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 32 for “"heterogeneous landscapes"”.
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HUMAN PREDATION RISK AND ELK BEHAVIOR IN HETEROGENEOUS LANDSCAPES
Elk (Cervus elaphus) are increasing in fragmented landscapes that result from exurban human development throughout western North America. This problem is increasing human-wildlife conflicts and represents a significant new challenge to wildlife managers. Elk hunting must be intensively managed, if …
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HUMAN PREDATION RISK AND ELK BEHAVIOR IN HETEROGENEOUS LANDSCAPES
Elk (Cervus elaphus) are increasing in fragmented landscapes that result from exurban human development throughout western North America. This problem is increasing human-wildlife conflicts and represents a significant new challenge to wildlife managers. Elk hunting must be intensively managed, if …
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The Influence of Heterogeneous Landscapes on Banded Mongoose (Mungos mungo) Behavior in Northern Botswana: Inferences about Infectious Disease Transmission
Infectious disease transmission is driven by a complex suite of drivers with behavior and landscape dynamics contributing to epidemics across host-pathogen systems. However, our understanding of the interaction between landscape, behavior, and infectious disease remains limited. In the banded …
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Modelling the structuring of animal communities in heterogeneous landscapes : the role of individual home range formation, foraging movement, competition and habitat configuration
… used to simulate mammal and bird communities in heterogeneous landscapes, and to to better understand their response to landscape changes (habitat loss and fragmentation).
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Embedded Within Landscapes: Agrarian Philosophy and Sustainable Agriculture
… a model for sustainable human habitation within heterogeneous landscapes. Thoreau's Transcendentalism and the historical roots of American Agrarianism are explored as influences for wilderness preservation and the New Agrarian movement. Idealizing a distant wilderness too often means overlooking …
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Forest edges enhance mate-finding in the European gypsy moth, Lymantria dispar
… ability in some species, particularly in heterogeneous landscapes containing low-density populations. This study focuses on the effects of habitat type and edge on mate-finding in an invasive defoliator, the European gypsy moth. Adult European gypsy moth males locate mates by following …
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Range-wide assessment of land use and cover change near Indiana bat hibernacula
… is expected to affect wintering populations. The landscapes surrounding hibernacula not only provide critical roosting and foraging habitat but also support the highly specific microclimates Indiana bats need for successful hibernation. To date, the assumption has been that the greater the amount …
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The effect of soil nutrient availability on resource allocation in tropical tree species
… distributions of tree species across edaphically heterogeneous landscapes. My dissertation evaluates functional variation among tropical trees in nutrient use, and the implications of this functional diversity of tropical forest nutrient and carbon cycling. Through a comparison forest litterfall …
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Why Are Some Watersheds More Sediment-Productive Than Others? An Explainable AI Approach
… targeted sediment mitigation strategies across heterogeneous landscapes.
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The role of landscape structure in determining eco-evolutionary dynamics during environmental change
… patterns of gene flow or spatial selection, landscapes provide a large role in determining populations' responses. Even without landscape structure, populations exhibit large levels of regional structure, and indeed substructure, due to localised interactions. This spatial structure may …
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Navigating in a Rainforest: Movement Patterns in a Neotropical Primate. The Black Howler Monkey
… spatial performance and foraging effort across heterogeneous landscapes. While sophisticated spatial skills are agued to underly flexible and efficient movement patterns, low spatial skills are argued to reflect movement patterns highly conservative and constrained. Here, I investigated …
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Leaf Traits, Neighbors, and Abiotic Factors: Ways That Context Can Mediate the Impact of Invasive Species on Nitrogen Cycling
… the ecosystem impacts of invasive species across heterogeneous landscapes.</p>
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Comparing impacts of new cropping systems on biodiversity in traditional rural China
… high floral biodiversity through multi-scale heterogeneous landscapes containing niches and habitats. Faunal distribution was also significantly affected by village factor nested within soil depth. Different faunal groups responded differently, with Acari being taxonomically diverse and …
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Multi-scale satellite-derived soil moisture modeling across space and time
… the need for increased monitoring efforts in heterogeneous landscapes and explores the development of modular cyberinfrastructure tools for downscaling. ☐ The third study uses machine learning methods to develop a new fine spatial resolution soil moisture dataset, NASMo-TiAM 250 m. The dataset …
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Interactive effects of fire and grazing on soil and forage nitrogen dynamics in a tallgrass prairie
… (N) dynamics and links to forage quality across heterogeneous landscapes remain incompletely resolved. This thesis examined how fire frequency, grazing, and landscape position interact to regulate N cycling, N retention, and plant–soil feedbacks in tallgrass prairie systems. Using long-term …
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Environmental Factors Affecting the Landscape-Scale Spatio-Temporal Distribution of Small Mammal Assemblages Across the Northern Great Plains of North America
… and shrews (small mammals), particularly in heterogeneous landscapes. I used owl pellets as an alternative sampling method, from which the remains of 60,972 individuals were identified and quantified in samples collected across 4.3 million hectares over 15 years. These remains were used to …
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Species Composition and Spatial Ecology of Amazonian Understory Mixed-Species Flocks in a Fragmented Landscape
… in the Amazon basin, it is inevitable that heterogeneous landscapes will play a key role in conservation. These landscapes are mostly composed of patchworks of small forest fragments, secondary forests and roads. Conservation, however must take species interactions into consideration as they …
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Predicting the Repercussions of Anthropogenic Landscape Modifications on the Biota Using Species Focused Adaptable GIS and Spatial Dynamic Models
… variations and patterns of spread in fragmented landscapes and (2) identify and address potential environmental risks associated with land-use planning. The approach consisted in the development of computer-based spatial dynamic models and GIS methods to (1) identify, for an habitat specialist, …
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Biogeochemical effects of an invasive grass across a land-use gradient: linking alterations of nitrogen cycling to depleted soil carbon pools
… of invaded systems will change across spatially heterogeneous landscapes, there is a need to understand the mechanisms underlying the effects of invasive plants and how they may interact with spatially-variable abiotic or biotic factors. I studied the biogeochemical effects of the invasive grass, …
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Effects of canopy cover on the landscape epidemiology of an amphibian chytrid fungus
… prevalence of Bd should vary spatially across landscapes because survival of the pathogen is influenced by environmental variables. In particular, wetland temperatures should vary with forest canopy cover in heterogeneous landscapes. However, few studies have examined the relationship between …
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