• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 260
  • 24
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 4
  • 2
  • 2
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 329
  • 329
  • 220
  • 113
  • 85
  • 78
  • 74
  • 63
  • 47
  • 45
  • 45
  • 39
  • 31
  • 31
  • 30
  • 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.
261

An analysis of local Karang culture, knowledge, and natural resource use patterns in the Kaengkrachan National Park, Phetchaburi, Thailand

Rojanasaeng, Nonglak 10 December 2001 (has links)
This study analyses the culture, knowledge and resource use patterns of the Karang tribe in Phong-Luk village, which is located at the Kaengkrachan National Park. The goal of this project is to reveal the culture-based local wisdom of the Karang tribe that is consistent with sustainable environmental resource management and to recommend guidelines for governments to revise existing policies related to the tribe that are relevant with their cultural ways of life. This project is expected to enhance awareness of local wisdom and offer a strategy to relieve the pressure of resource use between the tribe and the national park. The specific objectives of this research were to 1) analyze the local production practices, land utilization practices and belief, and 2) identify and analyze the key issues of local wisdom that are consistent with the conservation and sustainable management of the local natural resources and the environment. Finally, the analysis explored the affects of the existing policies (e.g., national park and development promotion policies) on the tribe's livelihood and the expected impact on the natural environments due to the shift in practices of the tribe. analysis explored the affects of the existing policies (e.g., national park and development promotion policies) on the tribe's livelihood and the expected impact on the natural environments due to the shift in practices of the tribe. This research utilized a qualitative research methodology to study and understand the overall picture of the community. Interview and observation techniques were used to identify the important issues, which included the history and settlement of the community, production patterns, land utilization patterns, belief systems, relationships within the community and government policies. The research indicates that traditional production practices, traditional land tenure arrangements and cultural beliefs provide the tribe a means of self-reliance and environmental sustainability. However, these customary practices and beliefs are being threatened by government policies. Therefore, the recommendations are provided to guide policymakers in ways to incorporate the wisdom of the tribe in future decisions. / Graduation date: 2002
262

Testing the ArcGIS Marine Data Model : busing spatial information to examine habitat utilization patterns of reef fish along the west coast of Hawaii

Aaby, Alyssa Anne 06 March 2007 (has links)
In response to anthropogenic pressures that have degraded habitat and put marine resources at risk (Leslie et al., 2003; Mumby et al., 2001; Puniwai et al., 2003), there has been a growing interest in the use of marine protected areas (MPAs) as a management tool to help slow, prevent or reverse negative anthropogenic changes. Recent studies have shown that the most effective MPAs are those which represent a full range of habitat types (Leslie et al., 2003; Carr et al., 2003). Yet, available scientific research has not evaluated the near-shore marine habitat utilization along the West Coast of Hawaii at the large-scales utilized by resource managers. Thus, this study focused on identifying the regional habitat utilization patterns for selected Hawaiian reef fish species to determine the most effective combination of habitat types. In addition, the habitat utilization analysis was used as one of several case studies to test the ArcGIS Marine Data Model���s (MDM) (Wright et al., 2001) adaptability to work with real-world data and perform real-world analyses, as well as meet the five goals outlined by the MDM Working Group (Wright et al., 2001). Created in 2001, by researchers from Oregon State University, Duke University, NOAA, the Danish Hydrologic Institute and ESRI, the MDM is a geodatabase template tailored to meet the needs of the marine GIS user community. Ultimately, this analysis will aid marine managers as it establishes correlations between small and large-scale habitat information, which provides a regional look at habitat utilization. Also, by testing the functionality of the MDM, its strengths and weaknesses will be identified so that it can be improved to better serve the marine GIS user community. / Presentation date: 2004-06-08 / Graduation date: 2005
263

National Park Service Cave and Karst Resources Management Case Study: Great Smoky Mountains National Park

Nolfi, Daniel C. 01 May 2011 (has links)
As discussed in the National Parks Service’s (NPS) Directors Orders/Natural Resources Management Reference Manual #77 and the 2006 NPS Management Policy Handbook, implementing a management plan specifically for cave and karst resources within a national park is paramount to afford these resources appropriate protection. With support from the Federal Cave Resources Protection Act and the National Park Service Organic Act of 1906, management actions protecting caves has begun to place significant importance outside the traditional cave environment onto a broader karst landscape. The need to understand and protect the karst environment and caves as a karst resource has taken a much larger role in the scientific literature and has increased interest in its federal management application. Proactive management through the use of holistic karst wide management plans and programs is shown to provide superior measures for resource protection when compared to the shortcomings associated with reactive cave focused management. The use of Great Smoky Mountains National Park (GRSM) as a case study supports the need to develop and implement a proactive cave and karst management plan specific to their resources. Management decisions with regards to cave and karst resources currently follow the park's general directives and Superintendent's Compendium. GRSM’s caves and karst areas represent unique resources, such as extensive vertical relief and rare biota, requiring special management in order to effectively protect them and to manage those who study and recreate within them. Characteristics such as these necessitate holistically addressing management of these resources.
264

