Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Ecotoxicological assessment"”.
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An Ecotoxicological Assessment of Upper Clinch River Tributaries, Virginia
… River tributaries, Virginia, was assessed via ecotoxicological ratings that indicated the least healthy catchments were associated with mining activity (Dumps, Russell and Coal Creeks). Tributaries were categorized by land use and mining streams were significantly different from agricultural …
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Ecotoxicological assessment of galaxolide and tonalide as contaminants of emerging concern in marine ecosystems
… In order to provide a more complete assessment on marine biota, empirical approach based on data of ecotoxicological assays was explored based on environmental risk assessment (ERA) scheme. In this case, it was intended to employ organisms from different trophic levels like …
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An Ecotoxicological Assessment of a Treated Coal-mining Effluent in the Leading Creek Watershed, Meigs County, Ohio
The majority of research studying the ecological impacts of the coal mining industry on freshwater systems has focused on abandoned-mined land, and the associated acid drainage and metals toxicity. Treated discharges from active mining and preparation facilities, however, can also impair lotic …
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An investigation of genetic heterogeneity in a biological sentinel species (Lumbricus rubellus)
… that could compromise its suitability for ecotoxicological assessment. The species appears to consist of two genetically divergent cryptic lineages and has been demonstrated to display genetic adaptation towards contaminants within some populations.<br/><br/>In order to investigate the …
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Use of an environmentally realistic laboratory test organism and field bioassessments to determine the potential impacts of active coal mining in the Dumps Creek subwatershed on the Clinch River, Virginia
… health. The first objective was to provide an ecotoxicological assessment in the upper Clinch River using standard bioassessment techniques. Analysis of sediments and interstitial water (porewater) indicate higher concentrations of trace metals in samples from sites located above both a power …
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Combined effects of bioavailable organic contaminants in the aquatic environment.
… with bioassay techniques for both chemical and ecotoxicological assessment of complex mixtures of organic contaminants in the aquatic environment. SR-PSDs were deployed for seven to nine weeks in water at various locations within the Ythan catchment (north-east of Scotland), and within the Forth …
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Environmental risk assessment and human pharmaceuticals: limitations and future improvements
… pharmaceuticals require an environmental risk assessment (ERA) prior to market authorisation. The aims for this research were to (1) assess the limitations of the current ERA by comparing crude and refined predicted environmental concentrations (PECs) used in ERAs with measured environmental …