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	Provedor de dados AgEcon (43) Autor Wilson, Clevo (43) Tisdell, Clement A. (41) Swarna Nantha, Hemanath (11) Frey, Bruno S. (1) Kriwoken, Lorne (1) Merritt, David (1) Swarna Nantha, Swarna (1) Torgler, Benno (1) Mais... Palavra-chave Environmental Economics and Policy (38) Conservation (8) Contingent valuation (7) Tourism (7) Ecotourism (6) Biodiversity (4) Willingness to pay (4) Australia (3) Farm Management (3) Food Consumption/Nutrition/Food Safety (3) Knowledge (3) Lamington National Park (3) Sea Turtles (3) Sea turtles (3) Antarctica (2) Asia (2) Australia’s tropical wildlife (2) Birds (2) Conservation policies (2) Conservation policy (2) Mais... Tipo do documento Working or Discussion Paper (40) Book (1) Report (1) Working Paper (1) Ano 2007 (1) 2005 (6) 2004 (17) 2003 (8) 2002 (3) 2001 (2) 2000 (6) Mais... País United States (43) Idioma Inglês (43)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 43 Primeira ... 1 2 3 ... Última Knowledge and Willingness to Pay for the Conservation of Wildlife Species: Experimental Results Evaluating Australian Tropical Species AgEcon Tisdell, Clement A.; Wilson, Clevo. The nature of an experiment involving 204 residents is outlined and the results are reported and analysed. Two consecutive surveys of the respondents provide data about their stated knowledge of 23 wildlife species present in tropical Australia, most of which exclusively occur there. In addition, these surveys provide data about the willingness of respondents to pay for the conservation of those species belonging to three taxa; reptiles, mammals, and birds. Thus it is possible to compare the respondents’ stated knowledge of the species with their willingness to pay for their conservation, and to draw relevant inferences from this. From the initial survey and these associations, interesting relationships can be observed between those variables (knowledge... Tipo: Working or Discussion Paper Palavras-chave: Conservation policies; Knowledge and willingness to pay; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/51293 Why farmers continue to use pesticides despite environmental health and sustainability costs AgEcon Wilson, Clevo; Tisdell, Clement A.. Use of chemical inputs such as pesticides have increased agricultural production and productivity. However, negative externalities, too, have increased. The externalities include damage to the environment, agricultural land, fisheries, fauna and flora. Another major externality has been the unintentional destruction of beneficial predators of insects which has led to a virulence of many species of agricultural pests. Mortality and morbidity among agricultural workers, especially in developing countries from exposure to pesticides, are also common. The costs from these externalities are large and affect farmers’ returns. However, despite these high costs, farmers continue to use pesticides and in increasing quantities. In this paper, we examine this... Tipo: Working or Discussion Paper Palavras-chave: Pesticides; Agriculture; Environment; Human health; Sustainability; Hysteresis; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety. Ano: 2000 URL: http://purl.umn.edu/48363 Open-Cycle Hatcheries, Tourism and Conservation of Sea Turtles: Economic and Ecological Analysis AgEcon Tisdell, Clement A.; Wilson, Clevo. Considers the role that tourism-based sea turtle-hatcheries can play in conserving populations of sea turtles by combining economic analysis of markets with ecological parameters. Background is provided on the nature and development of such hatcheries in developing countries, giving particular attention to Sri Lanka. The modelling provided helps with the assessment of the impacts of turtle hatcheries on the conservation of sea turtles and enables ecological consequences of tourism, based on such hatcheries, to be better appreciated than in the absence of such modelling. The results demonstrate that sea turtle hatcheries that operate for tourist purposes can make a positive contribution to sea turtle conservation, but this depends on the manner in which... Tipo: Working or Discussion Paper Palavras-chave: Ecological economics; Nature conservation; Sea turtles; Ranching; Developing countries; Sri Lanka; Sea turtle hatcheries; Tourism; Environmental Economics and Policy. Ano: 2003 URL: http://purl.umn.edu/48959 Dynamic Processes in Contingent Valuation: A Case Study Involving the Mahogany Glider AgEcon Tisdell, Clement A.; Wilson, Clevo; Swarna Nantha, Hemanath. This paper reports the results of an experiment involving a sample of 204 members of the public who were assessed on three occasions about their willingness to pay for the conservation of the mahogany glider. They were asked this question prior to information being provided to them about the glider and other focal wildlife species; after such information was provided, and finally after participants had had an opportunity to see live specimens of this glider. The mean willingness to pay of the relevant samples are compared and found to show significant variations. Theories are considered that help explain the dynamics of these variations. Serious concerns are raised about the capacity of information provision to reveal ‘true’ contingent valuations of public... Tipo: Working or Discussion Paper Palavras-chave: Awareness; Contingent valuation; Dynamic processes; Experiential learning; Information; Wildlife; Willingness to pay; Environmental Economics and Policy; D83; D84; Q51; Q57. Ano: 2004 URL: http://purl.umn.edu/51414 Knowledge of Birds and Willingness to Pay for their Conservation: An Australian Case Study AgEcon Wilson, Clevo; Tisdell, Clement A.. This case study concentrates on the extent of knowledge of members of the Australian public of Australia’s tropical bird species and their willingness to pay for their conservation. In order to place this issue in context, it first provides background information on the status of Australian bird species, focusing attention on species that occur in tropical Australia. Then, using survey results, this study considers the hypothesis that the public’s relative support for the conservation of different bird species depends on its comparative knowledge of their existence and status. Based on experimental results from a sample of residents of Brisbane, Queensland (Australia), it is found that their knowledge of bird species that occur exclusively in the... Tipo: Working or Discussion Paper Palavras-chave: Willingness to pay; Conservation; Australian birds; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/48977 Conservation and Economic Benefits of Wildlife-based Marine Tourism: Sea Turtles and Whales as Case Studies AgEcon Wilson, Clevo; Tisdell, Clement A.. Tourism development can have positive and/or negative impacts on wildlife. However, if tourism is developed in accordance with the basic tenets of wildlife tourism such an activity can be sustainable and can aid the conservation of species. Based on two case studies in Queensland, Australia, this article outlines the various economic and conservation benefits arising from wildlife-based tourism. Some of the benefits are direct, such as tangible economic benefits, others are less tangible, such as increased visitors’ willingness to pay in principle for the conservation of species. Wildlife-based tourism is shown to foster political support for the conservation of species utilized for such tourism by various mechanisms. Non-consumptive uses of wildlife are... Tipo: Working or Discussion Paper Palavras-chave: Ecotourism; Sea turtles; Whales; Economic and conservation benefits; Environmental Economics and Policy. Ano: 2002 URL: http://purl.umn.edu/48734 A Study of the Impact of Ecotourism on Environmental Education and Conservation: The case of Turtle Watching at an Australian Site AgEcon Tisdell, Clement A.; Wilson, Clevo. The importance of environmental education as a component of ecotourism is highlighted. The extent of environmental education and its impact on attitudes to conservation of sea turtles and actions by ecotourists to support such conservation as a result of their visits to Mon Repos Conservation Park (Queensland), an important marine turtle rookery, is examined. To do this, results from 519 usable survey forms completed by ecotourists are analysed. It is found that a considerable amount of environmental education is obtained by visitors and that this has positive and statistically significant impacts on their desire to protect sea turtles and their intended actions to do so. The importance of the interaction of tourists with wildlife as a contributor to... Tipo: Working or Discussion Paper Palavras-chave: Ecotourism; Environmental education; Sea turtles; Sustainable tourism; Wildlife conservation; Environmental Economics and Policy. Ano: 2000 URL: http://purl.umn.edu/48365 Conflicts over natural resources and the environment: Economics and Security AgEcon Wilson, Clevo; Tisdell, Clement A.. None Tipo: Working Paper Palavras-chave: Natural Resource conflict; Economic security; Shared resources; Asia; Environmental Economics and Policy; Resource /Energy Economics and Policy. Ano: 2003 URL: http://purl.umn.edu/145100 Antarctic Tourists: A Case Study of Their Evaluation of Antarctic Wildlife and Environmental Issues AgEcon Tisdell, Clement A.; Wilson, Clevo; Kriwoken, Lorne. Reports the results of surveys of Antarctic cruise ship passengers on the ‘Akademik Ioffe’ who undertook their Antarctic journey in January 2003. The prime purposes of the surveys were to determine the socio-economic profile of these travellers, evaluate the importance of Antarctic wildlife for their travel, their attitude to Antarctic wildlife conservation as well as environmental issues involving Antarctica, both prior to their tourist visit to Antarctica and following it. This paper reports on the socio-economic profile of respondents, their willingness to pay for their Antarctic trip, and their knowledge of Antarctica. The comparative importance of Antarctic wildlife as a factor motivating respondents to undertake their journey is assessed and the... Tipo: Working or Discussion Paper Palavras-chave: Antarctic wildlife conservation; Environmental issues; Willingness to pay; Antarctica; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/48980 OLS and Tobit Estimates: When is Substitution Defensible Operationally? AgEcon Wilson, Clevo; Tisdell, Clement A.. Field data are used to illustrate that, other things constant, regression results