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 20 for “"Wildlife Population"”.
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Improving the Use of Migration Counts for Wildlife Population Monitoring
Counts of migrating animals are used to monitor populations, particularly for species that are not well sampled by breeding and wintering surveys. The use of migration counts for population monitoring relies on the assumptions that new individuals are detected each day, and that probability of …
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Examining the Influence of Wildlife Population and Fecal Coliform Density Variability on Virginia Bacterial TMDL Development
… of all residential, agricultural, and wildlife sources of bacteria. Wildlife bacteria source characterization is typically conducted with estimates of population and fecal coliform production. A sensitivity analysis was performed on the bacteria TMDL development process and the HSPF …
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Nest-site resources for cavity-nesting birds in the southern Allegheny Mountain forests of West Virginia
… cover types. Management must focus on monitoring wildlife population levels as well as habitat requirements within each cover type. Cavity tree abundance significantly differed among central hardwood (x¯ = 16.4; SE = 5.3), northern hardwood (x¯ =12.7; SE = 6.8), and boreal forest cover …
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Patterns in Gray Wolf Pup Survival and Recruitment in Northern Minnesota
<p>Knowledge of how and why the vital rates of wildlife populations change through and over time is crucial for understanding wildlife population dynamics. Because estimating gray wolf pup survival is challenging, our understanding of pup survival and the factors influencing survival and …
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Using high resolution satellite imagery to map aquatic macropyhtes on multiple lakes in northern Indiana
… along their shorelines, support a diverse wildlife population, and are susceptible to invasive species. An unsupervised classification was used to develop two levels of classification. The Level I classification divided the vegetation into detailed classes of emergent and submerged …
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Dynamique des populations de caribous migrateurs (Rangifer tarandus) basée sur des indices de condition corporelle
Monitoring and understanding wildlife population dynamics is key to their management and conservation. High population size or density can negatively affect demographic parameters including reproduction, recruitment and survival. These parameters are intricately linked to individual body size and …
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Relative Effects of Landscape Structure Variables, and Interactions with Life-History Traits, on the Abundance and Distribution of Wetland-Dependent Vertebrate Species
… species are undergoing the largest wildlife population declines worldwide primarily due to habitat loss, but are a relatively understudied ecological group in landscape ecology. The overarching goal of my dissertation is to advance our understanding of the effects of landscape …
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Spatial capture-recapture for acoustic surveys
… one method to estimate the animal density of a wildlife population, where animal density describes the number of animals per unit area within the survey region. Since SCR’s inception, it has seen increasing use in estimating animal density from data collected by non-invasive sampling methods …
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Exploring regionalization techniques: Simulation and application in ecology
… This diversity may generate differences in wildlife population dynamics across the region. As such, creating discrete spatial units in this area, based on relevant ecological data, may aid ecologists studying waterfowl population trends. The final results indicate that 25 regions in the PPR …
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Three essays on disease, development, and intervention
… be explored. We present a multi-species dynamic population model of wildlife management in which a manager applies spatial or individual-based disease protection interventions to a wildlife species with high existence value. We use the model to investigate the choice between the alternative …
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Modeling risk of hunting pressure on large mammals in northwestern Argentina
… and increased human presence may be affecting wildlife in this increasingly fragmented and degraded landscape. We initiated a broad-scale analysis of the spatial distribution and magnitude of anthropogenic factors that may influence large mammal mortality due to potential human hunting pressure …
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Modeling risk of hunting pressure on large mammals in northwestern Argentina
… and increased human presence may be affecting wildlife in this increasingly fragmented and degraded landscape. We initiated a broad-scale analysis of the spatial distribution and magnitude of anthropogenic factors that may influence large mammal mortality due to potential human hunting pressure …
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Landuse practices interface:Human-Wildlife conflict in Lupande game management area
Human-Wildlife Conflict (HWC) has become a serious threat to the survival of many endangered species in the world. The sighted examples from different countries such as Kenya, Zimbabwe, Zanzibar, Namibia, China and Peru demonstrate the severity of the conflict and suggest that greater in depth …
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Landuse practices interface:Human-Wildlife conflict in Lupande game management area
Human-Wildlife Conflict (HWC) has become a serious threat to the survival of many endangered species in the world. The sighted examples from different countries such as Kenya, Zimbabwe, Zanzibar, Namibia, China and Peru demonstrate the severity of the conflict and suggest that greater in depth …
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Essays in the economic implications of select animal health and crop production issues
… and long-run. An 11.95% industry adoption of a wildlife population management (WPM) program on livestock facilities cause a gain in producer surplus of $1.15 billion in the short-run with long-run gains of $18.33 million for the meat industry. The second essay assesses the impact of various …
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Rough leucine auxotrophic strains of <i>Brucella</i> expressing <i>Salmonella</i> flagellin C conjugated gonadotropins, an immunocontraceptive brucellosis vaccine for feral swine population control
… with global impacts on human, livestock, and wildlife health. Around 500,000 cases of human brucellosis are reported by the World Health Organization annually. Even though brucellosis has been eradicated from domestic livestock in the United States of America, the causative bacterial pathogen …
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Factors influencing the establishment of translocated eland (Taurotragus oryx) and springbok (Antidorcas marsupialis) in the Nyae Nyae conservancy, Namibia
… of communal conservancies that aim to conserve wildlife outside protected areas, as well as benefit local communities. Recent translocations in Namibia involved the movement of wildlife from protected areas to communal conservancies in order to expand the range of wildlife species in the areas …
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Monitoring amphibian populations and the status of wood frogs and boreal chorus frogs in the Kawuneeche Valley of Rocky Mountain National Park
… component of any program for monitoring a wildlife population. Annual counts of egg masses have been promoted as an appropriate state variable for monitoring populations of some amphibian species. In Chapters 1 and 2, I evaluate different aspects of the use of counts of egg masses as a …
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Availability of Organochlorides and Accumulation in Populations of Tadarida brasiliensis (Free-Tailed Bat) and Eptesicus fuscus (Big Brown Bat)
… Due to these problems, especially declines in wildlife populations, organochlorides were restricted in the 1970's and a majority of them were banned in the mid to late 1980's. The effects of organochlorides on bats such as Tadarida brasiliensis and Eptesicus fuscus have been intensively …
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The Asian Palm Civet: Fundamental Baseline Findings in Ecology, Captive Husbandry and Effects of Trade in Civet Coffee
Global wildlife population trends are being depleted due to wildlife trade, habitat loss, anthropogenic activities and climate change and only a few of the treats to named species reach global awareness. In respect to mammalian carnivores these tend to be the large charismatic species such as …