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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.
191

Suitable Habitat Modelling for the Yellow-breasted Chat (Icteria virens virens) in Point Pelee National Park, Canada.

Walker, Jessica Rose January 2012 (has links)
In order for conservation managers to preserve species within an area, an in-depth knowledge of the distributional patterns of focal species within a landscape is required. This is especially true when the species of concern is Threatened or Endangered and conservation of habitat is essential for species preservation. The yellow-breasted chat (Icteria virens virens) is one such species that is listed as Special Concern under the Species at Risk Act of Canada; the virens subspecies meets the criteria for Endangered. Populations within Canada are limited due the bird’s natural range, which extends north into the extreme southern part of Ontario. Point Pelee National Park is one of two strongholds for this species. However, populations within the park have been declining greatly over the past few years with a 70% rate of decline between 1982 and 2008 (n =10, n=3). This decline is likely due to the lack of natural disturbance such as fire, as well as land use change to agriculture and urbanization that has resulted in a decrease of suitable habitat, outside the park. To examine these hypotheses, habitat suitability modelling is a useful tool. It offers conservation managers insight into current distributions of species, especially species of concern. The purpose of this research was to examine environmental variables relating to three bird species and use these variables to model suitable habitat within the study site (Anders Field Complex). In my study, ArcMap 10 was used to model and map suitable habitat within the Anders Field Complex of Point Pelee National Park, as this is the last known nesting grounds for the yellow-breasted chat within the park. The willow flycatcher (Empidonax traillii) and the white-eyed vireo (Vireo griseus) were also studied as they fill a similar niche and therefore strengthen the results of the study. Environmental variables were modeled to predict suitable habitat and therefore predict potential species distribution. The model used predictors such as vegetation composition of breeding territories and nest patch vegetation composition to identify potential suitable habitat within the study site. Results of the models show that there is likely no suitable habitat (0.04 ha) available for the yellow-breasted chat within the complex. Some suitable habitat was available for the willow flycatcher but seemed limited within the study site (4.1 ha), while an absence of available data on nest scale vegetation characteristics rendered modelling of the white-eyed vireo’s habitat moot. Conditions within the Anders Field Complex have succumbed to succession resulting in mature conditions in vegetation structure and composition, as low dense shrub with high herbaceous cover is being replaced with tall thicket with very little ground cover. Height of vegetation has succeeded the requirements of the yellow-breasted chat. These results show that habitat succession and therefore the loss of suitable habitat is a likely factor influencing chat populations within the Anders Field Complex. There are also factors outside the park likely affecting chat distribution including habitat loss and fragmentation at the landscape scale. Management practices, such as the re-introduction of lost mechanisms or processes within the park should focus on a broad-scale ecological approach that considers novel thinking to restoring ecological integrity. Human induced influences including land use change and introduction of exotic species have forever changed conditions within and surrounding the park, therefore restoration should be mindful to new ecosystems, as restoring to past conditions is likely unproductive. Implementing a disturbance regime such as prescribed burnings, is recommended in order to restore a lost mechanism for the renewal of early-successional habitat. Concentrating on restoration of ecosystems and the re-establishment of a shifting mosaic will provide habitat for a plethora of species including the chat, which is legally mandated by law. However, restoring habitat for the chat will likely not result in the increase of chat abundance within the park until factors outside of the park, including habitat loss and fragmentation are rectified.
192

Subalpine revegetation on backcountry campsites near Tuolumne Meadows, Yosemite National Park, California : third year results

Moritsch, Barbara J. 27 April 1992 (has links)
The National Park Service initiated a backcountry campsite restoration project in 1987 to restore native vegetation on severely degraded campsites in three subalpine lake basins in Yosemite National Park. Restoration treatments included soil scarification, transplanting, manual seeding and site protection. Eight of the treated campsites were monitored in 1990 to evaluate changes in percent vegetation cover, species richness and volunteer establishment that had occurred over the three year period beginning prior to treatment application in the summer of 1987, and ending in the summer of 1990. Percent vegetation cover increased slightly across all sampled quadrats ([mean] = 0.71; N = 214) with mean percent cover changes ranging from -0.37 to 4.36 on individual campsites. Three sites had a loss of cover. Percent cover changes differed most among campsites within lake basins. Changes in percent cover did not differ among lake basins or impact strata (barren core, moderately trampled, and peripheral). Transplanting did not appear to be an important influence on changes in percent cover, as cover changes did not differ between planted and unplanted areas. Survival of transplants planted in 1987 was poor (19.2%), but survival of transplants planted in 1988 was higher (70.5%). Species richness increased slightly across all sampled quadrats ([mean] = 0.54 species per quadrat), with species richness changes on campsites ranging from -0.13 to 1.75 species per quadrat. One site had a mean decrease in species richness. Species richness changes differed among campsites, with the largest increases occurring on those campsites that also had the greatest increases in percent cover. Changes in species richness also differed among impact strata, with the largest increases occurring on barren core areas. There were small differences among lake basins, and species richness changes did not differ between planted and unplanted areas. Volunteer establishment occurred on all treated sites. The number of volunteers per site ranged from one to 45, and 29 species were represented. Individual quadrats had from one to four volunteers. Approximately 50% of the volunteers were producing seed, and overall vigor among volunteers was good. Numbers of volunteers per quadrat differed most strongly among campsites. Slight differences were detected among lake basins and impact strata, with numbers decreasing from barren core to peripheral quadrats. Differences in numbers of volunteers per quadrat between planted and unplanted areas were not detected. Soil scarification may enhance increases in cover, species richness and numbers of volunteers. However, the influence of scarification was tested on two sites only, and further study is recommended. The recovery process appeared to be strongly affected by factors operating at the campsite level. For example, sites with the greatest increases in percent cover also had the greatest increases in species richness and the most volunteers. These sites had coarse soils, relatively abundant sunlight and moisture, and were effectively protected from trampling after site treatment. Results indicate revegetation prescriptions should be made on a site-by-site basis. The performances of eleven species used in transplanting or occurring as volunteers were evaluated. Five species, Agrostis humilis, Calamagrostis breweri, Muhlenbergia filifonnis, Trisetum spicatum, and Calyptridium umbellatum show potential as colonizers in unassisted revegetation and may be useful in manual seeding treatments; three species, Calamagrostis breweri, Carex rossii, and Juncus panyi show potential for transplanting and nursery propagation; and two species, Carex spectabilis and Carex straminiformis, require further study to determine their effectiveness in subalpine revegetation treatments. / Graduation date: 1993
193

Drainage of the Logan-Hyde Park-Benson Area, Utah

Flammer, Gordon H. 01 January 1953 (has links)
B. A. Richeverry in his book, Land Drainage and Flood Protection, states that inadequate drainage causes: (1) a public health menace, (2) an animal health menace, (3) lower grade plant life, (4) inadequate soil aeration, (5) lower soil temperatures, (6) shallow root penetration and, therefore, plant suffering in late summer months from effects of drought, (7) poor soil texture and workability, (8) increased surface washing and erosion of land surface, and (9) alkali and saline conditions, other factors such as poorer roads and highways, decreased tax revenues, ets., might be added to this list. The advantages of aequate drainage are absence of these disadvantages. Many public as well as privae benefits are realised from land drainage.
194

A Comparison of Five Stakeholders’ Perceptions of Governance under Ontario Provincial Parks’ Management Model

Buteau-Duitschaever, Windekind C January 2009 (has links)
Governance is widely discussed in various government sectors or agencies such as Health Care and Education and throughout the private sector. Yet, it is only recently that reference to governance with regards to parks and protected areas has come to the for-front within various political and ecological circles. Parks and protected areas are increasingly threatened by climate change and political influences and therefore, there is a current need to assess the design and operations of protected areas so that they can be properly managed for the changes that have and will continue to occur. The current study examined how five stakeholder groups perceived 12 governance factors under Ontario Parks’ management model. Results revealed that Ontario Parks’ management model is perceived as having good levels of governance for all 12 factors by the entire population and within each of the five stakeholder groups. Differences in perception were observed primarily between the Park Staff participants when compared to the Contractor and Local Resident participants
195

