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Filter Total Items: 16731

Ecotoxicology Ecotoxicology

No abstract available.
Authors
D. J. Hoffman, Barnett A. Rattner, G.A. Burton, D.R. Lavoie

Occurrence, distribution, and loads of selected pesticides in streams in the Lake Erie-Lake St. Clair basin, 1996–98 Occurrence, distribution, and loads of selected pesticides in streams in the Lake Erie-Lake St. Clair basin, 1996–98

Thirty pesticides or their degradates were detected in 315 samples collected from 10 streams in the Lake Erie-Lake St. Clair Basin between March 1996 and February 1998 as part of the U.S. Geological Survey’s National Water-Quality Assessment (NAWQA) Program. Atrazine was detected in every sample, and deethylatrazine, metolachlor, and simazine were detected in more than 90 percent of all...
Authors
Jeffrey W. Frey

Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds? Do polychlorinated biphenyls contribute to reproduction effects in fish-eating birds?

No abstract available.
Authors
T. W. Custer, Christine M. Custer, R. K. Hines, S. Gutreuter, K. L. Stromborg, P. David Allen, M. J. Melancon

Some considerations on the use of ecological models to predict species' geographic distributions Some considerations on the use of ecological models to predict species' geographic distributions

Peterson (2001) used Genetic Algorithm for Rule-set Prediction (GARP) models to predict distribution patterns from Breeding Bird Survey (BBS) data. Evaluations of these models should consider inherent limitations of BBS data: (1) BBS methods may not sample species and habitats equally; (2) using BBS data for both model development and testing may overlook poor fit of some models; and (3)...
Authors
Bruce G. Peterjohn

Autobiographical notes or fun with field work Autobiographical notes or fun with field work

This paper rather informally tells of miscellaneous events that occurred during field work in Mexico, the Pacific Islands, and Virginia over the course of about 35 years.
Authors
R. B. Clapp

Differences in oxidative stress between young Canada geese and mallards exposed to lead-contaminated sediment Differences in oxidative stress between young Canada geese and mallards exposed to lead-contaminated sediment

Lead (Pb) exposure results in an increase in tissue lipid peroxides and variation in glutathione (GSH) concentrations, which can be related to peroxidative damage of cell membranes in Pb-poisoned animals. Species and individual variation in sensitivity to Pb poisoning among animals may be due to differential resistance to oxidative stress. The effects of oxidative stress caused by Pb...
Authors
R. Mateo, D. J. Hoffman

Changes in the nesting populations of colonial waterbirds in Jamaica Bay Wildlife Refuge, New York, 1974-1998 Changes in the nesting populations of colonial waterbirds in Jamaica Bay Wildlife Refuge, New York, 1974-1998

The Jamaica Bay Wildlife Refuge (JBWR) represents the largest protected area for over 300 species of migratory and resident birds on Long Island (LI), New York, and occupies a key position along the Atlantic flyway. We identified changes in nesting populations for 18 species of colonial waterbirds in JBWR and on LI, during 1974 - 1998, to provide a basis for future wildlife management...
Authors
K. M. Brown, J.L. Tims, R.M. Erwin, M. E. Richmond

Biological treatability and environmental impact of ozonation of spent reactive dyebaths Biological treatability and environmental impact of ozonation of spent reactive dyebaths

The effect of ozonation of spent reactive dyebaths on both subsequent biological wastewater treatment systems and ultimate aquatic toxicity of effluents from the wastewater treatment plant was determined. Actual spent dyebaths from a textile plant were ozonated to remove color. The ozonated and untreated control dyebaths were diluted to produce wastewaters similar in dissolved solids...
Authors
W.S. Perkins, S.E. Law, M. C. Smith, P. V. Winger, P. J. Lasier

Estimating toxic damage to soil ecosystems from soil organic matter profiles Estimating toxic damage to soil ecosystems from soil organic matter profiles

Concentrations of particulate and total organic matter were measured in upper soil profiles at 26 sites as a potential means to identify toxic damage to soil ecosystems. Because soil organic matter plays a role in cycling nutrients, aerating soil, retaining water, and maintaining tilth, a significant reduction in organic matter content in a soil profile is not just evidence of a change...
Authors
W. N. Beyer

The use of forward looking infrared to locate bird carcasses in agricultural areas The use of forward looking infrared to locate bird carcasses in agricultural areas

Helicopter-mounted Forward Looking Infrared has mainly been used for large animal censuses. I examined the use of this instrument in locating bird carcasses in agricultural fields to improve current carcass searching techniques. Mallard (Arias platyrhynchos) and northern bobwhite quail (Colinus virginianus) carcasses were measured with an infrared thermometer immediately following death...
Authors
J.M. Healy
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