Výsledky vyhledávání - "T W, La Point"

Solid phase microextraction fibers for estimating the toxicity of nitroaromatic compounds

Autor: Jeffery A. Steevens, Alethea T. Bowen, Jason M. Conder, Guilherme R. Lotufo, Philip K. Turner, T. W. La Point

Publikováno v: Aquatic Ecosystem Health & Management. 7:387-397

Solid phase microextraction fibers are useful for investigating bioavailable organic contaminants in complex environmental matrixes such as aquatic sediments. Solid phase microextraction fibers are polymer-coated silica fibers that sorb dissolved org

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6d3abdcacebd3d8a197931fbad1bbe9
https://doi.org/10.1080/14634980490479679

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Assessment of Toxicity Reduction in Wastewater Effluent Flowing Through a Treatment Wetland Using Pimephales promelas , Ceriodaphnia dubia , and Vibrio fischeri

Autor: William T. Waller, Bryan W. Brooks, T. W. La Point, Jon M. Hemming, Philip K. Turner

Publikováno v: Archives of Environmental Contamination and Toxicology. 42:9-16

Effluent toxicity is regularly assessed with Ceriodaphnia dubia short-term chronic and Vibrio fischeri toxicity tests. Condition factor and hemotocrit of fish have recently been used to assess fish health following exposure to xenoestrogens in comple

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e632891bb74686e3a6bc2c82e2e85a92
https://doi.org/10.1007/s002440010285

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Fluoride toxicity to aquatic life: A proposal of safe concentrations for five species of palearctic freshwater invertebrates

Autor: Julio A. Camargo, T. W. La Point

Publikováno v: Archives of Environmental Contamination and Toxicology. 29:159-163

Safe concentrations (SCs) and EC50s of fluoride ion (F-) for five species of aquatic insect larvae, Chimarra marginata, Hydropsyche bulbifera, H. exocellata, H. lobata, and H. pellucidula, are estimated from short-term toxicity bioassays using the mu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8ce85b8c6664b5c763a065b3c1a6e70
https://doi.org/10.1007/bf00212965

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Effects of an herbicide and insecticide mixture in aquatic mesocosms

Autor: T. R. Schwartz, James F. Fairchild, T. W. La Point

Publikováno v: Archives of Environmental Contamination and Toxicology. 27:527-533

The ecological risk of pesticides is estimated from data generated on single chemicals. However, agricultural chemicals frequently occur in the environment as herbicide and insecticide mixtures. This study investigated the effects of an herbicide and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4094bec5abc0c01bb05bb157ccd4521
https://doi.org/10.1007/bf00214845

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Ecological Risk Assessment Procedures for U.S. Army Sites

Autor: D. Ludwig, Michael Simini, Randall S. Wentsel, Ronald T. Checkai, T. W. La Point

This paper discusses U.S. Army guidance procedures for ecological risk assessments (ERA) for risk assessors under contract to the U.S. Army. Using this approach provides the Army with cost-effective, tiered procedures with which to direct and coordin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e92a6cd4884b5af6a15e4b910f8b74dc
https://doi.org/10.1520/stp12242s

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Effects of pH, Aluminum, and Calcium on Survival and Growth of Eggs and Fry of Brook Trout (Salvelinus fontinalis)

Autor: Harold L. Bergman, C. G. Ingersoll, David R Mount, D. D. Gulley, T. W. La Point

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 47:1580-1592

Freshly fertilized eggs, eyed eggs, yolk-sac fry, and swim-up fry of brook trout (Salvelinus fontinalis) were exposed to a matrix of 84 combinations of pH (4.0–6.5), aluminum (0–1000 μg/L), and calcium (0.5–8.0 mg/L) in 21–91-d experiments.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17d890692419c5eaa3dc50e4f3a1ee17
https://doi.org/10.1139/f90-180

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Effects of sublethal copper exposure on behavior and growth of Rana pipiens tadpoles

Autor: M. S. Redick, T. W. La Point

Publikováno v: Bulletin of environmental contamination and toxicology. 72(4)

This research is designed to test how sublethal exposure to copper affects tadpole predator-escape behavior and how quickly tadpoles recover. After exposure, tadpoles were separated. Escape behavior was recorded for two-thirds of exposed tadpoles whi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b42370badc92fed2c17dd4d36944a7e
https://pubmed.ncbi.nlm.nih.gov/15199983

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