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 25 for “"Animal Communities"”.
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Sociable weaver nests as a resource to local animal communities
Animal space use in a landscape generally depends on resources. Facilitation by other species may impact resource availability that can positively influence local species diversity and community structure. Species that significantly change resource availability are often termed ecosystem engineers. …
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Interspecific information transfer as a mechanism of facilitation in animal communities
Tesis doctoral con mención internacional
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Bottom-up effects of aboveground biota, invasive species and drought on soil animal communities
… thesis investigates the response of soil animal communities to disturbances, focusing on perturbations originating above-ground and exerting their primary impact on the resources entering the system, with reverberating effects throughout the soil decomposer food web (bottom-up …
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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
… aims at a better mechanistic understanding of animal communities. Therefore, an allometry- and individual-based model has been developed which was used to simulate mammal and bird communities in heterogeneous landscapes, and to to better understand their response to landscape changes (habitat …
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Evolutionary Ecology of the First Animal Ecosystems
… of Newfoundland, Canada preserve entire early animal communities in situ under volcanic ash. These communities lie at a key juncture between the preceding microbe-dominated world of the Proterozoic, and the subsequent animal-dominated world that we inhabit today. Understanding the composition …
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The interaction of Sika deer (Cervus nippon Temminck 1838) with lowland heath mosaics.
… lowland heath and their impacts on its plant and animal communities. The aim of this thesis was to investigate the ecological interaction of Sika deer with lowland heath set in a mosaic of other habitats. Specifically, the main three objectives of this thesis were: i) to investigate the different …
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Ecological Assembly of Leaf-Litter Anuran Communities Across a Neotropical Land-Bridge Archipelago
… space of richness and composition of biological communities has intrigued ecologists for decades. In this dissertation, I explore the patterns and ecological mechanisms that underlie the community assembly of leaf-litter anurans on a Neotropical archipelago. I combined experimental and …
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Seed predation along an elevational gradient in the Tropical Andes, Peru
… impact. Post-dispersal seed predation is a plant animal interaction that affects the population dynamics, community structure, and diversity of plant species through time and space. This thesis presents a comparative seed predation study of 24 species of tropical trees across a 2.5 km elevation …
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Spatial distribution of anuran assemblages from Caxiuanã, Brazil : testing the riverine barrier hypothesis and the influence of life-history traits
… In the Amazon basin, the spatial structure of animal communities has often been explained by the riverine barrier hypothesis, which assumes that large rivers act as main ecological drivers of diversification. However, life-histories, functional traits and environmental factors other than rivers …
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RIVER HOUSE
… I hope to help people understand the human and animal communities that give definition to this desert on the hottest wavering days of summer and the flattest cold days of winter. This is a long look beyond the white plastic fences around a single horse and giant house that characterize the …
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RIVER HOUSE
… I hope to help people understand the human and animal communities that give definition to this desert on the hottest wavering days of summer and the flattest cold days of winter. This is a long look beyond the white plastic fences around a single horse and giant house that characterize the …
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'Do non-human animals have some form of moral sense which informs the way that they live and act towards members of their own and other species?'
… accounts suggest that certain non-human animals behave in ways that would be considered to be moral, even exemplary, if they were human beings. While some philosophers such as Mark Rowlands consider that some animals may be moral subjects (but not full moral agents), others (after …
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Effects of Organic and Conventional Agricultural Practices on Soil Microbial Communities and Molecular Detection of Soil Borne Disease
<p>Agricultural practices affect soil microbial communities and health through the input of pesticides, herbicides, fertilizers, and cycling of crop rotation. By examining the microbial community structure, we analyzed how microbial species respond to the environment that individual farms create. …
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Four-Toed Salamander (hemidactylium Scutatum) Nest Site Characteristics In Natural And Constructed Wetlands In Eastern Kentucky
… functionally replace natural wetlands. Plant and animal communities and wetland drying cycles often differ between natural and constructed wetlands. It is important to understand what specific habitat characteristics differ between natural and constructed wetlands and what impact these differences …
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Do we have a duty to prevent predation in the wild?
The animal ethics literature has focused a great deal on the harms that culpable moral agents cause animals, and our duties to prevent this. What is less clear is whether there is a duty to stop nonhuman animals from harming other creatures, considering that they lack moral agency. In this …
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The Interaction of Arvicoline Rodents and Sheep in Norwegian Alpine Rangeland
… the potential effect on vegetation and native animal communities. Intensive grazing by large mammals can have significant impacts on plant community composition, species diversity, and nutrient cycling and may also affect densities of small mammals. I used a set of experimental treatments to …
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