Climate Change Impacts on Visitation in National Parks in the United States

Hyslop, Kristine Elizabeth January 2007 (has links)
Tourism is one of the largest industries in the world and it continues to grow at a rapid pace. Tourism is dependent upon weather and climate, particularly the length and quality of the outdoor recreation season for nature-based tourism, since it is directly affected by weather. Indirectly, the natural biophysical resources that outdoor tourism is based upon can also be altered by climate. Thus, climate change has the potential to affect nature-based tourism that takes place in national parks and other protected areas. Of the studies that analyse the impacts of climate change in national parks, the vast majority focus on conservation policy and planning rather than tourism. This study applies a single variable regression analysis technique to empirically evaluate the affects of climate change on the quantity and seasonal patterns of visitation to United States national parks under a range of climate change scenarios for the 2020s, 2050s, and 2080s (The Met Office Hadley Centre CM3 B21 (United Kingdom) and Commonwealth Scientific and Industrial Research Organisation MK2B A11 (Australia) climate models were used for the Alaskan parks, and the National Center for Atmospheric Research PCM B21 (United States) and Centre for Climate Systems Research NIES A11 (Japan) models were used for the contiguous states). Fourteen parks are included in the study, representing 12 different climate regimes across the country and 58% of total visitation to all national parks in the United States in 2005. In general, the number of visits to parks in the northern regions of the country, excluding Alaska, is projected to increase annually, with the majority of increases occurring in the spring and fall shoulder seasons. In Alaska, there is no consistent pattern on an annual basis due to projections being calculated for only the low season (winter) for Denali, and for the high season (summer) for Glacier Bay. Based on these projections, visitation may increase during the low season and decrease during the high season for Alaskan parks. Parks in the south are projected to experience decreased annual visitation as temperatures become uncomfortably hot, particularly under high emissions scenarios. The largest changes in visitation are projected to occur in the 2080s, although some parks may experience noticeable changes as early as the 2020s in particular seasons. Small to moderate changes in visitation (up to 10% annually) are projected with the low emission climate change scenarios, even into the 2080s. Small to large visitation changes (up to 47% annually) are projected using the higher emission climate change scenarios. These visitation changes could lead to the need for substantial management changes in certain US national parks as revenue collected from user fees and operational costs are altered. Additional ecological and social impacts resulting from increased visitation will also need to be critically considered. Where fewer visits are projected, decreased revenue may lead to an inability to properly manage the park. The results of the study can be used by the National Park Service and regional and park managers to plan for visitation changes that might occur as climate change continues over the 21st century.
196

A Comparison of Five Stakeholders’ Perceptions of Governance under Ontario Provincial Parks’ Management Model

Buteau-Duitschaever, Windekind C January 2009 (has links)
Governance is widely discussed in various government sectors or agencies such as Health Care and Education and throughout the private sector. Yet, it is only recently that reference to governance with regards to parks and protected areas has come to the for-front within various political and ecological circles. Parks and protected areas are increasingly threatened by climate change and political influences and therefore, there is a current need to assess the design and operations of protected areas so that they can be properly managed for the changes that have and will continue to occur. The current study examined how five stakeholder groups perceived 12 governance factors under Ontario Parks’ management model. Results revealed that Ontario Parks’ management model is perceived as having good levels of governance for all 12 factors by the entire population and within each of the five stakeholder groups. Differences in perception were observed primarily between the Park Staff participants when compared to the Contractor and Local Resident participants
197

A study of outsourcing performance of park and green land in Kaohsiung

Li, Chiao-ju 26 June 2007 (has links)
The globalization era has brought along fierce competition and fast connection and contact. To ensure national competitiveness, countries all over the world have conducted various reforms on internal operation and the formulation and implementation of policies. Since the 1980¡¦s, the U.K. and the U.S., by adopting new public management theories on the creation of an efficient government, have promoted the privatization of the public sector, the outsourcing of government¡¦s non-core services and the diversification of public facility management. This paper focus on four park and green land in Kaohsiung as to study the object, addressed the outsourcing performance and matching the depth interview method, entrusting the organization, operator, government, carry on concerning the interview of the dilemma and fruit that meets in the privately owned management process of an area run by private capital. Hope by the sorting review of the related cultural heritage, and "the outsourcing business model of partner's direction" of this research development, has the more thorough understanding to an area in Kaohsiung City, provide the actual situation and the suggestion on the policy. Through the review and study of policy implementation of local governments, the author suggests that local governments should create and supports at the partner up, contain the imperfection that the knowledge management, experience spreads to accept. The passive old bureaucrat mindset of the information, don't understand for the job, also cause three harassment of the manufacturer, government, people in contract. This paper basis "the outsourcing business model of partner's direction" to do the policy and the suggestion on the actual situation, providing the manufacturer, government, people with three aspect the outsourcing management model of join force operate.
198

Motivation and Job satisfaction of voluntary interpreters in Taroko National Park