using Ordinary Least Squares (OLS) converge to Tobit estimates as the number of zeros in the regressand decrease. Tobit estimates are theoretically superior to OLS estimates when using censored data. However, if little difference exists between OLS and Tobit estimates, OLS may be operationally acceptable. OLS may even be optimal in a bounded rationality sense because the extra cost of using Tobit analysis may be less than the extra benefits from a very slight increase in accuracy. Tipo: Working or Discussion Paper Palavras-chave: Bounded rationality; Censored data; Ordinary Least Squares; Tobit; Regressand; Willingness to pay studies.; Public Economics. Ano: 2002 URL: http://purl.umn.edu/90519 Conflicts over Natural Resources and the Environment: Economics and Security AgEcon Wilson, Clevo; Tisdell, Clement A.. None Tipo: Working or Discussion Paper Palavras-chave: Natural Resource Conflict; Shared Natural Resources; Asia; Economic Security; Resource /Energy Economics and Policy. Ano: 2003 URL: http://purl.umn.edu/48967 Economic, Educational and Conservation Benefits of Sea Turtle Based Ecotourism: A Study focused on Mon Repos AgEcon Tisdell, Clement A.; Wilson, Clevo. Tipo: Working or Discussion Paper Palavras-chave: Sea turtle based ecotourism; Conservation; Environmental Economics and Policy. Ano: 2000 URL: http://purl.umn.edu/55110 Breeding and feeding pigs in Australia and Vietnam AgEcon Tisdell, Clement A.; Wilson, Clevo. This report establishes that ACIAR Research Project AS2/1994/023, ‘Breeding and feeding pigs in Australia and Vietnam’ (supported by ACIAR from July 1995 to the end of 2000) has yielded an extraordinarily high rate of economic return on the funds invested. The collaborating agencies were the Department of Primary Industries, Queensland, James Cook University and The University of Queensland in Australia, and the Institute of Agricultural Sciences of South Vietnam in Vietnam. The best estimate benefit–cost ratio for investment in this project is at least 159:1 with a corresponding internal rate of return of 900% and a net present value of A$496 million. This is a total value, not an annual value. To give context to the number A$496 m, in 2000, 1.3 million... Tipo: Book Palavras-chave: Pig; Vietnam; Australia; Breeding; Feeding; High rate of return; High impact; High economic return; DPI QLD; James Cook University; University of QLD; Institute of Agricultural Sciences of South Vietnam; Benefit-cost ratio; Net present value; Internal rate of return; Significant returns; Genetic; Nutrition; Pork; Agribusiness; Farm Management; Food Consumption/Nutrition/Food Safety; International Development; Livestock Production/Industries; Production Economics. Ano: 2001 URL: http://purl.umn.edu/47695 Empirical Evidence Showing The Relationships Between Three Approaches For Pollution Control AgEcon Wilson, Clevo. Willingness to pay models have shown the theoretical relationships between the contingent valuation, cost of illness and the avertive behaviour approaches. In this paper, field survey data are used to compare the relationships between these three approaches and to demonstrate that contingent valuation bids exceed the sum of cost of illness and the avertive behaviour approach estimates. The estimates provide a validity check for CV bids and further support the claim that contingent valuation studies are theoretically consistent. Tipo: Working or Discussion Paper Palavras-chave: Avertive Behaviour; Contingent Valuation; Cost of Illness; Willingness to Pay; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety. Ano: 2002 URL: http://purl.umn.edu/48952 An Initial Assessment of Policies for Saving a Rare Australian Glider: Experimental Results, Economics and Ecology AgEcon Tisdell, Clement A.; Wilson, Clevo; Swarna Nantha, Hemanath. Reviews the ecological status of the mahogany glider and describes its distribution, habitat and abundance, life history and threats to it. Three serial surveys of Brisbane residents provide data on the knowledge of respondents about the mahogany glider. The results provide information about the attitudes of respondents to the mahogany glider, to its conservation and relevant public policies and about variations in these factors as the knowledge of participants of the mahogany glider alters. Similarly data is provided and analysed about the willingness to pay of respondents to conserve the mahogany glider. Population viability analysis is applied to estimate the required habitat area for a minimum viable population of the mahogany glider to ensure at least... Tipo: Working or Discussion Paper Palavras-chave: Conservation policies; Contingent valuation; Knowledge; Mahogany glider Petaurus gracilis; Population viability analysis; Social cost-benefit analysis; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/51290 Endangerment and Likeability of Wildlife Species: How Important are they for Proposed Payments for Conservation AgEcon Tisdell, Clement A.; Swarna Nantha, Hemanath; Wilson, Clevo. Examines empirically the relative influence of the degree of endangerment of wildlife species and their stated likeability on individuals’ willingness to pay (WTP) for their conservation. To do this, it utilises data obtained from the IUCN Red List and likeability and WTP data