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 17 of 17 for “"ecological quality"”.
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The myth of communities. Determining ecological quality of surface waters using macroinvertebrate community patterns.
Contains fulltext : 27553.pdf (Publisher’s version ) (Open Access)
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Modelling water and sediment chemistry in urban canals using chironomid pupal exuviae
… (WFD) classes and develop a method to calculate ecological quality ratios that will support the objectives of the WFD. Calibrated chironomid-based inference models were constructed and these were used successfully to predict water and sediment chemistry parameters. This study found that there was …
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An environmental study of the Lourens River estuary
… biota are generally depauperate. The poor ecological quality of the estuary may be attributed primarily to periodic pollution inputs from the AECI main drain discharge, but also to the complex arrangements of land ownership and administrative controls and the influences of urban, industrial …
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How Urban Nature Shapes Health: Unravelling the Spatial Complexity of Nature-Health Systems
… and contingently shaped by diverse social, ecological, and spatial contexts. Building on these insights, a high-resolution spatial dataset for Greater London (350m grid; 232 indicators) is developed to operationalise spatial complexity analysis. Using this dataset and applying Generalised …
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Analisi degli aspetti di qualità nella gestione dei sistemi di drenaggio urbano attraverso modellazione numerica e indagini di campo
In order to protect river water quality, highly affected in urban areas by continuos as intermittent immissions, it is necessary to adopt measures to intercept and treat these polluted flows. In particular during rain events, river water quality is affected by CSOs activation. Built in order to …
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MULTIFUNCTIONAL EVALUATION AND VALIDATION OF PRACTICES, TOOLS AND INNOVATIVE MODELS FOR THE LANDSCAPE AND AGROECOLOGICAL MANAGEMENT OF AGRICULTURAL SYSTEMS: TRADE-OFFS AND SYNERGIES IN THE ECOSYSTEM SERVICES FRAMEWORK
… is both a consequence and driver of the current ecological crisis. Among rural systems, it is a pivotal driver of agroecosystems vulnerability and lack of resilience. Multi-spectrum solutions are needed, and this is being more and more recognised among all the different levels of agricultural and …
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Vegetation-Based Metrics Of Biotic Integrity For Assessing The Ecological Condition Of Wetlands Of Kentucky
… to halt this dramatic decline and to restore the ecological integrity of waters of the United States. To enforce the Clean Water Act, a number of ecological assessment techniques have been developed to quantify the ecological quality of the waters of the United States. Kentucky recently adopted a …
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La comunità macrozoobentonica come strumento per la valutazione dello stato di qualità ecologico in ambienti di transizione: il caso della laguna di Santa Gilla
… elements are essential tools to evaluate the quality of coastal and transitional ecosystems. In particular, the macrozoobenthic component is often employed in transitional environmental programs (Blanchet et al., 2008). The location analyzed in this study is one of the most important wetlands …
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Outcomes of river rehabilitation on instream hydraulics and fish communities
… anthropogenic pressures of rivers and augment ecological status to meet specific obligations. However, despite the extensive implementation of river rehabilitation programmes little follow up monitoring, and dissemination of results takes place leaving a paucity of information on the outcomes …
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Wetland mitigation banking in the Chicago area: an assessment of ecological outcomes and compliance with performance standards
… have conducted assessments of the regulatory and ecological outcomes of banks in relation to natural wetlands in the Chicago region, which possesses one of the country’s most well-developed banking markets. In Chapter 1, I conducted a review of wetland mitigation policy documents and independent …
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The efficacy of a newly developed method of controlled calcium carbonate introductions for anthropogenic acidification mitigation in a naturally acidic riverine environment
… represents a significant threat to surface water quality and aquatic ecology through flushing induced pH troughs and elevated bioavailable Aluminium (Al) levels. The West Dart River is failing to meet good ecological status established under the Water Framework Directive (2000/60/EC) (WFD) for pH …
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Ecological site quality, site index, and height growth of white spruce stands in the sub-boreal spruce zone of British Columbia
In order to quantify the relationship between ecological site quality and white spruce [Picea glauca (Moench) Voss] height growth, vegetation, soil, foliar nutrient, and stem analysis data were obtained from 102 white spruce-dominated stands across a wide range of sites throughout the Sub-Boreal …
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Ecological and Aesthetic Factors' Preferences of Urban Riparian Corridor in Arid Regions: A Visual Choice Experiment
… people are willing to trade-off unmaintained ecological landscape for aesthetics offered by specific micro and macro environmental factors. Landscape design reflects ecological and aesthetic values, and trade-offs are often made between the two in practice. In arid regions, water …
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Desarrollo de herramientas basadas en angiospermas marinas para la evaluación del estado ecológico de masas de agua del sur de la Península Ibérica
Las praderas de angiospermas marinas son uno de los ecosistemas litorales más importantes del planeta, tanto por las funciones que desempeñan en el ecosistema, como por los servicios ecológicos que repercuten en la población humana. Por su ubicación en la zona litoral las angiospermas marinas están …
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Assessing values for multiple and conflicting uses of freshwater in the Canterbury region
… and what is the related value of improving water quality as this is not always reflected in the market. This study assessed how Canterbury residents value and trade-off multiple attributes of freshwater use by applying Discrete Choice Modelling (DCM) methodology. DCM is a commonly applied …
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Multimetric assessment of freshwater macroinvertebrate communities in Flanders, Belgium
… Union by the end of 2015. To this end, the ecological status of natural surface waters should be assessed, based on a number of biological quality elements which depend on the category of surface water (rivers, lakes, transitional waters or coastal waters). For each of these elements, member …
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Estudi de viabilitat d'un restaurant especialitzat en alimentació saludable : ECOGLUT
Aquest treball és un estudi de viabilitat d'un restaurant especialitzat a menjar saludable anomenat ECOGLUT, on la qualitat és la base del negoci, destacant els aliments sense gluten i ecològics, i en general, una base d'alimentació saludable. Es tracta per tant, d'un restaurant orientat tant a …