Global ETD Search
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Showing 1 to 17 of 17 for “"biomonitor"”.
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Crayfish as a biomonitor for the algal toxin microcystin-LR
… to microcystin-LR via electroshocks for use as biomonitors. In the microcystin detection experiment, Procambarus clarkii moved away from microcystin-LR (p < 0.001) while Orconectes rusticus did not respond (p = 0.28). Neither species could be reliably trained to move to the tank’s center when …
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Using wildlife to biomonitor for antimicrobial resistance in the Scottish environment
… the use of freshwater invertebrates as a biomonitoring tool. We utilised invertebrate samples to obtain reference data on the AMR of E. coli present in the freshwater invertebrate gut, across three distinct river catchments. Using the breakpoint plate method, no significant difference in …
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The aquatic macrophyte Vallisneria americana as a biomonitor of site quality in Great Lakes areas of concern.
… of surface area could be used as an effective biomonitor of overall site quality in stressed aquatic ecosystems. The leaf-to-root surface area ratio was determined for samples of V. americana collected from 225 microsites within 12 Areas of Concern (environmentally contaminated areas designated …
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Actiononaias Ligamentina as a Biomonitor in the Green River: An Unique Approach for Analysis of Environmental Impacts
<p>Biomonitoring has become an important component in bioassessment programs. It is used to maintain high water quality standards, and determine contaminant levels and biological affects in areas that have been heavily disturbed. The objectives of this research were 1) to improve and apply certain …
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The development and assessment of an automated biological monitoring system using crayfish locomotor activity to detect toxic stress
In-plant biomonitors, controlled by dedicated microcomputers, may ultimately provide detection of developing toxicity and hazardous spills in industrial effluents rapidly enough to prevent serious damage to receiving waters. A computer automated system was developed to continuously monitor …
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Implementación de indicadores de alerta temprano en programas integrales de estudio de contaminación en ambientes marinos costeros y estuariales
… laboratorio, otras) que la configuran en un buen biomonitor de sistemas costeros, específicamente en las costas del Océano Atlántico Sudoccidental, donde se distribuyen sus poblaciones. En la presente tesis se evaluaron las concentraciones espacio-temporales de metales (Cd, Cu, Zn, Pb, Ni, Mn, Cr, …
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Assessment of air pollution impacts on vegetation in South Africa
Field surveys and biomonitoring network experiments were conducted in selected areas in South Africa to assess possible air pollution damage to vegetation. During field surveys, atmospheric fluoride was identified as an important pollutant that damaged vegetation in residential areas north of Cape …
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Control strategies for the zebra mussel, Dreissena polymorpha, and the Asian clam, Corbicula fluminea: comparative stress responses and nontarget impact
… agent, and the use of the Asian clam as a biomonitor of the control agent. Effects of intermittent (2-4 hr/day) treatments with chlorine or bromine at levels of 0.5 and 1.0 mg/L (total residual oxidant) upon settling of zebra mussel veligers were examined in studies conducted in a field …
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Avaliação do potencial de acumulação de 210Pb pela Tillandsia recurvata L. para fins de biomonitoração da qualidade do ar.
A biomonitoração do ar pode utilizar organismos que têm estreita relação ecofisiológica com a atmosfera e alto grau de acumulação de elementos estáveis e/ou instáveis. Dentro deste tema, as plantas epífitas têm sido amplamente utilizadas como biomonitores, sendo consideradas ferramentas eficientes …
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Uptake of manganese into the exoskeleton of the swimming crab Liocarcinus depurator (L.) in relation to biomonitoring and biosorption
… aims to employ the species in relation to the biomonitoring potential for Mn in the Scottish inshore waters and in UK monitoring programmes by choosing Loch Fyne in the west coast of Scotland as a naturally high Mn area and the Clyde Sea area as the reference area. The ability of the crushed …
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Untersuchungen zur Einsatzmöglichkeit der Dreikantmuschel Dreissena polymorpha als biologischer Filter und Wasserhygienemonitor
… der Einsatz von Dreissena polymorpha auch im Biomonitoring von Legionellaceae möglich ist. Erstmalig wurden in der Elbe und im Abwasser der KA Reichenau E. coli O157:H7 infizierenden Phagen und deren Anteile nachgewiesen. Die Elbe lag mit einem E. coli O157:H7 infizierenden Phagenanteil von …
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Biomonitoramento e ecotoxicologia de metais pesados através de moluscos bivalves em ecossistemas estuarinos
… processos de bioacumulação e biomagnificação. O biomonitoramento é utilizado para avaliação da qualidade ambiental, através do uso de organismos vivos. Diversas espécies de bivalves são utilizadas em programas de biomonitoramento, sendo que no Brasil, ostras do gênero Crassostrea e mexilhões como …
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Bioaccumulation and Toxicokinetics of Polycyclic Aromatic Compounds and Metals in Giant Floater Mussels (Pyganodon grandis) Exposed to a Simulated Diluted Bitumen Spill
… that giant floater mussels could be used to biomonitor PAC contamination following oil spills as PACs accumulated in mussel tissue and were still present following the 16 day depuration phase. The results of this study are the largest, most comprehensive set of toxicokinetic and …
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Dinámica biogeoquímica de nutrientes y metales pesados en ambientes intermareales de la laguna costera Mar Chiquita : potenciales efectos ecotoxicológicos sobre especies claves del ecosistema
… que esta especie puede considerarse un potencial biomonitor para esta laguna costera. El conjunto de los resultados obtenidos durante este trabajo permiten sostener que las actividades antrópicas desarrolladas en la cuenca de drenaje, especialmente las actividades agrícolo-ganaderas, tienen una …
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INTERACTIONS OF ENVIRONMENTAL POLLUTANTS WITH MICROALGAE AND LICHEN: INSIGHTS FROM MULTI-PLATFORM METABOLOMICS
In this thesis, the interactions of environmental pollutants with microalgae and lichens were investigated using multi-platform metabolomics. In chapter 2, differentiated metabolites in microalgae Chlorella vulgaris and Scenedesmus obliquus after exposure to triphenyl phosphate revealed …
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The inorganic pollution of the Franschhoek River : sources and solutions
… Brabejum stellatifolium species were chosen as biomonitors due to their wide spread distribution along the river and their apparent ability to accumulate heavy metals. The sites chosen allowed for comparison of the river quality upstream with that of the river further down stream as it meandered …