Search Results - "Stephenson, Gladys L"

Comparison of earthworm responses to petroleum hydrocarbon exposure in aged field contaminated soil using traditional ecotoxicity endpoints and 1H NMR-based metabolomics by Whitfield Åslund, Melissa, Stephenson, Gladys L., Simpson, André J., Simpson, Myrna J.

“…1H NMR metabolomics and conventional ecotoxicity endpoints were used to examine the response of earthworms exposed to petroleum hydrocarbons (PHCs) in soil…”
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Quantitative weight of evidence assessment of higher-tier studies on the toxicity and risks of neonicotinoids in honeybees. 2. Imidacloprid by Stephenson, Gladys L, Solomon, Keith R

“…A quantitative weight of evidence (QWoE) methodology was used to assess higher-tier studies on the effects of imidacloprid (IMI) on honeybees. Assessment…”
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Use of nonlinear regression techniques for describing concentration-response relationships of plant species exposed to contaminated site soils by Stephenson, Gladys L., Koper, Nicola, Atkinson, Glenn F., Solomon, Keith R., Scroggins, Richard P.

“…The objectives of this study were to examine the effects of two contaminated site soils on seedling emergence and growth, compare the responses of different…”
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Quantitative weight of evidence assessment of higher-tier studies on the toxicity and risks of neonicotinoid insecticides in honeybees 1: Methods by Solomon, Keith R, Stephenson, Gladys L

“…A quantitative weight of evidence (QWoE) methodology was developed and used to assess many higher-tier studies on the effects of three neonicotinoid…”
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Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 4. Thiamethoxam by Stephenson, Gladys L, Solomon, Keith R

“…A quantitative weight of evidence (QWoE) methodology was used to assess several higher-tier studies on the effects of thiamethoxam (TMX) on honeybees…”
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Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 3. Clothianidin by Solomon, Keith R., Stephenson, Gladys L.

“…A quantitative weight of evidence (QWoE) methodology was used to assess higher tier studies on the effects of clothianidin (CTD) on honeybees. Assessment…”
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Human Exposure Assessment: A Case Study of 8 PAH Contaminated Soils Using in Vitro Digestors and the Juvenile Swine Model by James, Kyle, Peters, Rachel E, Laird, Brian D, Ma, Wai K, Wickstrom, Mark, Stephenson, Gladys L, Siciliano, Steven D

“…In vitro digestors can be used to provide bioaccessibility values to help assess the risk from incidental human ingestion of contaminated soils. It has been…”
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Response to Tennekes (2018) "The Resilience of the Beehive" Journal of Toxicology and Environmental Health B 20: 316-386 by Solomon, Keith R, Stephenson, Gladys L

“…This paper is a response to a letter from Dr. H Tennekes ("The Resilience of the Beehive" Journal of Toxicology and Environmental Health B 20: 316-386). Here…”
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Quantitative weight of evidence assessment of risk to honeybee colonies from use of imidacloprid, clothianidin, and thiamethoxam as seed treatments: a postscript by Solomon, Keith R, Stephenson, Gladys L

“…This paper is a postscript to the four companion papers in this issue of the Journal (Solomon and Stephenson 2017a , 2017b ; Stephenson and Solomon 2017a ,…”
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Comparison of biological and chemical measures of metal bioavailability in field soils: Test of a novel simulated earthworm gut extraction by Smith, Ben A., Greenberg, Bruce, Stephenson, Gladys L.

“…Bioavailability of metals in soil is a major factor influencing estimates of risk associated with exposure of ecological receptors. Metal concentrations in…”
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Direct soil contact values for ecological receptors exposed to weathered petroleum hydrocarbon (PHC) fraction 2 by Angell, Robin A., Kullman, Steve, Shrive, Emma, Stephenson, Gladys L., Tindal, Miles

“…Ecological tier 1 Canada‐wide standards (CWS) for petroleum hydrocarbon (PHC) fraction 2 (F2; >nC10–C16) in soil were derived using ecotoxicological assessment…”
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Toxicity of petroleum hydrocarbon distillates to soil organisms by Cermak, Janet H., Stephenson, Gladys L., Birkholz, Detlef, Wang, Zhendi, Dixon, D. George

“…Canadian standards for petroleum hydrocarbons in soil are based on four distillate ranges (F1, C6–C10; F2, >C10–C16; F3, >C16–C34; and F4, >C34). Concerns have…”
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Bioavailability of Copper and Zinc in Mining Soils by Smith, Ben A., Greenberg, Bruce, Stephenson, Gladys L.

