Results 211 to 220 of about 7,330 (253)

Benthic macroinvertebrates of a fluctuating reservoir

Freshwater Biology, 1978
SUMMARY. Benthic macroinvertebrate distribution, abundance, and composition were observed in a fluctuating (7.7 m) central Wisconsin, U.S.A., reservoir during 1973–74. Chironomidae and Oligochaeta represented 98% of the total fauna by number. The chironomid, Chironomus plumosus, and an oligochaete, Limnodrilus, each averaged 36% of the total ...
J. L. KASTER, G. Z. JACOBI
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Freshwater biomonitoring and benthic macroinvertebrates

Choice Reviews Online, 1993
ix,488 hal,;ill,;23 ...
Rosenberg, David M and Vincent H.Resh
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Assessment of the effects of nickel on benthic macroinvertebrates in the field

Environmental Science and Pollution Research, 2013
A field-based evaluation of the biological effects of potential nickel (Ni) exposures was conducted using monitoring data for benthic macroinvertebrates and water chemistry parameters for streams in England and Wales. Observed benthic community metrics were compared to expected community metrics under reference conditions using RIVPACS III+ software ...
Adam, Peters, Peter, Simpson, Graham, Merrington, Chris, Schlekat, Emily, Rogevich-Garman   +4 more
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Effects of Diflubenzuron on Benthic Macroinvertebrates in Littoral Enclosures

Archives of Environmental Contamination and Toxicology, 1996
Two applications of the insect growth regulator diflubenzuron were made to replicate littoral enclosures at nominal concentrations of 0.7, 2.5, 7.0, and 30 &mgr;g/L. Assessment of the effects of this insecticide on benthic macroinvertebrate community structure was accomplished by measuring changes in abundance and taxonomic richness.
, O'Halloran, , Liber, , Schmude, , Corry   +3 more
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Effects of hydro- and thermopeaking on benthic macroinvertebrate drift

Science of The Total Environment, 2016
The operation of storage hydropower plants is commonly linked to frequent fluctuations in discharge and water level (hydropeaking) of downstream river stretches and is often accompanied by cooling or warming of the water body downstream (cold or warm thermopeaking, respectively).
Schülting, Lisa, Feld, Christian K., Graf, Wolfram   +2 more
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Acute bioassays with benthic macroinvertebrates conducted in situ

Bulletin of Environmental Contamination and Toxicology, 1989
Several methods of toxicity testing using macroinvertebrates in controlled laboratory experiments have been reported. Researchers conducted bioassays with natural assemblages of benthic macroinvertebrates exposed to several petroleum refinery effluents. They found that the populations of invertebrates declined after only a few days of exposure.
M, Whaley, R, Garcia, J, Sy
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Effects of Iron on Benthic Macroinvertebrate Communities in the Field

Bulletin of Environmental Contamination and Toxicology, 2011
Matched chemical and ecological monitoring data were used to assess the effects of iron on benthic macroinvertebrate communities. Three measures of iron exposure: dissolved, total, and particulate iron were assessed. Ecological responses were normalised to an unimpacted reference condition to make site-specific predictions of the reference condition ...
Adam, Peters, Mark, Crane, William, Adams   +2 more
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Overwintering of Freshwater Benthic Macroinvertebrates

1991
Although temperature has long been recognized as a key variable in aquatic ecosystems, the consequences of freezing have received relatively little attention. At high elevations and latitudes, ice formation is a major variable affecting differential survival of organisms and hence the abundance and community composition of freshwater organisms. Ice may
Mark W. Oswood, L. Keith Miller, John G. Irons   +2 more
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Responses of stream benthic macroinvertebrates to fire

Forest Ecology and Management, 2003
Synthesis of published research on the responses of stream benthic macroinvertebrates to fire in western United States indicates a consistent pattern of response that can guide resource management and future research. Direct effects of fire generally are minor or indiscernible.
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Bioassays with a Natural Assemblage of Benthic Macroinvertebrates

1977
A new bioassay method for determining the effects of environmental contaminants on populations of benthic macroinvertebrates is described. Colonized Hester-Dendy samplers were transported from a natural stream to artificial streams and exposed to industrial wastewater.
SL Burks, JL Wilhm
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