obtained from two serial surveys of a sample of the Australian public who were requested to assess 24 Australian wildlife species in each of three animal classes: mammals, birds and reptiles. Between the first and second survey, respondents were provided with extra information about the focal species. This information resulted in the clear dominance of endangerment as the major influence on the WTP of respondents for the conservation of the focal wildlife species. Our results throw... Tipo: Working or Discussion Paper Palavras-chave: Conservation of wildlife species; Contingent valuation; Endangerment of species; Likeability of species; Willingness to pay.; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/51419 Attitudes to entry fees to national parks: results and policy implications from a Queensland case study AgEcon Wilson, Clevo; Tisdell, Clement A.. Examines visitor attitudes and whether visitors are willing to pay to enter Lamington National Park and under what circumstances they would do so. First a sample of visitors is asked a general (normative) question as to whether visitors should pay to visit Lamington National Park and in another question (positive) they are asked whether they would be more willing to pay if the money collected would be invested in the park to improve visitor facilities and for conservation work. The results show that visitors are more willing to accept the ‘user-pays’ principle if the money will be used for the benefit of the national park and its visitors. It was found that foreigners are more in support for a ‘user-pay’ fee than Australians, and among Australians, those... Tipo: Working or Discussion Paper Palavras-chave: Entry fees; National parks; Overseas and Australian visitors; Attitudes to ‘user-pays’ principle; Lamington National Park; Policy implications; Conservation benefits; Environmental Economics and Policy. Ano: 2003 URL: http://purl.umn.edu/48960 A Report on the Management of Saltwater Crocodiles (Crocodylus porosus) in the Northern Territory: Results of a Survey of Pastoralists AgEcon Tisdell, Clement A.; Wilson, Clevo; Swarna Nantha, Hemanath. The management of saltwater crocodiles (Crocodylus porosus) in the Northern Territory is an important component of the State’s wildlife management policy. It encompasses saltwater crocodile control (the removal of problem crocodiles dangerous to humans and livestock), and the regulation of harvesting, farming and ranching of saltwater crocodiles for the production of commercial products. The distribution of saltwater crocodiles and their habitats often extend onto private and communal lands along the coastal belt of the Northern Territory, and therefore are a concern of landholders both Aboriginal and pastoral. This report presents the findings of a study of managers of Northern Territory cattle properties (pastoralists). Their attitudes are surveyed... Tipo: Working or Discussion Paper Palavras-chave: Saltwater Crocodiles; Environmental Economics and Policy. Ano: 2005 URL: http://purl.umn.edu/55089 Developing Ecotourism for the Survival of Sea Turtles AgEcon Tisdell, Clement A.; Wilson, Clevo. Discusses generally why humans should bother to conserve sea turtles. In doing so, it considers both economic and non-economic reasons and outlines threats to the existence of sea turtles and ways in which tourism may either contribute to the conservation or decline of their populations. Turtle-based ecotourism at Mon Repos in southern Queensland is described. As a result of a survey conducted by the authors, it is shown that turtle-based ecotourism at Mon Repos has positive social (indirect) consequences for the conservation of sea turtles. Furthermore, it is argued that ecotourism operations at Mon Repos have positive direct impacts on the sustainability of populations of sea turtles. However, using a simple model, it is demonstrated that this impact is... Tipo: Working or Discussion Paper Palavras-chave: Biodiversity; Economics; Ecotourism; Sea Turtles; Sustainable Tourism; Wildlife Conservation.; Environmental Economics and Policy. Ano: 2000 URL: http://purl.umn.edu/48008 Economics, Wildlife Tourism and Conservation: Three Case Studies AgEcon Tisdell, Clement A.; Wilson, Clevo. SUMMARY This report presents the results of an economics component of the National Interdisciplinary Project (NIP) on wildlife tourism in Australia. Objectives of Study The main objectives of the study were: • to outline and assess the role that economics can play in the valuation and management of wildlife-based tourism; • to undertake appropriate case studies to highlight the value of economics and its limits in assessing wildlife tourism in each case; • given the importance of nature conservation for sustainable tourism, including for the sustainability of its economic value, take into account relevant environmental issues involved in wildlife tourism; and • to make recommendations on the basis of these studies that will help managers of wildlife... Tipo: Report Palavras-chave: Valuation and management; Wildlife-based tourism; Nature conservation; Environmental Economics and Policy. Ano: 2004 URL: http://purl.umn.edu/51416 Registros recuperados: 43 Primeira ... 1 2 3 ... Última

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