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 107 for “"natural habitat"”.
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Music, Video and Perception: An investigation into shaping attitudes toward fish and their natural habitat
… consisted of seven different categories (i.e., naturalistic, moralistic, ecologistic, or humanistic, dominionistic, utilitarian, or negativistic). A 3 (Music) x 2 (Video) multivariate analysis of variance revealed a significant effect of video presentation on the combined dependent measure; an …
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The etiology of the decline of eastern white pine (Pinus strobus L.) on Virginia landscapes: a survey of stress factors
… two groups for analysis, one called the “decline habitat” and the other the “natural habitat”. Natural habitat observations consisted of trees from a site in the Jefferson National Forest (VA) and decline habitat observations consisted of trees from mostly western Virginia landscapes. After …
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The effects of wildflower plots and diverse landscapes on ecosystem services, bee communities, and on-farm tick abundance
Conservation of natural habitats and planting wildflower plots are two commonly promoted tactics to enhance pollination services and biological control of crop pests, which are ecosystem services that can improve agricultural outputs. There are several programs at various levels of government in …
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Landscape composition and configuration affect nest founding but not success of bumble bee colonies in agroecosystems in the Lower Mainland of British Columbia, Canada.
… is likely to affect pollinator demography. Using naturally colonized nest boxes placed at 27 sites in the Lower Mainland of British Columbia, I assessed demographic responses of bumble bees to the availability of resources as inferred from landscape structure (i.e., landscape composition and …
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Social and ecological dimensions of supporting wild pollinators in tropical smallholder farms
… dynamics that influence the availability of habitat for wild pollinators in tropical smallholder farming landscapes. The dissertation consists of three data chapters from independent investigations, combining a global systematic review and meta-analysis with social and ecological fieldwork in …
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British botanic gardens and the biodiversity crisis, c.1960 – c.2000
… historically understood our relationship to the natural world, and why? Though often thought of only as places of leisure, or imperial institutions of the eighteenth and nineteenth centuries, botanical institutions have contributed significantly to the construction of environmental ideas, …
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Kinematic State Estimation using Multiple DGPS/MEMS-IMU Sensors
… the manoeuvrability of animals in their natural habitat to answer the question “Why are animals so manoeuvrable?” remains a challenge. This research aims to develop an outdoor MOCAP system that will allow tracking of the steady-state as well as the transient locomotion of an animal in its …
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Understanding the temporal variability of skin-associated bacterial communities for the conservation of threatened amphibian species
… In a series of three studies, I investigated the natural temporal and spatial variation in bacterial communities on the skin of wild and captive-born amphibians using 16S rRNA gene amplicon sequencing to characterize bacterial community diversity. First, in a study examining the skin bacterial …
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Assessing the limiting factors for re-introduction of sockeye salmon to the Coquitlam Water Supply Area
… watersheds as an integral part of their natural lifecycle. There are multiple initiatives being undertaken by BC Hydro and the stakeholders to re-introduce sockeye salmon (Oncorhynchus nerka) to one of their natural habitat in the upper Coquitlam watershed. Concerns have been raised that …
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Socialization and problem-solving in domestic cats (Felis catus)
… leading both solitary and social lives in their natural habitat, as well as in captive environments. I assessed both general problem-solving ability and the relationship between socialization and problem-solving ability, problem-solving speed, and latency to approach a novel apparatus in domestic …
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Equus as Client: A Biocentric Retreat
… to manifesting a safe, comfortable and inspiring habitat for mankind. This thesis asks what would happen to architecture and design if we shift the perspective towards animals and their natural habitat, well-being and social interactions? The horse will be used as a scalar measure for a …
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The physiology of the genus bacillus
… culture and also in mixed cultures in the natural habitat.
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Nitrogen and carbon costs of growth and antioxidant production during acclimation to environmental stress in two species of gethyllis
… and bulbous geophytes that grow naturally in the semi-arid succulent Karoo biome of South Africa. Both species grow under full sun conditions and have four distinctive growth phases: a winter (cold and wet) growing phase, leaf senescence phase towards spring, flowering phase …
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Efficacy of Nest Boxes for Wild Bumblebees as a Supplemental Pollination Strategy in Highbush Blueberry
… in 2022 and 18% occupation in 2023. Semi-natural habitat had a contrasting effect on both box occupation and in-field observations. Occupied boxes had a positive effect on bumblebee observations in 2023 when there were fewer bees present overall, pointing to potential for mitigating …
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Variation in sound production of the blue catfish, Ictalurus furcatus.
… calls by recording them in air and in the fish’s natural habitat. Sounds exhibited a wide variation in acoustic parameters relative to fish ontogeny: larger fish produced higher amplitude sounds with lower frequency bands. Sweep and pulse duration increased with fish size, but pulse rate and the …
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Effects of copper on the acute ventilatory drive of killifish, Fundulus heteroclitus
… are often exposed to multiple stressors in their natural habitat. While the effects of individual stressors alone are generally well-studied, their combined interactions are often unknown. One such unknown interaction is that between copper, an essential micronutrient that is toxic in high levels, …
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The physiological role and characterization of melanin produced by Shewanella algae BrY
… it uses for anaerobic respiration. Since the natural habitat of this non-fermenting organism is the oxiclanoxic interface of sediments, the ability to utilize various terminal electron acceptors contributes to its survival and growth. Among the terminal electron acceptors used by S. algae BrY …
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Sea level change in the Gulf Islands National Park Reserve, southern British Columbia : implications for the interpretation of nearshore archaeological features
… patterns, modifications to ecosystems and habitats, and potentially an altered marine food supply. This thesis examines local paleo-sea level curves for Southern Georgia Strait and the Southern Gulf Islands constructed from a literature search, GIS analysis, and archaeological data from …
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An Interdisciplinary Examination and Assessment of Current Conservation Initiatives for Javan Gibbons (Hylobates moloch)
Protection of an Endangered species in its natural habitat should be at the forefront of conservation priorities, and necessary measures should be taken to ensure conservation programs use a holistic approach when developing initiatives aimed at conserving species in the wild. The research …
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USE OF MOLECULAR APPROACHES TO STUDY THE OCCURRENCE OF EXTREMOPHILES AND EXTREMODURES IN NON-EXTREME ENVIRONMENTS
… Archaea and Bacteria within a community in their natural habitat. In addition, using EZ-PCR test, culturable-independent Mycoplasma DNA in environmental samples was detected. Further investigation, using other advanced molecular techniques, into the physiology of extremophilic microorganisms found …
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