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 20 of 26 for “"biological indicators"”.
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Biological Indicators of Forest Dieback
This study involved the determinations of the foliar levels of chlorophyll a and b and metal levels in the year 1, year 2 and year 3 needles of Sitka spruce. A survey was made of nineteen sites in the Afan 1 forest in South Wales. The results obtained indicates that there are two distinct types of …
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An analysis of diatoms as biological indicators of water quality in rivers of the Western Cape
… is a resurgence of interest in the use of bio-indicators in monitoring rivers. In this study, diatoms are investigated as an indicator of water quality because of the relative abundance of species and the ease with which they can be collected in the field, and the establishment of taxonomies of …
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The Cape fur seal : monitoring and management in the Benguela Current ecosystem
… (BCLME) Programme’s project "Top Predators as Biological Indicators of Ecosystem Change in the BCLME" (LMR/EAF/03/02). The objectives of this project were to assess the utility of top predators as biological indicators of ecosystem change in the Benguela Current Ecosystem, and implement an …
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The distribution and population dynamics of Corixdae in potentially unstable habitats
… habitats. It appears that they may be utilisedas biological indicators of water quality and for themonitoring of changing water quality in relation to botheutrophication and acidification. (Henrikson and Oscarson1985; Jansson 1987).This supposition is discussed in relation to a number …
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Fixed Crown Prosthetic Treatment in Childhood – Functional Aspects /// Неснемаемо коронково протезиране в детска възраст – функционални аспекти
… childhood, by evaluating the functional medical-biological indicator. It is proposed a methodical sequence for the prosthetic treatment of temporary teeth with ready-made zirconia crowns and crowns, made by CAD/CAM technology of composite material. On the basis of a methodology for logopaedic …
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Qualitative and quantitative analysis of sedimentary characteristic variability in tide-dominated and -influenced deltas
… information such as sedimentary structures, biological indicators, erosional information, grain size distribution, etc., from articles documenting tide-dominated and -influenced deltas. For an article to be included it must directly interpret a tide-dominated or tide-influenced delta, …
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UTTERBACKIA IMBECILLIS (BIVALVIA: UNIONIDAE) AS A BIOLOGICAL INDICATOR OF COPPER POLLUTION
… imbecillis</italic>, is an ideal biological indicator of aquatic ecosystems because of its widespread geographic distribution, abundance, and sedentary, filter-feeding lifestyle. The present study evaluated the physiological responses of <italic>U. imbecillis</italic> to copper. …
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Shape Analysis in Bioinformatics
… control or diseased tissue, therefore providing biological indicators which are vitally important to improve the accuracy of diagnosis. In the second area of research, we test the hypothesis that pesticide toxicity is related to the shape similarity between the pesticide molecule itself and the …
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Monitoring Peatland Damage and Restoration Using Testate Amoebae as Indicator Organisms
… the potential for using testate amoebae as biological indicators of peatland damage and restoration. These aims were achieved through studies at three sites covering a range of damage commonly affecting UK sites. The experiments entailed repeated monitoring of a ditch blocking experiment at …
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Daily stressors and memory failures in a naturalistic setting: Findings from the normative aging study
… typically been examined in the laboratory with biological indicators of stress (i.e., stress hormones) and cognitive tests. These studies have generally found a negative association between stress and cognitive performance; that is, people who have higher levels of stress hormones tend to have …
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Dispersion of seabirds at sea in the Southern Ocean
… The merits of using seabirds at sea as biological indicators of prey resources are discussed.
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Examining coral reef ecosystem dynamics using microorganisms and metabolites
… identified specific microorganisms which were biological indicators of the disease. In Chapter 3, I investigated the dynamics of microorganisms over short temporal tidal and diurnal cycles, as well as spatially across US Virgin Island (USVI) coastal habitats. In these habitats, I found tidal …
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Adequação da metodologia de avaliação ecológica rápida para unidades de conservação marinhas
… (REA) consists of a flexible process to collect biological and ecological data increasingly. Through the integration of multiple levels, of informative data ecological maps that describe flora and fauna, as well as the human activities and the land use are generated. This methodology has shown …
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Assessment of the Efficacy of a Constructed Wetland to Reduce or Remove Wastewater Effluent Estrogenicity and Toxicity Using Biomarkers in Male Fathead Minnows (Pimephales Promelas Rafinesque, 1820)
… promelas models to assess aqueous estrogenicity. Biological indicators used to assess general fish health included hematocrit and condition factors. The estrogenic nature of the effluent was screened, concurrent with fish exposure, with GC/MS analysis for target estrogenic compounds including: …
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Characterizing the Microbiome of Scottish Freshwater Pearl Mussels (Margaritifera margaritifera): A Metabarcoding Analysis using Next-Generation Sequencing
… habitats, functioning as ecosystem engineers, biological indicators, and flagship species. Despite their ecological significance, M. margaritifera populations are undergoing rapid declines, resulting in low reproductive success and limited juvenile recruitment. Addressing research gaps, …
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Examining coral reef ecosystem dynamics using microorganisms and metabolites
… identified specific microorganisms which were biological indicators of the disease. In Chapter 3, I investigated the dynamics of microorganisms over short temporal tidal and diurnal cycles, as well as spatially across US Virgin Island (USVI) coastal habitats. In these habitats, I found tidal …
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The use of traditional weather forecasting by agro-pastoralists of different social groups in Bobirwa sub-district, Botswana
… to another. For instance, local knowledge indicators are used to determine onset of rainfall and quality of the rainfall expected. However, there are numerous factors that may have affected the effective use of and dependence on traditional weather forecasting over the years. For this …
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Environmental and efficacy studies of a chromated fluoride wood preservative
… the groundline region. The results of a microbiological isolation study of 'on-line' poles could not be used to directly corroborate these laboratory and field results as basidiomycetes were infrequently isolated regardless of treatment. However, field pole isolations of the commonly found …
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Thermal spray of a drug delivery system onto femoral orthopaedic implant
… regards to mechanical (implant loosening) and biological (infections) behaviour. It is thought that local drug delivery would be useful to prevent implant failures that could be treated with therapeutic agents (drug/growth factor). It is hypothesised in this work that polymers proven in drug …
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Fish parasites as bio-indicators of heavy metals in two South African embayments
… indices were correlated with the host's biological data and parasite infection data, to determine the parasite community structure and provide insight into the host's community structure. The parasites identified in C. capensis (n=19) include a cestode (Gyrocotyle plana), two monogeneans …
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