Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados Genet. Mol. Biol. (11) ArchiMer (8) Naturalis (6) OceanDocs (2) OMA (1) Biological Sciences (1) Acta Botanica (1) Anais da ABC (AABC) (1) Biota Neotropica (1) Neotropical Ichthyology (1) Rev. Bras. Bot. (1) RChHN (1) Mais... Autor Renesto,Erasmo (7) Arntzen, J.W. (4) Zawadzki,Cláudio H. (4) Boudry, Pierre (2) Cimmaruta, R (2) Del Lama,Marco Antonio (2) García-París, M. (2) Nascetti, G (2) Peres,Maria Dolores (2) Abad-Franch,Fernando (1) Aldinucci, A (1) Artoni,Roberto F. (1) Beardmore, J.A. (1) Bondanelli, P (1) Bonhomme, Francois (1) Boraschi,Daniele (1) CUENCA,ARGELIA (1) Canestrelli, D. (1) Carvalho,Dulcinéia de (1) Chaieb, O. (1) Mais... Palavra-chave Allozymes (35) Population genetics (5) Genetic variability (4) Heterozygosity (4) Genetic distance (3) Genetic diversity (3) Loricariidae (3) MtDNA (3) 42.82 (2) Alytes (2) Biogeography (2) DNA (2) Fish genetics (2) Genetic structure (2) Genetic variation (2) Hétérozygotie (2) Midwife toads (2) Molecular systematics (2) Morphometry (2) Neoplecostominae (2) Mais... Tipo do documento Info:eu-repo/semantics/article (17) Text (8) Article / Letter to the editor (6) Info:eu-repo/semantics/other (1) Journal Contribution (1) Journal article (1) Theses and Dissertations (1) Mais... Ano 2017 (1) 2016 (1) 2013 (2) 2011 (2) 2010 (1) 2009 (4) 2008 (3) 2007 (2) 2006 (2) 2005 (5) 2004 (2) 2003 (3) 2002 (2) 2000 (1) 1999 (1) 1997 (1) 1995 (1) 1984 (1) Mais... País Brazil (17) France (8) Netherlands (6) Belgium (3) Chile (1) Idioma Inglês (26) Francês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 109 Primeira ... 1 2 3 4 5 6 ... Última Marine Protected Areas in Fisheries Management AgEcon 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. The model is applied to Manning Bioregion in NSW. Protected area performance as a tool for fisheries will be analysed given the existing management arrangement. The focus of the study is placed on the biological and economic characteristics that yield benefits to the fishery. Tipo: Conference Paper or Presentation Palavras-chave: Fisheries; Fisheries management; Bioeconomics; Marine protected areas; Resource /Energy Economics and Policy; Q2; Q22; Q28; Q57. Ano: 2006 URL: http://purl.umn.edu/25532 Integration of biological, economic and sociological knowledge by Bayesian belief networks: the interdisciplinary evaluation of potential Baltic salmon management plan AgEcon Levontin, Polina; Kulmala, Soile; Haapasaari, Paivi; Kuikka, Sakari. There is a growing need to evaluate fisheries management plans in a comprehensive interdisciplinary context involving stakeholders. In this paper we demonstrate a probabilistic management model to evaluate potential management plans for Baltic salmon fisheries. The analysis is based on several studies carried out by scientists from respective disciplines. The main part consisted of biological and ecological stock assessment with integrated economic analysis of the commercial fisheries. Recreational fisheries were evaluated separately. Finally, a sociological study was conducted aimed at understanding stakeholder perspectives and potential commitment to alternative management plans. In order to synthesize the findings from these disparate studies a Bayesian... Tipo: Conference Paper or Presentation Palavras-chave: Baltic salmon; Bio-economic modelling; Bayesian Belief Network; Expert knowledge; Fisheries management; Commitment and implementation uncertainty; Management plan; Recreational fisheries; Stakeholders.; Resource /Energy Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/59093 Marine Reserves Switching under Uncertainty AgEcon Yamazaki, Satoshi. This paper analyses a fisheries management strategy, marine reserves switching, in which a non-fishing area is created, removed, or rotated from one site to another according to economic criteria through time. Using a dynamic optimisation framework under uncertainty, with the different fish dispersal processes, the optimal switching strategy and density distributions of the biomass, harvest, and net profit are simulated and compared under different management scenarios. This study will provide a decision and modelling framework for the design of marine reserves to achieve desired management goals. Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic model; Fisheries management; Marine reserves; Uncertainty; Resource /Energy Economics and Policy; Risk and Uncertainty; Q22. Ano: 2008 URL: http://purl.umn.edu/6003 Ignoring the Multi-species Aspect of Labor Supply Decisions in Spatially Explicit Bio-economic Fishery Models AgEcon Stafford, Tess. This paper analyzes the bias associated with ignoring the multi-species aspect of labor supply decisions in spatially explicit bioeconomic fishery models. Recent advancements have been made to simultaneously model the biology of a marine species and the strategic behavior of harvesters over both time and space in order to more accurately predict the effect of regulatory policies on harvester effort and resource population. These models assume a nested choice structure in which the harvester first faces a dichotomous decision between fishing for the target species or not on a given day and then chooses a location to fish conditional on participation. This structure implicitly groups all non-target species options together in the first nest