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| Registros recuperados: 4.150 | |
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| Greenville, Jared W.; MacAulay, T. Gordon. |
| The use of protected areas as a fishery management tool has been suggested as a hedge against management failures and variation in harvests. A stochastic bioeconomic model of a two-species fishery will be used to test the performance of protected areas as a management tool in a fishery with heterogenous environments. Protected areas are analysed under density-dependent and sink-source dispersal relationships between environments within the fishery. Differing levels of management control over fishery resource extraction are analysed. The model is applied to Manning Bioregion in NSW. The focus of the study is placed on the biological and institutional characteristics that yield benefits to the fishery. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21469 |
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| Crowe, Bronwyn; White, Benedict. |
| Conservation and restoration of native vegetation is often a gradual process which may require many years to transform an ecosystem from one vegetative state to a target ecosystem. This process is stochastic, with some changes potentially irreversible. In contrast, contracts with landholders to undertake conservation measures on their property are typically for less than ten years and often make no contingencies for re-contracting at the end of the contract period. The risk to land holders and conservation agencies of contracts not being renewed and the consequent potential loss of previous investment means including covenants in conservation contracts may be attractive to both parties. A model is developed to empirically examine the optimal dynamic... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: POMDP; Biodiversity; Contracts; Monitoring; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/9457 |
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| Conrad, Jon M.. |
| A simple bioeconomic model was specified and estimated for the central subpopulation of the northern anchovy (Engraulis mordax). Net population growth was described by a power function and harvest by the U. S. reduction fleet was modelled by an exponential production function. When incorporated into a bioeconomic model they allowed the derivation of two explicit functions, Y = Ö(X) and Y = Ø(X) which could be used to depict the bioeconomic optimum. The roots of Ö(X) have important economic interpretations and can be used to characterize the economic status of the fishery. The positively-sloped segment of the Ö(X) curve may be used as an approximately-optimal adaptive management policy. For the set of bioeconomic parameters circa 1990, anchovy biomass... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 1991 |
URL: http://purl.umn.edu/7266 |
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| Silva, Ana Maria Navaes Da; Albuquerque, Jose de Lima; Silva, Elizandro Souza Da; Santos Filho, Demorval Dos; Barbosa, Waldinilson Barros. |
| Situado na Zona da Mata pernambucana, o município de Tracunhaém tem como principal atividade econômica a cerâmica artesanal. A arte ceramista do município conta com renomados artistas, o que faz da cidade um dos maiores centros de excelência na arte da modelagem do barro no país. Pernambuco abriga parte de dois biomas importantíssimos para a biodiversidade do planeta, a Mata Atlântica e a Caatinga, apresenta preocupante estado de degradação ambiental.Os impactos variam desde pequenos focos de desmatamentos, até áreas em processo de desertificação. Este trabalho analisa a demanda por biomassa florestal pelos artesãos de Tracunhaém, em Pernambuco. As atividades desenvolvidas pelos artesãos apresentam um grande potencial impactante, pois além de utilizarem a... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Biomassa florestal; Artesão; Consumo de lenha; Energia renovável; Forest biomass; Craftsman; Consumption of firewood; Renewable energy; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/109606 |
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| Bella, Giovanni. |
| A model of different species competing for the same environment is presented, and possible explanations of peaceful coexistence or rather internecine conflicts are consequently derived. By means of a Lotka-Volterra dynamic system we describe the evolution of two populations (bees and locusts) that differently approach the management of those natural resources they contend for, and thus make a simple parable of todays societies playing the current environmental scenario. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/10269 |
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| Kuster, Robert; Ellersdorfer, Ingo; Fahl, Ulrich. |
| The paper establishes a CGE/MPSGE model for evaluating energy policy measures with emphasis on their employment impacts. It specifies a dual labor market with respect to qualification, two different mechanisms for skill specific unemployment, and a technology detailed description of electricity generation. Non clearing of the dual labor market is modeled via minimum wage constraints and via wage curves. The model is exemplarily applied for the analysis of capital subsidies on the application of technologies using renewable energy sources. Quantitative results highlight that subsidies on these technologies do not automatically lead to a significant reduction in emissions. Moreover, if emission reductions are achieved these might actually partly result from... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/12035 |
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| Registros recuperados: 4.150 | |
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