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 “"anthropogenic change"”.
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Developing in situ instrumentation to monitor anthropogenic change
To predict and mitigate anthropogenic impacts on the ocean, we must understand the underlying systems that govern the ocean’s response to inputs (e.g. carbon dioxide, pollutants). Analytical models can be used to generate predictions and simulate intervention strategies, but they must be grounded …
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Developing In Situ Instrumentation to Monitor Anthropogenic Change
To predict and mitigate anthropogenic impacts on the ocean, we must understand the underlying systems that govern the ocean's response to inputs (e.g. carbon dioxide, pollutants) . Analytical models can be used to generate predictions and simulate intervention strategies, but they must be grounded …
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Effects of anthropogenic change on animal cognition and emotion
… are less studied. In this thesis, I argue that anthropogenic change impacts animals’ mental states, with implications for both individuals (welfare) and populations (conservation). My first experiment explores the transition from keeping dairy cattle at pasture to housing them indoors full-time. …
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Conceptualizing Anthropogenic Change in Fluvial Systems: Drainage Development on the Upper Embarras River, Illinois
… of human and biophysical dimensions of landscape change; and (2) to demonstrate how such integrated analysis can produce knowledge of landscape change that transcends that which is likely to emerge from separate investigations of human and biophysical processes. At the core is the analysis of the …
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Malleefowl and anthropogenic change: an integrated analysis of population trends, landscape genetics and movement ecology
… native and introduced herbivores. Climate change is expected to exacerbate these pressures by leading to more frequent and longer periods of high temperatures, reduced precipitation and increased frequency and intensity of wildfires. This thesis aimed to investigate how historic and recent …
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Effects of anthropogenic change on interactions between North American tephritid flies and their biotic associates
Anthropogenic environmental change is increasingly altering species ranges, community composition, and ecological interactions. Climate change, agriculture, invasive species, and human management of land all affect insect community dynamics, interactions between competitors and natural enemies, and …
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Between a Rock and a Hard Place: An Investigation of Rock Squirrel (Otospermophilus variegatus) Behavioral Response to Anthropogenic Change
… altered habitat use, potential synanthropy, and changes in social dynamics. Urbanization may influence behaviors such as foraging and vigilance, which are essential for survival. However, there is still much we don’t fully understand about how these behaviors change in urban environments. For …
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Exploring Eastern Musk Turtle (Sternotherus odoratus) Population Dynamics and Phenotypic Plasticity in Comal Springs, Texas
… ecosystems but are increasingly affected by anthropogenic change. The eastern musk turtle (Sternotherus odoratus) is a small, omnivorous species inhabiting spring systems in Central Texas, where invasive gastropods have become abundant. This study investigates whether dietary shifts toward …
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Fish Community Assembly At Multiple Spatial Scales In East Texas Streams
… respond to disturbance associated with anthropogenic change. I investigated the relative role environmental variables play in the processes that structure the taxonomic and functional diversity of stream fish communities, as well as historical trends in occurrence and local habitat …
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Beyond the Pristine: Reframing the Notion of Nature Conservation through the Agency of Plant 'Vagabonds' in Toronto's Rouge National Urban Park
… Yet, in the context of today's rapid anthropogenic change, this concept is increasingly flawed and irrelevant. This thesis draws from interdisciplinary literature in political ecology, geography, and landscape architecture to explore Rouge National Urban Park, Toronto's newest category …
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ENVIRONMENTAL FEATURES INFLUENCE COMPLEX BEHAVIOR IN SMALL GROUPS OF ANIMALS
… I report on experiments showing how small changes in the environment can affect the expression of behavior at different points in development and can have important physiological consequences for litters of mouse pups. I then report on two sets of experiments showing how subtle changes in …
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Freshwater Invertebrate Assimilation Nutrients from Detrital Biofilms Under Light and Phosphorus Manipulation
<p>Anthropogenic influences are increasing algal biomass and activity within aquatic ecosystems, stimulating debate regarding interactions between “green” and “brown” food webs. Specifically, in forested streams, the removal of forest canopy or riparian zones increases light exposure and nutrient …
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Relations between Landscape Structure and a Watershed's Capacity to Regulate River Flooding
… and aquatic environments. Impacts of landscape changes on streamflow and floods are known, but few studies have explored the magnitude, duration and count of floods the landscape can influence. Understanding how floods are influenced by landscape structure provides insight into how, why and …
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Anthropogenic influences on the behavioural ecology of urban vervet monkeys
… upon its ability to adapt to environmental changes and available resources; consequently, generalist omnivorous species thrive in the continually developing urban landscape and preferentially choose the urban setting over its rural counterpart. Our understanding of wildlife’s flexibility to …
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Anthropogenic landscapes : Owens Lake, CA
… Architecture, an important contributor to anthropogenic change, offers the opportunity to re-engage with the site. Stan Allen writes that "any work of architecture is (first) a transformation of the landscape." [1] Inevitably, architecture sits on and interacts with land, is composed of …
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Development and application of an antibody-based protein microarray to assess stress in grizzly bears (Ursus arctos)
… of roads in the habitat and the amount of anthropogenic change in the bear’s home range. Regional trends of expression found bears in Swan Hills and bears from North highway 16 having elevated expression of the proteins measured by the microarray. The protein microarray was thus able to …
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Abiotic and Biotic Factors Shaping Plant-Microbe Interactions
… communities is rapidly shifting due to anthropogenic change, understanding the factors that shape plant-microbe interactions will allow us to make more accurate predictions of ecological interactions both presently and in the future. Here, we explore plant-microbe interactions across …
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Effects of Hurricane Disturbance on the Stopover Ecology of Intercontinental Landbird Migrants in Coastal Louisiana
… that occur along the northern coast of the GOM. Anthropogenic change, hurricanes, sea level rise, and coastal subsidence have greatly reduced the amount of coastal forest in this region, which may affect the stopover biology of migratory birds. In southwestern Louisiana, coastal cheniere forests …
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Eastern Redcedar Encroachment In Southern Great Plains Grasslands: Wildlife Consequences And Management Implications
Anthropogenic change in the Great Plains of North America within the past two centuries has facilitated extensive woody encroachment by eastern redcedar (Juniperus virginiana, hereafter redcedar). Conversion of grassland to redcedar woodland occurs rapidly as a result of the interaction between …
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Variation drives response to urbanisation: Evolutionary ecology of two introduced birds within anthropogenic environments : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
Anthropogenic change causes landscape alteration and fragmentation, which leads to novel challenges for wildlife. Wildlife colonising anthropogenic habitats confront new conditions, such as air and noise pollution, limited space and food resources, higher levels of competition and predator …
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