forcing... Tipo: Article Palavras-chave: Multi-species fisheries; Labor supply; Fisheries management; Environmental Economics and Policy; Resource /Energy Economics and Policy. Ano: 2012 URL: http://purl.umn.edu/124367 Protected areas in fisheries: a two-patch, two-species model AgEcon Greenville, Jared W.; MacAulay, T. Gordon. The use of marine 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 hypothetical predator–prey fishery is used to test the performance of protected areas in a fishery with heterogenous environments. Protected areas are analysed under density-dependent and sink-source dispersal relationships between the subpopulations that occur within the fishery. Differing management structures governing resource extraction are analysed. The focus of the study is placed on the biological and management characteristics that yield benefits to both fishers and society. It is shown that the establishment of a protected area improves fishery rent and lowers... Tipo: Journal Article Palavras-chave: Bioeconomics; Fisheries management; Marine protected areas; Resource /Energy Economics and Policy. Ano: 2006 URL: http://purl.umn.edu/116924 An Optimization Model for the Banana Northern Prawn Fishery AgEcon Valle de Souza, Simone; Gondro, Cedric; Cacho, Oscar J.. This study presents an optimal control model of the Banana Northern Prawn Fishery, one of the most important fisheries in Australia. The life cycle of this species involves migration between the sea, where the catch takes place, and the estuary, where post-larvae and juveniles develop. The model combines a stage-matrix population dynamics model and an economic model of sustainable catch. The controls involve the amount of effort allowed and the length of the fishing season. Life stages are defined in terms of prawn size, allowing catch revenue to be adjusted to the expected proportion of specific sized classes caught in a particular month of the year, hence providing a more realistic projection of profits when price is influenced by size. The model is... Tipo: Conference Paper or Presentation Palavras-chave: Fisheries management; Australia; Optimal control; Profit maximisation; Banana prawns.; Resource /Energy Economics and Policy. Ano: 2010 URL: http://purl.umn.edu/59173 Bioeconomic analysis of protected area use in fisheries management AgEcon Greenville, Jared W.; MacAulay, T. Gordon. Protected areas in fishery management have been suggested to hedge management failures and variation in harvests. In this paper, a stochastic bioeconomic model of a two-species fishery in the Manning Bioregion is used to test the performance of protected areas as a management tool in a fishery. The establishment of a protected area is analysed under the assumption of heterogenous environments that are linked via density-dependent or sink-source stock dispersal relationships. The sensitivity of the results to different degrees of management is also explored. The model is applied to the Ocean Prawn Trawl, and Ocean Trap and Line fisheries within Manning Bioregion in New South Wales, Australia. The focus of the study is placed on the biological and... Tipo: Article Palavras-chave: Bioeconomics; Fisheries management; Marine protected areas; Resource /Energy Economics and Policy. Ano: 2007 URL: http://purl.umn.edu/118521 Modelling an ITQ Scheme in the Galapagos Marine Reserve Spiny Lobster Fishery AgEcon Alvear, Santiago A. Bermeo. This paper assesses the distributional and economic impacts resulting from a hypothetical individual quota management system in the Galápagos spiny lobster fishery. Using data from the Fisheries Monitoring Programme, an implicit function is derived and evaluated at a total allowable catch to estimate an equilibrium price for quota. By comparing this with each vessel-owner's implicit quota price, the number of fishers who will have an economic incentive to sell quota is estimated. The outcomes of the model indicate that the equity implications, as well as the economic benefits, resulting from the introduction of an ITQ system would be significant. Tipo: Conference Paper or Presentation Palavras-chave: Galapagos Marine Reserve; Fisheries management; Spiny lobster; ITQs; Resource /Energy Economics and Policy. Ano: 2006 URL: http://purl.umn.edu/31973 Equilibrium management of fisheries with altruistic overlapping generations AgEcon Ekeland, Ivar; Karp, Larry S.; Sumaila, Ussif Rashid. We imbed a classic fishery model, where the optimal policy follows a Most Rapid Approach Path to a steady state, into an overlapping generations setting. The current generation discounts future generations’ utility flows at a rate possibly different from the pure rate of time preference used to discount their own utility flows. The resulting model has non-constant discount rates, leading to time inconsistency. The unique Markov Perfect equilibrium to this model has a striking feature: provided that the current generation has some concern for the not-yet born, the equilibrium policy does not depend on the degree of that concern. Tipo: Working Paper Palavras-chave: Fisheries management; Sustainable development; Renewable resources; Time inconsistency; Hyperbolic discounting; Production Economics; Q01; Q22; C 61. Ano: 2011 URL: http://purl.umn.edu/123635 Registros recuperados: 109 Primeira ... 1 2 3 4 5 6 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco