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| Registros recuperados: 13 | |
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| Santarelli, L; Gros, Philippe. |
| The totality of French landings of whelk (Buccinum undatum L.) is assignable to the fisheries of the Normand-Breton Gulf, western Channel. The aim of this paper is to forecast economic rent of the potters of the harbour of Granville, as a function of the two main variates open to supervision: the size of the fishing fleet, and the number of whelk-pots per ship. In order to assess the biological and financial consequences of a prospective development, a deterministic model of the fleet-resource system is proposed. Results of simulations emphasize the sharpness of the rent-dissipation problem under existing tendencies. Therefore some recommendations are put forward to derive a fishery policy that would enable the system to be maintained near optimal... |
| Tipo: Text |
Palavras-chave: Gastropoda; Marine mollusks; Fishery management; Economic models; Fishery economics. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-1786.pdf |
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| Hasler, Berit; Jensen, Jorgen Dejgaard; Madsen, Bjarne; Andersen, Martin; Huusom, Henrik; Jacobsen, Lars-Bo. |
| This paper addresses the combination of environmental regulation and rural development using an integrated economic modelling approach. Specifically, the regional impacts of regulating livestock density at the farm level are analysed in a projected 2010 setting. This scenario is motivated by a concern for nitrogen loads on ground and surface water. The applied model framework includes a macroeconomic CGE-model, an econometric agricultural sector model and a local economic model, and consistent links have been established between these models. The analyses show that the largest relative economic impacts occur in the western parts of Denmark. This occurs in the agricultural sector, because the highest livestock densities are found in the western regions, but... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Economic models; Livestock density regulation; Regional impacts; Livestock Production/Industries. |
| Ano: 2002 |
URL: http://purl.umn.edu/24865 |
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| Smith, Kathryn. |
| * The current version of this paper was prepared with the support of the Australian Department of Climate Change and the Environmental Economics Research Hub at the Australian National University. Earlier versions were submitted to the London School of Economics and Political Science in partial completion of the MSc in Environment and Development, and to the 2009 annual conference of the Australian Agricultural and Resource Economics Society (AARES). The author is extremely grateful to Simon Dietz and the Commonwealth Scholarship Commission for supervision and funding of the MSc, respectively, and to Steve Hatfield-Dodds, Frank Jotzo, Jack Pezzey, Matthew Skellern, Daniel Veryard, and participants in seminars at the AARES conference, the Department of... |
| Tipo: Report |
Palavras-chave: Climate economics; Integrated assessment models; Economic models; Social costs.; Environmental Economics and Policy; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy. |
| Ano: 2009 |
URL: http://purl.umn.edu/94888 |
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| Helming, John F.M.; Banse, Martin. |
| The complexity of agri-environmental economic issues is such that a model that is fully consistent at all levels of aggregation and all type of questions to be addressed is not available at the Agricultural Economics Research Institute in the Hague LEI. Such a model is probably also not feasible. At LEI this problem is solved by linking models at different scales of analysis: global economic, national economy-wide, regional agricultural, national spatial and farm levels. This linked model system enlarges scope and consistency of the analysis. The goal of the model linking, however, is not a full integration and, ultimately, simultaneous optimization of the models. Therefore, the different models of the LEI model funnel are often rather loosely linked.... |
| Tipo: Journal Article |
Palavras-chave: Economic models; Combined models; Quantitative policy analysis; Agricultural and Food Policy; Research Methods/ Statistical Methods. |
| Ano: 2008 |
URL: http://purl.umn.edu/97708 |
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| Perrotta, R.G.; Pertierra, J.P.; Viñas, M.D.; Macchi, G.J.; Tringali, L.S.. |
| Both mackerel mean biomass and mean fishing effort in Buenos Aires (Argentina) shelf during the period 1990-91/1994-95 were estimated. Those values were 85,792 t and 42,051 minutes, respectively. However, the best economic profit from the fishery (about $15,390,036)($1=U$S1) was estimated to take place at 28,000 minutes. It was observed a waste in fishing effort of the commercial fleet related with sea surface temperatures of 19°C or more. Moreover, adult mackerel find better trophic conditions on the continental shelf (depth 50m), while larvae originated from massive spawning in late November-early December, i.e., during the main fishing season, find their optimum at lower depths. Mackerel shoals enter and leave fishing grounds in a counterclockwise way... |
| Tipo: Journal Contribution |
Palavras-chave: Mackerel fisheries; Biomass; Catch/effort; Environmental conditions; Economic models; Commercial fishing; Biomass; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_32980. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/2465 |
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| Bartolini, Fabio; Bazzani, Guido Maria; Gallerani, Vittorio; Raggi, Meri; Viaggi, Davide. |
| The objective of this paper is to provide an analysis of the sustainability of irrigated agriculture in Italy in the context of CAP reform and Water Framework Directive. The work combines scenario analysis, multicriteria mathematical programming simulation models and economic, social and environmental indicators. Five irrigated farming systems were considered: cereals, rice, fruit, vegetables and citrus. The results show the diversity of Italian irrigated farming systems and the trade-off between socio-economic and environmental performance. This highlights the need for a differentiated application of the Water Framework Directive, balancing water conservation and rural development objectives. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Water framework directive; Irrigation; Economic models; Sustainability indicators; Scenarios; Land Economics/Use; Resource /Energy Economics and Policy; Q1; Q2; Q25. |
| Ano: 2005 |
URL: http://purl.umn.edu/24518 |
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| Registros recuperados: 13 | |
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