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 18 of 18 for “"Biomonitors"”.
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Lichens as biomonitors for atmospheric polycyclic aromatic hydrocarbons
For the first time in Africa, studies investigating the polycyclic aromatic hydrocarbons (PAHs) levels in lichens (species Parmotrema austrosinense (Zalhbr.) Hale) was performed successfully using various sample preparation techniques. Sampling campaigns were conducted at 5 different sites across …
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Phytochelatins--biomonitors for metal stress in terrestrial pants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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Performance of Lichen Species as Air Pollution Biomonitors in the Greater Auckland Urban Area, New Zealand
… high technical skills to operate. Lichens as biomonitors are an effective complementary because they accumulate pollutants in line with atmospheric concentrations. This research assesses the performance of lichens as air pollution biomonitors. The study was conducted in New Zealand, where no …
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Dealing with contaminated land in the ‘New Regime’: an appraisal of the use of plants as biomonitors for metal contamination analysis and risk assessment for a former landfill site in Greenwich
… the study was to evaluate the role of plants as biomonitors for site characterisation and risk assessment purposes and to see if there was any selectivity between metal uptake in leaves and roots. Tree cores were also collected as metals in soil or ground water and may be drawn up via tree roots …
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Bioaccumulation of trace metals in biota (algae and chironomids) from Kenyan saline lakes (Bogoria and Nakuru): evaluation and verification of two compartment toxicokinetic models
… aquatic biota from some Kenyan Saline lakes as biomonitors of trace metals. The use of compartment models as predictive tools in assessment environmental quality was also evaluated. The test organisms (Algae Arthrospira fusiformis and chironomids Lepotochironomous deribae) exhibited organism …
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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 …
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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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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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Spatial, temporal and dendrochronological comparisons of mercury in Ontario deciduous trees
… and the ap- plicability of deciduous trees as biomonitors for Hg. Leaf, bark and wood core samples were taken from a variety of deciduous species including Acer spp. (sugar, silver and red maple), Quercus spp. (red oak), Populus spp. (eastern cottonwood), and Salix spp. (willow) mainly from the …
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Phytoforensics: Applications in vapor intrusion assessment
… Trees are ideal candidates for environmental biomonitors because they are ubiquitous, active samplers of vapor and groundwater and because they are thought to sample over large spatial and temporal scales, effectively averaging variability. Sampling trees is noninvasive and does not require …
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THE RISE OF THE GREEN ALGAE: USING ALGAL PALYNOMORPHS AS PROXIES OF NATURAL EVENTS AND ANTHROPOGENIC ACTIVITIES
… and cyanobacteria, to improve their utility as biomonitors and paleolimnological proxies.
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Magnetism of anthropogenic airborne particulate matter
… Curves (FORCs) to unmix signals from ’passive biomonitors’— leaves. FORC signatures of leaf samples combine aspects of both exhaust residue and brake-pad end-members, suggesting that FORC fingerprints have the potential to identify and quantify the relative contributions from exhaust and …
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Human and environmental health risks associated with eleven metal(loid)s evaluated in topsoil and wild mushrooms sampled from across Leicestershire, UK.
… their bioaccumulation in wild mushrooms, used as biomonitors from parks across Leicestershire, UK. Moreover, the study assessed human, and ecological health risks to metal(loid) exposure from these sources. Topsoil and wild mushroom samples were collected from parks across Leicestershire. The …
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Human impact on the biodiversity of macroinvertebrates in intertidal rocky shores along the Namibian coast
The intertidal rocky shores along the central coast of Namibia provide multiple microhabitats supporting a high species biodiversity and a unique heterogeneous environment. Extreme anthropogenic disturbance such as harvesting and trampling due to human visitors may reduce biodiversity, modifying …
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Epidemiology of suburban deer
… evidence that suburban deer are effective biomonitors for zoonoses. International, federal, and state management agencies collect various harvested wildlife species annually which could be easily accessed for zoonoses sampling. Annual culling of deer continues in Chicago area forest …
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Lichens as a biomonitoring tool for detecting heavy metal air pollution associated with industrial activities in Collie, south-western Australia
… decades, various techniques for using lichens as biomonitors have been developed for monitoring air pollution and forest ecosystem health. Lichens have been used effectively to determine the dispersion of heavy metals emitted by industrial point-sources; however the approach has not been commonly …
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Seabirds as monitors of marine plastic pollution
… at sea, providing support for their use as biomonitors of marine plastic pollution. In Chapter 4, I assess how plastic loads in four petrels have changed from 1987 to 2018 in roughly decadal time periods and years. More than 3 700 regurgitated Brown Skua pellets, each containing the remains …
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A Multi-Scale analysis of organochlorine pesticide contamination in raptor populations: research effort, historical trends, and current concentrations
… Furthermore, the benefits of using raptors as biomonitors of pesticides and other dangerous contaminants has been well documented, particularly in the Global North. Decades of using raptors as sentinels have played a crucial role in shaping international conventions like the Stockholm …