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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
241

Ecology and environmental impact of Javan rusa deer (Cervus timorensis russa) in the Royal National Park

Moriarty, Andrew J. January 2004 (has links)
Thesis (Ph.D.)--University of Western Sydney, 2004. / A thesis presented to the University of Western Sydney, College of Science, Technology and Environment, School of Science, Food and Horticulture, in fulfilment of the requirements for the degree of Doctor of Philosophy. Includes bibliographies.
242

The effects of urbanization on raccoon population demographics, home range, and spatial distribution patterns /

Hatten, Inger Suzanne, January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves 92-99). Also available on the Internet.
243

The effects of urbanization on raccoon population demographics, home range, and spatial distribution patterns

Hatten, Inger Suzanne, January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves 92-99). Also available on the Internet.
244

Where Mountain Lions Traverse: Insights from Landscape Genetics in Southwestern United States and Northwestern Mexico

Naidu, Ashwin January 2015 (has links)
The projected growth in human population, rapid urbanization, and expansion of structures like highways and canals pose a major threat to the future survival of wildlife, particularly large terrestrial mammals. In many cases, wild animal populations have been restricted to fragmented habitat islands due to anthropogenic developments, endangering them to local extinction. Current and future wildlife conservation and management strategies are leading to the implementation of mitigation measures such as creation of wildlife habitat corridors. In this light, novel and interdisciplinary research methods such as approaches in the field of landscape genetics are proving to be increasingly useful and necessary for assessing the status of wildlife populations and furthering efficacy of conservation programs and management efforts. In this 5-year research study, I review literature in the field of landscape genetics, highlighting studies and their applications toward wildlife conservation over the past decade (2005-2014). I then use a landscape genetic approach to understand the potential impact of natural and human-made barriers in and around the northern Sonoran Desert on one of the widest-ranging mammals in the world, the mountain lion (Puma concolor). I employ recently developed genetic tools to assess the current population genetic status of mountain lions in this region and Geographic Information Systems (GIS) tools to relate observations to landscape features through interpretive maps. I further investigate the utility of GIS and expert-based models in connectivity conservation and suggest validating them with information on genetic relatedness and functional connectivity among mountain lions. Lastly, in many parts of this document, I emphasize the use of these methods and data sharing in conservation planning as well as wildlife management.
245

Predicting, valuing and managing wildlife crop raiding in the Luangwa valley, Zambia.

Nyirenda, Vincent R. January 2012 (has links)
Thesis (DTech. degree in Nature Conservation.)--Tshwane University of Technology, 2012. / Wildlife crop raiding is a pervasive and widespread problem. The purpose of the study is to investigate and understand underlying processes and structures associated with the crop raiding problem in the Luangwa Valley, Zambia in order to technically and scientifically support decisions by farmers and other stakeholders regarding crop raiding.
246

Forage availability and dietary selection of black rhinoceros (Diceros bicornis minor) on Mokopane Biodiversity Conservation Centre, Limpopo Province.

Malan, Emerentia Wilma. January 2010 (has links)
Thesis (MTech. degree in Nature Conservation.)--Tshwane University of Technology, 2010. / To a varying degree and for a variety of reasons black rhino require large areas of land but increasingly they are moved to smaller properties. Specific spatial and temporal problems are foreseen when keeping black rhino on small properties. The temporal problems under investigation on the Mokopane Biodiversity Conservation Centre where two black rhino are kept on 700 ha are: browse availability, browse utilisation as well as browse quality.
247

Conservation Genetics of the Tiger Rattlesnake (Crotalus tigris) in the Context of Long-term Ecological Data

Goode, Matt January 2015 (has links)
I combined long-term ecological data and population genetic data using microsatellite DNA markers to examine among- and within-population genetic structure and parentage in Tiger Rattlesnake (Crotalus tigris) populations from the Tucson Basin of southern Arizona located in the northern Sonoran Desert. Based on long-term data from radio telemetry, I determined that C. tigris show strong fidelity to both their home range and winter shelter sites, remaining in close proximity to rocky habitats within mountain ranges, which leads to apparent natural isolation of populations. Therefore, I predicted that C. tigris populations would show substantial genetic differentiation among mountain ranges. However, Bayesian clustering analyses revealed a surprising pattern of extensive admixture among mountain ranges, indicating the presence of gene flow among populations. This pattern of genetic admixture can likely be explained by historical changes in climate and physiognomy in the Sonoran Desert. Analyses of pack rat midden remains clearly show that mountain ranges were previously connected by mesic woodland habitats that may have led to panmixia in C. tigris populations as recently as 5,000-8,000 years ago. At present, C. tigris show a strong preference for xeroriparian washes, which allows individuals to occasionally move relatively long distances, likely resulting in contemporary gene flow. To maintain connections among mountain ranges, I recommend effective management, protection, and restoration (if needed) of wash habitats, which also act as corridors for a suite of other species. At the within population scale, genetic clustering analyses revealed the existence of fine-scale genetic structure in C. tigris subpopulations located in the Rincon Mountains. Further analyses based on location data of individuals indicated the existence of a potential barrier to gene flow, which corresponded to a watershed divide. Although the watershed divide would appear not to present a physical barrier to gene flow, it likely acts to segregate populations based on habitat and movement preferences associated with wash habitats. Data on spatial ecology and reproductive behavior, indicate that C. tigris distribute gametes across the landscape in the absence of actual displacement of individuals due to fidelity to home ranges and winter shelter sites. Analyses of parentage were constrained by the difficulty in obtaining offspring from gravid female C. tigris that give birth deep in rock outcrops. However, I did conduct analyses on over 30 offspring from known mothers and nearly 60 free-ranging offspring found while conducting ecological research. Surprisingly, not a single male C. tigris found courting or copulating with a female was identified as the father, indicating that reproductive behavior is a poor predictor of parentage, and therefore, fitness. Interestingly, males identified as fathers were found up to 2 km distance from their offspring, demonstrating that males from surrounding areas may move relatively long distances to mate. The mating system of C. tigris, which is characterized by promiscuity in both sexes, appears to drive dramatic differences in spatial ecology between males and females, and may lead to fine-scale genetic structure among females and not males who spend a great deal of time searching for receptive females.
248