Vegetation and fire history of Ponderosa Pine - White Fir forest in Crater Lake National Park /

McNeil, Robert Curlan. January 1975 (has links)
Thesis (M.S.)-Oregon State University, 1975. / Typescript (photocopy). Includes bibliographical references (leaves 120-127). Also available via the Internet.
265

Environmental politics in a highland Sardinian community

Heatherington, Tracey January 1993 (has links)
The movement to protect wilderness resources can conflict with local intentions for land use and development, particularly in economically marginal areas. In rural Italy, on the island of Sardinia, the plan to create a Gennargentu National Park has incited active opposition on the part of the communities affected. In the town of Baunei, responses to environmental legislation are motivated by the desire to maintain communal control over common lands. Political action, both formal and informal, is organised by local understandings about the impact of certain laws and institutions on the town economy, principally by the restriction of residents' usi civici (traditional rights of usufruct). This thesis considers the role and meaning of the usi civici in Baunei, and the implications of this for environmental politics in Sardinia.
266

Involving communities in managing protected areas : a case study of the local board for Ukhahlamba Drakensberg Park.

Nkhoma, Rodgers. January 2004 (has links)
No abstract available. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.
267

A comparison of the coverage of the use/preservation debate in the Courier and the National parks magazines during 1979 and 1987 to determine the influence of democratic and republican administration on editorial content

Bard, Dario January 1996 (has links)
This study is a content analysis examining coverage of the use/preservation debate in the National Park Service's internal magazine (Courier) and in the magazine (National Parks) of the National Parks and Conservation Association (an environmental lobbying group). The premise of this study is that under a Democratic, as opposed to a Republican, President, the Courier's coverage of the debate will have a similar level of pro-preservation/anti-use spin as the National Parks.A chi-square analysis of coded data derived from selected articles from the January to October 1979 and 1987 issues of the magazines demonstrated that although both magazines were predominantly neutral, National Parks had a significantly greater amount of propreservation/anti-use spin in both 1979 and 1987. The researcher suggested that the Courier's consistently neutral coverage was a condition of the NPS's role as compromiser in the use/preservation debate. / Department of Journalism
268

Habitats and macroinvertebrate fauna of the reef-top of Rarotonga, Cook Islands : implications for fisheries and conservation management

Drumm, Darrin Jared, n/a January 2005 (has links)
Throughout the Pacific, many species of echinoderms and molluscs have cultural value and are harvested extensively in subsistence fisheries. Many of these species are sedentary and often associated with distinct reef-top habitats. Despite the significance of reef habitats and their fauna for fisheries and biodiversity etc, little information has been available on the distribution of habitats and their influence on the reef-top fauna in the Cook Islands. This thesis developed a novel approach to assess the status of the shallow-water reef-tops of Rarotonga, Cook Islands, to provide critical information to fisheries and conservation managers. The approach used remote sensing (aerial photography with ground truthing) to map the spatial arrangement and extent of the entire reef-top habitats accurately, and historical wind data and coastline shape to determine the windward and leeward sides of the island. The benthic habitat maps and degree of wind exposure were used to design and undertake a stratified sampling programme to assess the distribution and abundance of the epibenthic macroinvertebrate fauna of the reef-top. I quantified the distribution and abundance of the epibenthic macroinvertebrates and how they varied with habitat, assessed the effectiveness of a traditional ra�ui (marine protected area) for conserving stocks of Trochus niloticus and other invertebrates, and investigated the reproductive biology and impacts of traditional gonad harvesting on Holothuria leucospilota. There were four major habitat types (rubble/rock, sand/coral matrix, algal rim and sand) identified, the most extensive being rubble/rock (45%) and sand/coral matrix (35%). The degree of exposure to winds was found to correlate with the reef development and habitat distribution. The assemblage composition of each major habitat type differed significantly from every other habitat. The rubble/rock habitat had the greatest substratum heterogeneity and structural complexity, and the highest number of species and individuals. The overall abundance of the fauna was dominated by holothurians (68%) and echinoids (30%), while Trochus niloticus and Tridacna maxima accounted for the remaining 2% of the total invertebrate assemblage. Clear habitat partitioning was also found for adult and juvenile Trochus niloticus and Tridacna maxima. In the traditional fishery for Holothuria leucospilota, the mature gonads of males are harvested by making an incision in the body-wall of the animal, removing the gonads and then returning the animal to the reef to allow regeneration. Monthly collections of H. leucospilota were used to describe the reproductive biology of this species. Gametogenesis and spawning were synchronous between the sexes and spawning occurred annually during summer, when water temperature and photoperiod were at their highest. Although the incision in the body-wall and gonad removal had no impact on the survival of H.leucospilota in experimental cages, their body weight, and general sheltering and feeding behaviors were affected. Gonads took at least 41 days to start regenerating, suggesting a considerable delay in the spawning of fished individuals. In 1998, five Rarotongan communities re-introduced the traditional ra�ui system of resource management, prohibiting all fishing and gathering from their reefs. The performance of the Nikao ra�ui, which had been put in place to allow trochus stocks to increase, was investigated. Comparisons of macroinvertebrate assemblage composition and species density were made between three fishing treatments, i.e. fished areas adjacent to the ra�ui, within the ra�ui after two years of protection, and in the ra�ui after it had been lifted for three weeks to allow a commercial trochus harvest. Analysis of variance on the count data for the twelve most abundant species, and non-metric multi-dimensional scaling indicated that there were no differences in the microhabitat or the invertebrate assemblage composition between the three fishing treatments. However, there were significant differences between the rubble/rock and sand/coral matrix habitat types. The results on the effectiveness of the Nikao ra�ui are equivocal, due to the small sample size, and the variability between samples which was highlighted by the wide confidence intervals. This study highlights the importance of habitat to the macroinvertebrate fauna of the reef-top and the need for accurate habitat maps to increase the cost-effectiveness of future resource surveys, to provide information to management, and for the design of Marine Protected Areas. The mapping and survey methods must be reliable and repeatable in terms of the limitations of time, and the availability of expertise, funding and resources. The results provide important information for fisheries and conservation managers of Rarotonga and other Pacific Islands to better design rigorous sampling programmes for monitoring the status of reef-top resources, and for evaluating and planning Marine Protected Areas.
269

