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.
Results
Showing 1 to 20 of 23 for “"Ecosystem degradation"”.
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Exploring the Meaning of Smallholder Lifestyle in Gabriola, BC: Land Food People Triangle
… by human activities, including climate change, ecosystem degradation, and the food crisis, poses significant challenges. Unsustainable food practices are major contributors to this ecological crisis. The smallholder lifestyle, central to regenerative alternative food systems, offers effective …
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Parque Cuiá: o ponto de vista de um geógrafo para a construção de um plano de manejo.
… urban growing, the impacts on nature and ecosystem degradation encreases, reducing opportunity for interaction between man and nature. The national policy of creating protected areas and specifically the construction of urban parks is extremely important for the conservation and …
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Comparative Legal Frameworks for Payments for Ecosystem Services
In recent decades, the concept of ecosystem services has deepened our appreciation of the myriad benefits provided by ecosystems, and the risks to human societies posed by ecosystem degradation. There is a growing realisation that problems traditionally considered to be outside the environmental …
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National forests are (not) parks : managing amenity migration to America's national forests
… on USNF that increase risks of wildfire, ecosystem degradation, habitat destruction, and infrastructure damage. This thesis investigates (1) how amenity migration impacts USNF land managers and (2) what strategies can capture the values of USNF to support forest management. I answer these …
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The Hillslope Hydrology of a Mountain Pasture: The Influence of Subsurface Flow on Nitrate and Ammonium Transport
… as nitrate and ammonium, often enter aquatic ecosystems through surface and subsurface hydrological transport that drain agricultural watersheds. The over-abundance of nitrogen within these watersheds is easily transported to receiving stream and rivers, and result in aquatic ecosystem …
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Mapping and assessing ecosystem threat status of South African kelp forests
… and economic role through their provision of ecosystem services. South African kelp forests are no exception and recent studies have established their value. To maintain these benefits, informed management is needed. An understanding of kelp forest distribution, ecosystem functioning, …
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Toward circular and sustainable nitrogen (N) management in the US and globally
… pollution, greenhouse gas (GHG) emissions, and ecosystem degradation, undermining food-energy-water (FEW) sustainability. Despite substantial efforts to improve farm-level nutrient management, persistent nutrient pollution indicates that N management challenges extend beyond individual farms and …
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Digital technologies and environmental change : examining the influence of social practices and public policies
… takes the form of carbon dioxide emissions, ecosystem degradation, and resource depletion, each of which occur to varying degrees throughout the production, use, and end-of-life processing of digital technologies. In the past two decades, multidisciplinary researchers and practitioners have …
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TREE PLANTING STRATEGIES AS NATURE-BASED SOLUTION FOR THE PROVISION OF ECOSYSTEM SERVICES
Abstract Climate change, biodiversity loss, ecosystem degradation, and rapid urbanization are intensifying environmental pressures worldwide, with growing impacts on ecological integrity and human well-being. In this context, Nature-based Solutions (NBS), and particularly tree-based interventions …
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Ecologically-focused calibration of hydrological models for environmental flow applications
… urbanization is a common cause of aquatic ecosystem degradation. Developing environmental flow criteria for managing the effects of urbanization and other human influences requires quantitative flow-ecology relationships that link biological responses to streamflow alteration. To the extent …
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Investigating tagasastes' potential for agricultural climate mitigation and adaptation within the context of South Africa
… use change, exerting negative impacts on the ecosystem services on which agriculture relies. Given their dependence on ecosystem services, rural communities are especially vulnerable to the effects of climate change and the associated socioeconomic implications. Agricultural strategies are …
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Effects of land-use change on benthic macroinvertebrates in the upper reaches of the Apies-Pienaar catchment
… catchment areas is a major cause of freshwater ecosystem degradation worldwide. As catchments become more developed and river ecosystems become increasingly engulfed in various land use activities, there is a growing need to understand these impacts on freshwater ecosystems. Benthic …
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Hetero-functional Graph Theory for Convergent Systems of Systems: Model-Based Applications in Watershed and Economic Systems
… Addressing issues such as water scarcity, ecosystem degradation, or food security requires understanding the coupled systems that shape them, including hydrology, infrastructure, ecology, economics, and governance. While modelers within each discipline develop increasingly accurate …
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Denitrification response to nutrient enrichment in New Zealand estuaries
… in estuarine sediments represent important ecosystem functions regenerating nutrients for primary producers, and regulating the ability to remove excess terrestrially derived nitrogen. Denitrification therefore offers resilience to estuaries through mitigating eutrophication. Biodiversity …
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Machine Learning Approaches to Assessing Future Flood & Storm Risk
… where human activity has resulted in severe ecosystem degradation. If flooding is of concern then so too should be extreme phenomena that result in the causal precipitative events; and thus our attention turns toward the application of machine learning to storm prediction. Our experimental …
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The human dimensions of restoring degraded forests and lands : case of Cameroon
Forest and land degradation are persistent and are perceived as global problems whose impacts are felt at multiple levels in terms of food insecurity, livelihoods, and biodiversity loss. In response, efforts to restore degraded forests and lands is gaining momentum at the global and regional levels …
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Hydroecological connectivity as a normative framework for aquatic ecosystem regulation: lessons from the USA
… slowing the global rate of biodiversity loss and ecosystem degradation. A major factor in this lack of effectiveness has been, perhaps, too narrow a focus on individual elements that exist within ecosystems, rather than on the health of the ecosystems themselves. Additionally, very little …
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Restoring freshwater quality: an integrated environmental, economic and ecosystem services assessment of reducing nutrient loads to Lake Rotorua
… of lakes is impacted by complex relationships of ecosystem responses to management actions, economic constraints, societal pressures and policy contexts. Research in this thesis was aimed at an integrated assessment covering these aspects to inform future lake restoration action. The overarching …
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Carbon storage and preservation in seagrass meadows
… meadows and the reduction in stores after ecosystem degradation; the rates of OC accumulation; the roles of species composition and the depositional nature of the habitat as factors affecting OC storage; and, characterised the sedimentary organic matter (OM) accumulated over millennia using …
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Impact of climate variability and human activities on water resources.
… human activities are significant contributors to ecosystem degradation and the availability of a basin's water resources. Climate change forecasts for the Mediterranean region this century reveal that rising temperatures, combined with less precipitation, have resulted in a 20% drop in water …
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