Making Space for Mexican Wolves: Technology, Knowledge and Conservation Politics

Decker, Paula D. January 2013 (has links)
The use of geospatial technologies, including radio telemetry, GPS collars, and mapping software, has proliferated in wildlife conservation. In addition to being tools for research, though, tracking devices are increasingly used to control animals that have been reintroduced to natural areas. Animals with radio or GPS collars can be tracked, and when considered necessary, trapped and relocated or removed to captivity, a common practice in projects to reintroduce and conserve endangered carnivores. The assumption is that such actions will help to defuse conflicts over wildlife between wildlife managers and land users. Conservation has come to mean surveillance and control, a situation recently made possible by technology. This dissertation examines the role of geospatial technology in conservation through an examination of the Mexican Wolf Reintroduction Project taking place in Arizona and New Mexico. Major findings include: 1. Policies to monitor and control Mexican wolves represent a deferral of the struggle over priority uses of public lands; 2. State and local government agencies seized on the discourse of adaptive management to gain control over the reintroduction project and expand their institutional authority. Rather than a practice of "learning by doing" and collaboration, however, the adaptive management program that was implemented only operated smoothly when it held together a prior political consensus and fell apart when external factors worked to dissolve that consensus; 3. The policies of controlling "problem wolves" rest on a series of assumptions about human and wolf behavior that are unsubstantiated and likely false; 4. The embodied production of geospatial data about Mexican wolves is erased in project-authored maps, which privilege a partial perspective on Mexican wolf distribution and territory; and 5. The practices of Mexican wolf monitoring and control are best understood as political technologies of governance that constitute Mexican wolves as individualized, domesticated and, I argue, racialized subjects. The policies and practices governing the Mexican wolf reintroduction project, this dissertation shows, have relied on technological surveillance and control, with complex and contradictory results for people-wolf relations and the politics of conservation.
249

A Spatial Analysis and Zooarchaeological Interpretation of Archaeological Bison Remains in the Southwest and the Wildlife Management Implications for the House Rock Valley Bison Herd in Grand Canyon National Park, Arizona

Huffer, Donelle Joy January 2013 (has links)
The historically introduced House Rock Valley bison herd has, in recent years, migrated from the eastern Arizona Strip onto the Kaibab Plateau within Grand Canyon National Park. Bison are considered a nonnative species to the southern Colorado Plateau, and the animals adversely impact sensitive ecosystems prompting National Park Service wildlife managers to pursue their removal. Archaeofaunal evidence of bison in the Grand Canyon and neighboring regions, however, raises concern that bison may in fact be native. Assessing the evidence within a zooarchaeological interpretive framework is critical since mere presence/absence lists of bison remains do not address the potentially complex cultural processes involved in the formation of archaeofaunal assemblages. Inter-assemblage comparisons illustrate a decline in relative abundance and skeletal completeness correlated to distance from traditionally understood historical bison distribution. If bison were present in the Southwest, as the evidence suggests, they likely entered the region only occasionally as small, dispersed herds.
250

"Working a great hardship on us" : First Nations people, the state and fur conservation in British Columbia before 1935

Ireland, Brenda Marie 05 1900 (has links)
Divergent values and. approaches to land and resource use and fur conservation created conflicts between aboriginal and non- aboriginal peoples which have remained largely hidden in historical records. This study of the compulsory trap line registration system implemented in British Columbia in 1925 examines these conflicts; the jurisdictional arid administrative issues related, to fur conservation that contributed, to the disputes; and the First Nations objections to fur management schemes that validated white appropriation of traditional lands and restricted traditional vocations and access to important sources of food.' supplies. Although First Nations people spoke persuasively about aboriginal rights and justice, their voices remained largely unheard and. unheeded. Legally disempowered and without political support, First Nation's people were marginalized, removed from lands they had occupied and used, since 'time immemorial.'

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