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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.
1

An Analysis of the Ecology and Public Perception of Coarse Woody Debris in Virginia

Fuhrman, Nicholas E. 21 July 2004 (has links)
Coarse woody debris (CWD) is an important habitat component for wildlife, fish, and plants and is important in nutrient cycling and soil formation. Knowledge of the volume, distribution, and use of CWD across Virginia would be useful to forest managers modeling nutrient budgets in southeastern forests and is important to wildlife management efforts. Knowledge of the effectiveness of informational brochures and cooperative learning activities/presentations at influencing public perception of CWD is important to program design and evaluation efforts in teaching and extension. The objectives of this study were to quantify the relationship between forest cover type and CWD volume, correlate CWD volume with small mammal and bird activity, distribute information on the advantages and disadvantages of CWD using informational brochures and cooperative learning activities/presentations, and compare the effectiveness of such teaching techniques at influencing public perception of CWD. The volume and wildlife use of CWD was assessed within 12 mature second-growth stands in Virginia. Volume of CWD was measured using fixed-area plots. Use of CWD by small mammals and birds was assessed by noting bodily, foraging, or movement evidence. Pre- and post-survey instruments were used to evaluate how perceptions were altered in first year college students who either reviewed an informational brochure or participated in a cooperative learning activity/presentation. Results suggested that the management of CWD for wildlife was most needed in southeastern Virginia where CWD volumes were lowest and that the value of CWD for wildlife was best conveyed through cooperative learning activities/presentations and may be important to landowner education efforts. Results suggested that management efforts to increase CWD volumes in Virginia should focus on coniferous dominated stands where CWD volumes were lowest. Such a finding, combined with the knowledge that the value of CWD was best conveyed through presentations, suggests that landowners of coniferous woodlots could be effectively educated with presentations. Given that brochures were more effective for females than males, brochures addressing natural resource issues might be the most appropriate, cost effective method of education at events that target female audiences. Knowledge gained from this study that CWD management for wildlife would be most appropriate in western Virginia where CWD was most used by wildlife for travel and that presentations were most effective at reaching suburban participants may be important to outreach program design efforts. Regardless of academic major, presentations were more effective at generating positive attitudes toward CWD. The results of this study suggest that the choice between informational brochures and presentations for influencing public perceptions of CWD will likely be influenced by the demographics of the target audience and the relevance of the topic locally. / Master of Science
2

The Social Life of Wild-Things: Negotiated Wildlife in Mali, West Africa

Edwards, Ian, Edwards, Ian January 2012 (has links)
Two markets located in Bamako, Mali, West Africa specialize in the commodification of wildlife, and in so doing contest western-centric notions of globalization. Founded in traditional medicine, the Marabagaw Yoro sells wildlife to serve the needs of the local community, while the Artisana, a state sponsored institution, manufactures fashion accoutrements from wildlife and is oriented towards meeting the demands of tourists. Actors in both markets effectively curb the impact of national and international forces and demonstrate the necessity of putting local-global relations at the heart of transnational studies. Malians are not weak and reactive, but potent and proactive. They become so by engaging in networks that move out from the two markets and that intersect to a degree. Through these networks, local actors negotiate and/or manipulate national and international forces for personal benefit for example, using wildlife for profit, despite national and international sanctions. As such, these markets are sites of articulation, where local resource users engage the world at large and actively negotiate a myriad of values as well as mediate political and economic pressures. Investigating these networks helps us understand the actual, empirical complexities of globalization while allowing for the agency of local actors. Supplemental File: Wild Species of the APT and their Conservation Status This file is an Excel spreadsheet of all wild species recorded in association with the Animal Parts Trade (APT) of Mali. It includes the following classes of vertebrates: Pisces, Aves, Reptilia, and Mammalia, as well as provides their conservation status and additional details.
3

Evaluation of New England Bridges for Bat Roosting Including Methodology and Case Studies

Berthaume, Angela 11 July 2017 (has links)
Bats are known and documented to use bridge structures as roosts in various locations throughout the United States and abroad, but there is limited knowledge of how bats use bridges in New England. Significant population declines due to White-Nose Syndrome have resulted in several bat species being listed as state or federally threatened or endangered. If bats are using bridges as roosts, significant effort is required to ensure they are not disturbed or harmed during construction or maintenance work, requiring knowledge of assessment methods to identify likely roost locations in bridges. This thesis describes a two summer study evaluating the bat roosting potential in New England bridges. During this study, 191 bridges were rapidly screened throughout New England for bat roosting potential, with eighteen selected for more detailed evaluations. Various monitoring techniques to determine bat roosting potential were assessed at each bridge evaluated, including acoustic monitoring and analyses, infrared imaging, borescope inspection, visual inspection, emergence studies, and guano testing for species identification. The current federal form required to assess bat roosting in bridges slated for construction work was assessed for its appropriateness in the New England region. A supplemental form has been developed through this study that is recommended to be used in conjunction with the federal form to better assess roosting potential in New England bridges. Training and collaboration is also recommended for personnel completing forms and inspectors familiar with state bridges. When the study began, there was only one known bat bridge roost in New England known. After this two summer study, thirteen bridges have been positively identified as bat roosting sites in New England, with possible roosting at several other bridges. Information gathered through this study on bat roosting potential in bridges and the various monitoring techniques evaluated to positively identify bat roosting in bridges can be used as guidance for state Transportation Agencies developing protocol for construction at potential roosting sites.
4

Investigating Access to Wildlife and Other Natural Resources in the Urbanizing Amazon