“…The soil-contact exposure pathway can be the main driver of ecological risk assessments. There is currently no standard method to measure bioavailability of…”
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Variability of bioaccessibility results using seventeen different methods on a standard reference material, NIST 2710 by Koch, Iris, Reimer, Kenneth J, Bakker, Martine I, Basta, Nicholas T, Cave, Mark R, Denys, Sébastien, Dodd, Matt, Hale, Beverly A, Irwin, Rob, Lowney, Yvette W, Moore, Margo M, Paquin, Viviane, Rasmussen, Pat E, Repaso-Subang, Theresa, Stephenson, Gladys L, Siciliano, Steven D, Wragg, Joanna, Zagury, Gerald J

“…Bioaccessibility is a measurement of a substance's solubility in the human gastro-intestinal system, and is often used in the risk assessment of soils. The…”
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Uptake and Elimination of Cadmium and Zinc by Eisenia andrei During Exposure to Low Concentrations in Artificial Soil by Smith, Ben A, Egeler, Philipp, Gilberg, Daniel, Hendershot, William, Stephenson, Gladys L

“…Bioaccumulation factors (BAFs) are often used in the risk assessment process to estimate trophic transfer of contaminants such as metals from soil. BAFs can be…”
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Development of a simulated earthworm gut for determining bioaccessible arsenic, copper, and zinc from soil by Ma, Wai K, Smith, Ben A, Stephenson, Gladys L, Siciliano, Steven D

“…Soil physicochemical characteristics and contamination levels alter the bioavailability of metals to terrestrialinvertebrates. Current laboratory-derived…”
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Risk-Based Management of Site Soils Contaminated with a Mixture of Hazardous Substances: Methodological Approach and Case Study by Renoux, Agnès Y, Zajdlik, Barry, Stephenson, Gladys L, Moulins, L. Jacques

“…A novel approach to improve the accuracy and to reduce the uncertainty associated with the assessment of ecotoxicological risks and the determination of…”
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State of the science and the way forward for the ecotoxicological assessment of contaminated land by Kuperman, Roman G.(Edgewood Chemical Biological Center), Checkai, Ronald T.(Edgewood Chemical Biological Center), Garcia, Marcos Vinicius Bastos(Embrapa Amazônia Ocidental), Römbke, Jörg(Universidade de Coimbra IMAR-Coimbra Interdisciplinary Centre Departmento de Zoologia), Stephenson, Gladys L, Sousa, José Paulo(Universidade de Coimbra IMAR-Coimbra Interdisciplinary Centre Departmento de Zoologia)

“…Over the past two decades, soil ecotoxicologists have made strides in utilizing the basic concepts and advancements in soil zoology and ecology. They have…”
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Effects of metal-contaminated forest soils from the Canadian shield to terrestrial organisms by Feisthauer, Natalie C., Stephenson, Gladys L., Princz, Juliska I., Scroggins, Richard P.

“…The effects of elevated metal concentrations in forest soils on terrestrial organisms were investigated by determining the toxicity of six site soils from…”
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State of the science and the way forward for the ecotoxicological assessment of contaminated land Estado da arte e perspectivas da avaliação ecotoxicológica de áreas contaminadas by Roman G. Kuperman, Ronald T. Checkai, Marcos Vinicius Bastos Garcia, Jörg Römbke, Gladys L. Stephenson, José Paulo Sousa

“…Over the past two decades, soil ecotoxicologists have made strides in utilizing the basic concepts and advancements in soil zoology and ecology. They have…”
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