Wu, Shuw-Yu 13 July 2000 (has links)
Reducing high lost ratio of voluntary interpreters can save cost of recruiting and retraining for Taroko National Park¡¦s headquarters. The subjects of the study are the 114 voluntary interpreters in Taroko National Park. The methodologies applied here are, questionnaire and observation. The purpose of the study is to understand the relationship between the motivation of the voluntary interpreters and the job satisfaction of the voluntary interpreters to salve the problem of high lost ratio of voluntary interpreters. The findings of the study are as follows: 1.the motivation is mainly "self-growth". 2.the motivation will be changed with personal character and time passing by. 3. the factors influencing the voluntary interpreters¡¦ job satisfaction are "show loving care and support", "communication and co-operation", "responsibility and training". These factors will effect total satisfaction of voluntary interpreters. According to the findings of the study, proposes the headquarters of Taroko National Park how to provide relative courses, rich the content of work, and pay close attention for voluntary interpreters.
199

The epidemiology and etiology of visitor injuries in Hawaii Volcanoes National Park

Heggie, Travis Wade 12 April 2006 (has links)
The U.S. National Park Service has recognized visitor health and safety as an important component of protected area management. Despite this recognition, research investigating visitor health and safety issues in national parks is lacking. In order to improve the understanding of the factors contributing to visitor injuries, the purpose of this study was to: 1) identify the distribution of injuries in Hawaii Volcanoes National Park, 2) examine the relationship between visitor factors and the severity of visitor injuries in Hawaii Volcanoes National Park, 3) examine the relationship between environmental factors and the severity of visitor injuries in Hawaii Volcanoes National Park, and 4) determine the effectiveness of sign placement and indirect supervision on controlling visitor injuries in the park. Data for this study consisted of 5,947 incident reports recorded in Hawaii Volcanoes between January 1, 1993 and December 31, 2002. The results found that even though 26% of the injuries in the park occur in frontcountry regions, 53% of all visitor injuries took place at the Eruption Site. As well, 130 of the 268 (49%) fatalities occurred on roadway environments and 1,179 of the 1,698 (69%) severe injuries occurred at the Eruption Site. Logistic regression analysis used to examine the relationship between visitor factors and injury severity in Hawaii Volcanoes National Park found that female visitors, visitors wearing minimal footwear and clothing, and visitors carrying no flashlight and minimal drinking water are factors significantly associated with fatal injuries. Visitors wearing minimal footwear and clothing, visitors carrying no flashlight and minimal drinking water, visitors entering restricted areas, visitors with pre-existing health conditions, and visitors aged 50-59 years of age are factors significantly associated with severe injuries. Logistic regression analysis found no built environment factor to be significantly associated with visitor fatalities or severe injuries. However, darkness and rugged terrain were significantly associated with visitor fatalities. Chi-square tests of independence found the combined treatment of sign placement and indirect supervision to have no effect on reducing the frequency and severity of visitor injuries at the Eruption Site.
200

A Study of Liouduai Hakka Cultural Park from an Ecomuseum Theory

Liu, Bai-Ling 27 June 2008 (has links)
The functions of the most of the traditional museums were limited within their buildings to provide indoor activities and to present exhibitions of historical or cultural objects which representing mainly the past authorities. Consequently, they obstruct the preservation on sites for the local cultures. In order to overturn the operation of museums, ¡§New Museum Movement¡¨ based on ¡§popularization,¡¨ ¡§anthropology,¡¨ or ¡§ethnology,¡¨ was started. It deconstructs the central authority and highlights communal heritages. A ¡§living¡¨ museum is built under the ideas of community empowerment, cultural parks and ecomuseums. In 2002, the Construction and Planning Agency, Ministry of the Interior of Taiwan, initiated the ¡§community development plan¡¨ around the country, including Liouduai Hakka Cultural Park, a major construction in Pingtung County. Combining with the ideas of cultural park and ecomuseum, Liouduai Cultural Park will be established as a Hakka community empowerment. This study is baed on the concept of economuseum to exam the possibilities of operating this cultural park by using Delphi and SWOT analysis. This study suggests that the management strategies of Liouduai Cultural Park should include enhancing the power of local resources; developing into a ¡§theme park¡¨ or a ¡§regional park;¡¨ avoiding repetitive Hakka cultural activities; planning Hakka cultural tourism industry on the whole; proposing marketing strategies that feature in Hakka culture; integrating surrounding scenic spots into parts of the park; combining the recently developed MICE industry with the development of Liouduai Cultural Park to create thecultural industry.

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