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 29 for “"human land-use"”.
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Strategic Concessions: Negotiating Human Land Use to Serve the Habitat Needs of the Eastern Meadowlark
… for a variety of species. Encroaching on these landscapes while engaging in habitat fragmentation and destruction, has negatively impacted biodiversity and subsequently put thousands of species at risk of going extinct. With humans causing peril for various species via habitat losses and …
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Impact of human land-use and rainfall variability in tropical dry forests of southwest Madagascar during the late Holocene
… scarcity of palaeoecological studies on the island. Southwest Madagascar is semi-arid and comprises fragmented tropical dry forests where human subsistence strategies are diverse. Therefore, it provides a perfect setting to generate new palaeoecological records and investigate vegetation …
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Land Use Variation on Mid-Columbia Plateau Upland and Lowland Archaeology Sites
… in their environmental settings as evidence of human land use labeled as site types. Land use models consisting of cultural and environmental variables were developed from those studies. Those variables were compared to a sample of archaeological records located in the upland …
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Effects of anthropogenic land use on temperate mangrove forests
… unprecedented challenges due to ever increasing human activities, resulting in increased land-derived stressors that can threaten the health and integrity of these systems. Mangrove forests are unique ecosystems that play a crucial role in filtering nutrients, retaining pollutants, and …
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The Role of Physiography in the Relationships Between Land Cover and Stream Fish Assemblages
Human alteration of the landscape for agricultural and urban land use has been linked to the degradation of streams and stream biota. Natural physical and climatic characteristics, or physiographic template, are important for determining natural land cover and constraining human land use, and are …
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Effects of Landscape Disturbances on Autotrophic Processes Within Arkansas Ozark Streams
<p>Land-use change is one of the most widespread human impacts and can influence abiotic and biotic processes within surrounding streams. For example, streams in agricultural and urban watersheds receive greater light and nutrient inputs that can promote increased algal growth and primary …
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Vertebrate Survey of Rocky Fork Wildlife Management Area, Unicoi and Greene Counties, Tennessee.
<p>The most prominent cause of habitat fragmentation is intensification of human land use. Negative effects of large-scale forest fragmentation have been documented in most vertebrate classes. The inherent problem in <em>directly</em> documenting effects lies in our ignorance of historical …
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Alluvial cycles and early agricultural settlement phases in the Jordan Valley
… were influenced by tectonism, climatic changes, human land use, and natural geomorphic thresholds, sometimes in combination. The stratigraphy and chronology of early agricultural settlements in the valley are summarized, and investigations at a protohistoric agricultural town are described. Major …
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Using GIS and Land Use Data to Select Candidate Reference Sites for Stream Bioassessment
<p>GIS was used to select candidate reference sites in Georgia to characterize the reference condition by sub-ecoregion for a rapid bioassessment of streams statewide. Instead of relying on best professional judgment or previous knowledge of a limited number of sites, we performed an objective …
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The expanding distribution of Ixodes scapularis and associated pathogens in the Chicago, IL, metropolitan area
… with the disease including into urban landscapes. To investigate landscape factors that may influence the colonization of I. scapularis and its associated pathogens in an urban ecosystem, 45 sites were sampled along three transects spanning the urban-to-rural human land use gradient in …
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Age, forest structure, and disturbance history of five potential old-growth forests in eastern Kentucky's Cumberland Plateau
<p>The Cumberland Plateau (CP) is an ecoregion of global importance, yet its extent of old- growth forest (OG) is not well known. Due to its rarity and importance, understanding what OG remains is needed to deduce the region's health. This study described five potential OG forests in eastern …
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Impacts of Habitat, Resource Addition, and Predator Exclusion on Rodent Community Structure and Hantaviruses in the Neotropics
Understanding how climate and human land use change impacts trophic interactions is essential in the face of ongoing biodiversity loss and the continued emergence of RNA viruses and zoonosis. Human land use changes such as agricultural expansion, deforestation, and habitat degradation all have been …
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Post-Glacial Fire History of Horsetail Fen and Human-Environment Interactions in the Teanaway Area of the Eastern Cascades, Washington
Landscapes of the Pacific Northwest have been shaped by dramatic shifts in climate since the last glacial maximum and more recently, by human activity. However, it is unclear how past relationships between people, fire, and climate interacted on the landscape. The purpose of this research was to …
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Weaving through the matrix: investigating the influence of urban land use on weaver bird movements into and out of Cape Town wetlands
Urbanization, a fast growing and destructive human land use, causes local extinctions, biotic homogenization and fragmentation of natural habitats. Understanding how the nature of the urban matrix affects the species residing within a city’s fragmented habitats is an important founding component of …
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Monitoring Global Forest Land-Use and Change
… and provide wood and non-wood products. However, humans are now capable of modifying their environment in ways more impactful and at rates faster than at any other time in history. Consistent and comparable estimates of global forest land-use and change are critical for monitoring human impacts on …
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Habitat Selection and Range Overlap of Moose and White-tailed Deer in the Boreal Plains of Saskatchewan
In the Boreal Plains of western Canada, human land use has created extensive linear features (roads, trails, transmission corridors) linking nodes of disturbance such as forestry cutovers and wildfire burns. These changes, compounded by climate change, are reshaping predator–prey relationships …
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Nutritional condition and stress response of fishes along a gradient of habitat quality in the St. Lawrence River: physiological consequences of anthropogenic habitat degradation
… on riverine systems that flow through disturbed landscapes. These in-stream changes can alter aquatic population size and community structure; however, the underlying causal mechanisms remain poorly understood. Although patterns in population size presumably reflect underlying variation in …
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Temporal trends in stream-fish distributions, and species traits as invasiveness drivers in New River (USA) tributaries
… and geographic regions. Species traits and human activities mediating stream-fish invasions remain poorly understood. In Chapter 3 we modeled the contribution of species traits to invasion success of UMNR tributary fishes during the colonization and spread stages. Biological traits …
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Land use and society during the Middle Bronze Age in South-East Ireland: an integrated examination of the character, landscape setting and chronology of the archaeological and paleoenvironmental record from c.1600–1150 BC
… Extensive excavation of hitherto un-surveyed landscapes as part of large-scale linear development schemes led to the discovery of hundreds of archaeological features dating to the period. The application of wide-scale scientific dating has helped to change how the Irish Middle Bronze Age is …
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