Community Structure of Cliff-Top Coastal Heathlands in Botany Bay National Park, Sydney

January 1998 (has links)
This thesis examines community structure of cliff-top coastal heathlands in Botany Bay National Park, Sydney. Community properties of floristic composition, structure and species richness are investigated. This investigation is made in order to assess the justification for contemporary pre-emphasis in local studies on individual community properties. It is also made in order to assess the relative and independent contributions of individual properties to variance in overall community structure. It is also made in order to assess the relative utility of multi-property classifications in summarising community structure of cliff-top coastal heathlands. First, the presence of determinable structure in each property is assessed through multivariate classification of respective data sets. Secondly, a new model of community structure is developed in which the hypothesis that community structure is a function of common (shared) and independent (unique) variance in each of the three properties is assessed. This is achieved through application of variance partitioning using correspondence analysis techniques. Thirdly, a matrix combining variance in all three properties is classified. This classification is compared with those of individual properties in order to assess the hypothesis that more ecologically cohesive classifications than those of single properties are obtainable. The ecological significance (environmental relativity) of all classifications and variance components is assessed through examination of relationships with variance in 20 environmental factors which encompass variation in maritime factors, soil physical factors, soil nutrition factors and effects of time since fire. Classifications of individual properties showed the presence of determinable structure in each. Eleven floristic complexes, nine structural complexes and eighteen species richness complexes were recognised. Nineteen community complexes were recognised from the classification of the combined property matrix. All complexes were shown to differ significantly with respect to multiple environmental factors. Variance partitioning showed the presence of both independent and common variance components with respect to properties compared pairwise. These were all shown to differ in magnitude. Examination of environmental correlates showed ecological differentiation of all properties and most variance components. Maritime and fire factors provide a major axis of environmental differentiation for most properties and variance components. A second major axis was resolved with respect to physical soil factors. With the exception of variance in species richness, major soil nutrients were generally of secondary importance to community structure. Low soil nutrients may demarcate heathlands from other vegetation types. However, this study shows elevated importance of other major areas of environment for community structure within cliff-top coastal heathlands. Comparisons of environmental homogeneity characteristics between all classification systems showed the classification of the combined property matrix to be more ecologically robust than those of structure or species richness. Homogeneity characteristics of the combined classification remained statistically inseparable from that of floristic composition. However, studies provided some evidence suggesting greater robustness of the combined classification with regard to fine-scale variance in community structure. This thesis shows that variance in all major community properties of the studied vegetation to be of ecological significance. It also shows that this significance is differential with respect to properties and their variance components. Pre-emphasis on individual properties in syntheses of local systems thus involves the loss of ecological information. I thus conclude that if adequate ecological syntheses of cliff-top coastal heathlands are to be obtained which are appropriate to their scale of distribution and functioning in the Sydney area then inclusion of attributes of multiple properties is required. Equally, multiple sources of environmental variation need to be examined.
270

Dynamic human relationships with wilderness developing a relationship model /

Dvorak, Bob G. January 2008 (has links) (PDF)
Thesis (Ph.D.) -- University of Montana, 2008. / Title from author supplied metadata. Description based on contents viewed on July 6, 2009. Includes bibliographical references.

Page generated in 0.1356 seconds