Gomes, Lisley Pereira Lemos Nogueira 04 September 2024 (has links)
This thesis examined the complex socio-ecological dynamics in the Brazilian Amazon, focusing on the mechanisms that allow Amazonians to access natural resources along the gradient of urbanization. While Amazonian conservation and development policies have traditionally targeted rural areas, there is a growing need to consider the interconnectedness between urban, peri-urban (i.e. the area surrounding the urban center) and rural communities as the region urbanizes. The overall research question that guided this thesis research was "How does urbanization affect access to natural resources and how does access affect natural resource use?". We aimed to address key aspects of these relationships and the implications for sustainable development and conservation efforts. The first chapter explored the mechanisms by which rural, peri-urban, and urban populations in the Amazon access natural resources, focusing on the varied resources they use as food. Using the Theory of Access' framework and 33 semi-structured interviews with participants selected by snowball sampling in Manaus and Carauari (Amazonas, Brazil), we identified physical, knowledge, structural, social, and rights-based mechanisms as key to understanding resource access. The findings indicate that materiality (i.e. the presence and quality of a given resource), and knowledge were salient for rural and peri-urban people, who live in close proximity to natural resources, to establish access. Technology, such as mobile phones and internet access, further facilitated exchanges across the urbanization gradient. We also found out that the combination of mobility and social relations resulted in greater access to natural resources for those not living in physical proximity to such resources, for those not recognized as legitimate users, or for those that do not know how to extract natural resources. Across the gradient, people made use of social mechanisms and power to reinforce reciprocity among peers and access food. This study contributed to the advancement of the Access Theory by highlighting that people holding power, because of customary, social, institutional, political, and commercial power, accessed or controlled other people's access to natural resources, despite of legal constraints. By extending the notion of access to natural resources as bundles of diverse structural, knowledge, social, power, and rights-based mechanisms, novel policies can be designed to foster sustainable resource use while addressing power disparities for the development of the Brazilian Amazon. The second chapter examined the prevalence and quantity of wildmeat consumption, barter trade, and monetary trade across rural, peri-urban, and urban areas in the Brazilian Amazon. Through an indirect questioning technique, we surveyed 782 randomly selected households in Manaus and Carauari. We revealed substantial wildlife use throughout the urbanization gradient. In urban households, the rates of wildlife consumption, barter trade, and sale are significant (Manaus: 22%, 17%, 21%; Carauari: 57%, 30%, 7%, respectively), with higher market access in Manaus, the big city. Additionally, we found that wildlife trade occurred in both urban areas assessed, with an estimate of 21% (7-34%: Carauari) and 16% (6-26%: Manaus) of urban households trading wildmeat. Participation of peri-urban households in wildlife trade was high, especially close to Manaus. Results point to a need for inclusive wildlife policies, which regulate subsistence hunting, integrate fish and wildlife management within community-based conservation, implement measures to curtail illegal trade, and promote urban-rural development strategies. Together, these chapters highlight the importance of a collaborative and inclusive approach to conservation in the Amazon, recognizing the interconnectedness of rural and urban communities. To foster sustainable development, conservation strategies must prioritize equitable access to natural resources and promote the active participation of rural, peri-urban and urban inhabitants in shaping conservation outcomes. / Master of Science / In this study, we examined how people in the Brazilian Amazon access natural resources. Imagine living in a place with rich rainforests, rivers, and unique animals. Immersed in this forest matrix are one big city and several small towns where people have markets to obtain their food, commute to work and school in crowded roads, use mobile technologies such as internet and mobile banking. In this thesis, we studied how Amazonian people in different places get the food they eat, like animals, fish, açaí berries, and Brazil nuts. In order to do so, we asked people living in the rural and highly forested areas, in the areas within and around a small town, Carauari, and one big city, Manaus, how they were able to obtain these foods. We divided this study in two chapters, which are presented below: Chapter 1: How people obtain natural resources We talked to people in different parts of the Amazon, from rural villages to a big city, to understand how they get access to natural resources as food. We found that people who live close to the resources, such as those in the rural areas, can easily collect food. Others use their knowledge and social connections, sharing food with friends, family, and people they trust. Technology, such as mobile phones and the internet, also helps them exchange resources. People frequently move among the countryside and the city to access natural resources. Influential individuals, such as politicians, environmental agents, and merchants, can get natural resources whenever they want or easily control what others can access. Our findings highlight the importance of social relations, power, and technology in accessing natural resources and suggest new policies to promote fair and sustainable use in the Amazon. Chapter 2: Wildlife in the big city, in the small town, and in the rural areas We also looked at the amount of wild meat from birds, mammals, and river turtles and tortoises that people consumed, sold, or exchanged with others. Around a quarter of families in the big city, Manaus, and more than half of the families in the small town of Carauari consumed wild meat. We also found that they may share or sell them, especially in the surrounding areas of the big city, where the amount of people demanding wild meat can be high. This can be a problem for wildlife and for people if there is not enough meat for everyone to eat, share or trade. So, to create a sustainable pathway for wildlife and people, we suggested conservation policies that: promote the inclusion of city people in sustainable plans for wildlife, make the use of people's contribution in strategies to protect wildlife, and that ensure that everyone has what to eat as an ally of wildlife conservation. Conclusion: Working together for the Amazon Conserving the Amazon rainforest is a team effort. Rural and city communities are connected, and we must share resources fairly. By doing this, we can help the Amazon thrive while taking care of its people.

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