquatic insects to Cu and Zn in stream microcosms: understanding differences between single species tests and field responses.
TL;DR: Evidence based on community-level microcosm experiments is provided to support the hypothesis that some aquatic insects are highly sensitive to metals and suggest that water quality criteria for Zn were protective of most aquatic insects, whereas Cu was highly toxic to some species at concentrations near waterquality criteria.
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The sensitivity of aquatic insects to divalent metals: a comparative analysis of laboratory and field data.
TL;DR: It appears that aquatic insects are indeed relatively insensitive to acute metal exposures, but it is suggested that some aquatic insect taxa may be quite sensitive to chronic metal exposure and in some cases may not be protected by existing water quality criteria for metals.
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
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TL;DR: This key has been reproduced from brigham, brigham and book review, factors associated with bluegill nest site selection, and the techniques of water-resources investigations of the united introduction to insects filesmpusblogs.
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An Introduction to the Aquatic Insects of North America
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Trimmed Spearman-Karber Method for Estimating Median Lethal Concentrations in Toxicity Bioassays
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A test for differences between treatment means when several dose levels are compared with a zero dose control.
TL;DR: In this paper, the authors consider the case of a single quantitative variate and assume that the response, if any, of the variate to the substance is a change in the mean.