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| Registros recuperados: 14 | |
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| Smith, Martin D.; Wilen, James E.. |
| This paper examines the joint agro-wildfowl regulation of the Tule Lake National Wildlife Refuge in California. The area is jointly managed by the Bureau of Reclamation for both farming and wildfowl benefits. Production in both sectors has been declining recently, in farming due to nematode and soil pathogen buildup and in wildfowl production due to climax vegetation choking the lake. A novel spatial rotation plan has surfaced to solve both problems. We develop a simple model of the rotation option to identify critical variables and then we estimate some of these using data on lease bids. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2000 |
URL: http://purl.umn.edu/21847 |
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| Sanchirico, James N.; Wilen, James E.. |
| We present a bioeconomic model of a harvesting industry operating over a heterogeneous environment comprised of discrete biological populations interconnected by dispersal processes. The model generalizes the H. S. Gordon [1954]/V. Smith [1968] model of open-access rent dissipation by accounting for intertemporal and spatial "Ricardian" patterns of exploitation. This model yields a simple, but insightful, framework from which one can investigate factors that contribute to the evolution of resource exploitation patterns over space and time. For example, we find that exploitation patterns are driven by biological and fleet dispersal and biological and economic heterogeneity. We conclude that one cannot really understand the biological processes operating in... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Renewable resources; Bioeconomics; Spatial modeling; Metapopulation; Environmental Economics and Policy; Q22; R19. |
| Ano: 2000 |
URL: http://purl.umn.edu/10513 |
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| Uchida, Hirotsugu; Wilen, James E.. |
| Although comanagement is gaining increasing attention as a way to manage fisheries, few studies have attempted to understand quantitatively which factors of comanagement are critical for their success. This study investigates fishery comanagement regimes adopted by coastal fisheries in Japan. Utilizing a wide variety of examples of fishery comanagement nationwide, we search for key rules and measures that underlie traditional, cultural, and social aspects of comanagement. The study focuses on the rules of the game adopted by comanaging groups called fishery management organizations (FMOs). Upon examination of successful fishery comanagement cases, we found two distinctive measures: effort coordination and pooling arrangements. Furthermore, anecdotal... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/9983 |
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| Sanchirico, James N.; Wilen, James E.. |
| This paper employs a spatial and intertemporal model of renewable resource exploitation to investigate the effects of marine reserve creation. The model combines the H. S. Gordon/Vernon Smith hypothesis of a rent dissipation process with Ricardian notions that resources are exploited across space in a pattern dependent upon relative profitabilities. The metapopulation model employed here incorporates modern biological ideas that stress patch heterogeneity, linkages, and dispersal processes between patches. The spatial bioeconomic model is then used to simulate the effects of reserve creation under various ecological structures. We find, under certain parameter configurations and ecological linkages, that there is potential for a "double-dividend" where... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Marine reserves; Spatial and intertemporal modeling; Bioeconomics; Resource /Energy Economics and Policy; C62; Q22; R10. |
| Ano: 1998 |
URL: http://purl.umn.edu/10715 |
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| Homans, Frances R.; Wilen, James E.. |
| Using a new model of markets in regulated open access resources, we illustrate the evolution of a fishery as demand for the product grows. We show that increased demand for fish in its fresh form shortens the fishing season and leads to the development of a market for processed fish. The model allows us to calculate the rent gains from rationalizing the fishery, and we show that much of the rent gains come on the market side as the season lengthens and more fish can be delivered to the higher-valued fresh market. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2000 |
URL: http://purl.umn.edu/21878 |
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| Bicknell, Kathryn; Wilen, James E.; Howitt, Richard E.. |
| This article presents a dynamic bioeconomic model of livestock disease control that is unique in its integration of disease dynamics, inter‐species interaction, control‐induced migration, and individual optimising behaviour. Examination of the first‐order conditions highlights why profit‐maximising producers cannot be expected to eradicate disease. Results from an empirical application of the model confirm that the current mix of policies to control bovine tuberculosis in New Zealand is achieving lower levels of prevalence than would prevail in the absence of a national strategy. These policies do, however, appear to remove some of the individual incentive to control disease. |
| Tipo: Journal Article |
Palavras-chave: International Relations/Trade; Livestock Production/Industries. |
| Ano: 1999 |
URL: http://purl.umn.edu/117214 |
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| Abbott, Joshua K.; Wilen, James E.. |
| A canvass of the resource economics literature of the last thirty years yields a limited number of applications of economic theory to the problems of recreational fishing, especially compared to the depth of contributions to commercial fisheries over this era. This neglect may be linked to the relatively short shrift given to the control of recreational fisheries (relative to commercial fisheries) by fisheries managers in the past. This asymmetry may be justified when recreational takes are sufficiently small to be negligible for the purposes of stock management. However, it has become increasingly clear that recreational mortality, far from being insignificant, is often comparable to or greater than the commercial mortality for many species (Coleman, et... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/6521 |
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| Abbott, Joshua K.; Wilen, James E.. |
| We develop a simple game-theoretic model to explain the production decisions of firms when the production of a marketed good is complementary with the output of an associated good for which no market is available and the output of both goods is regulated by exogenously determined common pool output quotas. This scenario matches that of many fisheries in which regulators attempt to simultaneously manage harvests of targeted species and bycatch of other species through common pool quotas and seasonal closures. Under a competitive equilibrium, individual fishermen fail to fully account for the external effects of their harvest decisions on the season length, leading to excessive discards, drastically shortened seasons, and large shares of un-harvested quota... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource /Energy Economics and Policy. |
| Ano: 2006 |
URL: http://purl.umn.edu/21468 |
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| Sanchirico, James N.; Wilen, James E.. |
| We utilize a spatial bioeconomic model to investigate the impacts of creating reserves on limited-entry fisheries. We find that reserve creation can produce win-win situations where aggregate biomass and the common license (lease) price increase. These situations arise in biological systems where dispersal processes are prevalent and the fishery prior to reserve creation is operating at effort levels in a neighborhood of open-access levels. We also illustrate that using strictly biological criteria for siting reserves (e.g., setting aside the most biological productive areas) will likely induce the most vociferous objections from the fishing industry. In general, we find that the dispersal rate and the degree the patches are connected play a significant... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Fisheries; Limited-entry; Marine reserves; Resource /Energy Economics and Policy; Q22; R10. |
| Ano: 2000 |
URL: http://purl.umn.edu/10487 |
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| Registros recuperados: 14 | |
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