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 63 for “"Ecological impact"”.
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An evaluation of ecological impact assessment in England
Ecological impact assessment (EcIA) has historically been poorly performed, resulting in poor quality EcIA chapters. No research has been conducted to identify whether poor quality EcIA chapters result in poor quality mitigation and therefore potential net loss of biodiversity. A review of 112 EcIA …
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Ecological Impact of Glaze Storm Damage in an Appalachian Oak Forest
Glaze damage to canopy trees, gap size and seedling regeneration was surveyed relating to site topographic features after a major glaze storm at Fishburn Forest in the central Appalachian mountain region. The survey sites were stratified according to aspect and landform, and sample plots were …
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Ecotourism and its ecological impact: A study of tourist developments in the Mara
… perceived by many as a solution to the negative impacts of "traditional" wildlife tourism and thus a way to achieve ecologicalsustainability within the industry. To date however, there has been no attempt to qualifyand quantify any possible wildlife impacts of ecotourism - the basis of this …
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Wilderness Education Association certification and safety, ecological impact, and curriculum standardization of graduates
… the effects of their certification on safety, ecological impact, and curriculum standardization of their subsequent leadership activities. Self-reports showed a slight, but not statistically significant, decrease in the number of post- W.E.A. course evacuations and rescues. Graduates reported a …
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Ecological Impact of Epigeal Termitaria on Vertebrates in the Tsavo Region of Southeast Kenya
Termites ecologically engineer their environment by producing termitaria (mounds) used by many other species as dens, lookouts or food sources. The role of termite mounds in biological communities is relatively unknown, despite their ubiquitous nature. I investigated their impact on vertebrates in …
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Ecological impact of entomopathogenic nematodes used to control the large pine weevil, Hylobius abietis (Coleoptera: Curculionidae)
… for contributing towards a reduction in the ecological impact of pest insect control, they must also be investigated for any potentially damaging effects they may have in whichever context they are being employed. Entomopathogenic nematodes (EPN; Steinernema carpocapsae and Heterorhabditis …
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The role of penguins in the Recycling of Trace Metals in Antarctica and their Ecological Impact
… Ocean ecosystem is crucial for elucidating the ecological functioning of this region. In this context, biological recycling is considered a key mechanism for the retention and supply of Trace Metals in surface waters. Through this process, marine organisms contribute to the nutrient pool that …
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The Wandering Mussels: Analyzing the Ecological Impact of Dreissenid Mollusks Across Spatial and Temporal Scales in Eastern Ontario Using Environmental DNA
… biological invasions as a form of ecological succession arrested by continued ecosystem disturbance, and the dynamics of invasive species interactions as phase and density dependent. I apply ASH to investigate the ecological consequences of dreissenid mussel invasions using …
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Moms on a mission : a case study exploring the socio-ecological impact of a pre-trial intervention program on participant self agency.
… this single case study was to employ the socio-ecological system framework (Bronfenbrenner, 1992) to investigate how the ReMerge program impacts the sense of agency of mothers involved in the justice system at each layer of her socio-ecological system. This qualitative case study examined how …
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Sustainable design approach underpinned with Life Cycle Impact Assessment(LCIA) and ontology
… to design and to optimise product considering ecological impact is to be developed by this research. After review and comparison of popular LCIA methods and tools, the three-tier sustainable design approach considering human labour ecological impact is developed. Design optimisation with …
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Vegetation Response After Invasive Tamarix Spp. Removal in the Riparian Zone and Semi-Arid Rangeland Ecosystems
… to answer the controversial questions about the ecological impact of <em>Tamarix</em> removal, including testing the prediction that removal of<em> Tamarix</em> will increase native cover, and that an increase in the cover and diversity of desirable species will also prevent secondary invasion of …
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Toward a More Integrative Approach to Quantifying the Ecological Impacts of Invasive Plants
… In response, identification of invasive plant impacts are one of the top most studied aspects of plant invasions. Yet we still know very little about invasive plant impacts, and many land managers remove invasive plants not because of known negative impacts, but because of the general negative …
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Feral oilseed rape populations within a scottish landscape : Implications for GM coexistence and environmental risk assessment
… charlock were compared to gauge the potential ecological impact of ferality. Ferals did not appear to compete with charlock but provided an additional host for those invertebrate species already living on charlock. They also had the potential to function as a bridge for crop pests between …
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From Garbage to Gardens: Urban Agriculture in Mexico City
… the nutritional, economic, physical and ecological impact urban agriculture has had on participants; and observe the impact community urban gardens have on the surrounding community (multipliers). Many governments, including Mexico City's, are introducing institutional and other policy …
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The ecological role of beavers (Castor canadensis) in a Southwestern desert stream
The ecological impact of beavers on a stream in the southwestern United States was investigated to determine if beavers have impact on community and ecosystem level processes in a manner similar to what has been documented in more mesic regions. Specifically, my goals were to determine: (1) whether …
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Breakwater Enhancement: Redesign Tetrapod Structures for Resilient Coastal Environments and Marine Ecosystem Rehabilitation
… is to transform them into a more sustainable and ecologically friendly coastal protection solution. Through mitigating carbon emissions, enhancing mobility, and reducing ecological impact, the proposed optimizations aim to make tetrapod structures a powerful force for protecting coastlines and …
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Ethical consumption and Iceland: A review of current literature and an exploratory study
The ecological impact of society depends largely on consumer activities. All the phases of consumption - production, delivery, purchase, use and disposal of products – have repercussions on the environment, as well as on the larger society. For this reason sustainable production and consumption are …
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Incorporating ecological considerations into industrial design practice
… products contribute significantly to society’s ecological impact, which needs to be lowered. This thesis examines the role of industrial design practice in developing consumer products with low(er) ecological impacts by (i) expanding the concept of ecodesign and (ii) collecting evidence on its …
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Path planning of agricultural UAVs for combined coverage and spot spraying application
… reduce operational time, chemical usage, and ecological impact. The algorithm demonstrates that the integrated path planning methodology achieves less than 1.5 times the optimal route. Simulation and field datasets show a significant reduction in non-target spraying while maintaining weed …
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