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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.

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