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| Registros recuperados: 22 | |
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| Tainter, Joseph A; USDA Forest Service, Rocky Mountain Research Station; jtainter@fs.fed.us; Allen, T. F. H.; University of Wisconsin-Madison; tfallen@facstaff.wisc.edu; Little, Amanda; University of Wisconsin-Madison; amlittle@students.wisc.edu; Hoekstra, Thomas W; USDA Forest Service, Inventory and Monitoring Institute; thoekstra@fs.fed.us. |
| Energy gain constrains resource use, social organization, and landscape organization in human and other living systems. Changes in energy gain have common characteristics across living systems. We describe these commonalities in selected case studies involving imperial taxation, fungus-farming ants, and North American beaver, and propose a suite of hypotheses for the organization of systems that subsist on different levels of energy gain. Organizational constraints arising from energy gain predict changes to settlement and organization in postcarbon societies. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Roman Empire; Beaver; Complexity; Energy; Energy gain; Fungus-farming ants; Leaf-cutting ants; Living systems; Organization; Renewable resources; Resources; Solar energy. |
| Ano: 2003 |
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| Diop, Bassirou; Blanchard, Fabian; Sanz, Nicolas. |
| This paper deals with the biological, ecological and economic impact of global warming and mangrove habitat availability on the French Guiana shrimp fishery. A dynamic bio-economic model is built by employing a shrimp stock's growth function depending on Sea Surface Temperature (SST) and on mangrove surface. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over 1995–2011. First, two Cobb-Douglas functions, which describe shrimp's natural growth and harvest, are estimated. Then, a Maximum Economic Yield (MEY) harvest rule, based on the optimization of the net present value derived from fishing, is computed. Three management strategies are compared (Closure, Status Quo management, and MEY) under three... |
| Tipo: Text |
Palavras-chave: Renewable resources; Fishery bio-economic model; Global warming; Shrimp; Sea surface temperature; Mangrove. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00455/56672/58537.pdf |
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| Diop, Bassirou; Sanz, Nicolas; Junior Duplan, Yves Jamont; Guene, El Hadji Mama; Blanchard, Fabian; Pereau, Jean-christophe; Doyen, Luc. |
| This paper deals with fishery management in the face of the ecological and economic effects of global warming. To achieve this, a dynamic bioeconomic model and model-based scenarios are considered, in which the stock's growth function depends on the sea surface temperature. The model is empirically calibrated for the French Guiana shrimp fishery using time series collected over the period 1993–2009. Three fishing effort strategies are then compared under two contrasted IPCC climate scenarios (RCP 8.5 and RCP 2.6). A first harvesting strategy maintains the Status Quo in terms of fishing effort. A more ecologically-oriented strategy based on the closure of the fishery is also considered. A third strategy, which relates to Maximum Economic Yield (MEY), is... |
| Tipo: Text |
Palavras-chave: Renewable resources; Fishery bioeconomic model; Climate change; Climate scenarios; Adaptation; Shrimp. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00453/56418/58115.pdf |
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| Abban, E.K.; Teugels, G.G.; Fermon, V.. |
| Renewable natural resources constitute major sources for socioeconomic development of all developing countries, if they can be con-served, developed and sustainably exploited. For its strategic conservation and sustainable exploitation, biodiversity has to be investigated and documented at various levels and in an internationally accepted manner. However, the human and material resources available in the developing countries are insufficient to under-take the necessary studies, while various forces continue to degrade or erode biodiversity; The obvious solution is through collaboration in research and training. |
| Tipo: Proceedings Paper |
Palavras-chave: Biodiversity; Renewable resources; Http://aims.fao.org/aos/agrovoc/c_6502. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/738 |
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| Rister, M. Edward; Sturdivant, Allen W.; Lacewell, Ronald D.; Michelsen, Ari M.. |
| The Rio Grande has headwaters in Colorado, flows through New Mexico, and serves as the United States.–Mexico border in Texas, emptying into the Gulf of Mexico. Snow melt in Colorado and northern New Mexico constitutes the water river supply for New Mexico and the El Paso region, whereas summer monsoonal flow from the Rio Conchos in Mexico and tributaries, including the Pecos River, provides the Rio Grande flow for southern Texas. The region is mostly semiarid with frequent long-term drought periods but is also characterized by a substantial irrigated agriculture sector and a rapidly growing population. International treaties and interstate compacts provide the rules for allocation of Rio Grande waters between the United States and Mexico and among... |
| Tipo: Journal Article |
Palavras-chave: Agriculture; Agricultural economics; Conservation; Irrigation; Natural resources; Renewable resources; Resources; Water; Resource /Energy Economics and Policy; Q5; Q15; Q20; Q25; Q28. |
| Ano: 2011 |
URL: http://purl.umn.edu/113529 |
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| Hrubovcak, James; Vasavada, Utpal; Aldy, Joseph E.. |
| For U.S. agriculture to continue along a sustainable path of economic development, further production increases must be generated by technologies that are both profitable and more environmentally benign. In this context, we assess the role of these green or sustainable technologies in steering agriculture along a more sustainable path. However, the lack of markets for the environmental attributes associated with green technologies can limit their development. In addition, simply making a technology available does not mean it will be adopted. Experience with green technologies such as conservation tillage, integrated pest management, enhanced nutrient management, and precision agriculture demonstrates that even when technologies are profitable, barriers to... |
| Tipo: Report |
Palavras-chave: Sustainable agriculture; Natural capital; Nonrenewable resources; Renewable resources; Environmental services; Green technology; Integrated pest management; Conservation tillage; Enhanced nutrient management; Precision agriculture; Environmental Economics and Policy; Farm Management. |
| Ano: 1999 |
URL: http://purl.umn.edu/33721 |
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| Watts, Myles J.; Shimshack, Jay P.; LaFrance, Jeffrey T.. |
| Livestock grazing on public lands continues to be a source of intense conflict and debate. We analyze this problem using a dynamic game. Low grazing fees let ranchers capture more rent from grazing. This increases the incentive to comply with federally mandated regulations. Optimal grazing contracts therefore include grazing fees that are lower than competitive private rates. The optimal policy also includes random monitoring to prevent strategic learning by cheating ranchers and avoid wasteful efforts to disguise noncompliant behavior. Finally, an optimal policy includes a penalty for cheating beyond terminating the lease. This penalty must be large enough that the rancher who would profit the most from cheating experiences a negative expected net return. |
| Tipo: Working or Discussion Paper |
Palavras-chave: Renewable resources; Public lands grazing policy; Optimal contracts; Land Economics/Use. |
| Ano: 2006 |
URL: http://purl.umn.edu/7151 |
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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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| Registros recuperados: 22 | |
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