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| Registros recuperados: 82 | |
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| Thebaud, Olivier; Hay, Julien. |
| Le SEM conduit actuellement, en collaboration avec le Centre de Droit et d'Economie de la Mer de l'Université de Bretagne Occidentale, un projet de recherche intitulé "Les pollutions marines accidentelles: évaluations économiques et mécanismes incitatifs de prévention". Ce projet bénéficie d'un financement dans le cadre du Programme National d'Environnement Côtier français, et d'une bourse de thèse de la région Bretagne. L'une des tâches de cette recherche consiste en une analyse rétrospective de la pratique de l'évaluation et de l'indemnisation des dommages suite à des cas passés de marées noires. Une attention particulière est consacrée aux cas entrant dans le cadre du FIPOL, avec un intérêt spécifique pour les pollutions causées par trois accidents... |
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| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00305/41645/40854.pdf |
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| Chaboud, Christian; Thebaud, Olivier. |
| In the past two decades, the French Guyana shrimp fishery has known dramatic evolutions, largely driven by global changes. On the economic side, two major driving factors are the globalization of the shrimp market, with a decreasing trend in real prices, an d the long-term increase in fuel prices worldwide. On the environmental side, recruitment of the two main species of shrimp targeted in the fishery seems to have decreased over the last decade. This decrease is probably related to hydroclimatic modifications linked to global change. It is important to assess the adaptive capacity of the fishery facing such changes, as well as the relevance of past and future public policies to improve this capacity. A key component of this adaptive capacity is the way... |
| Tipo: Text |
Palavras-chave: Bioeconomic modeling; Fishery management; Subsidies; Shrimp; French Guyana. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00243/35473/33988.pdf |
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| Doyen, Luc; Thebaud, Olivier; Bene, Christopher; Martinet, V.; Gourguet, S.; Bertignac, Michel; Fifas, Spyros; Blanchard, Fabian. |
| Academia and management agencies show a growing interest for ecosystem-based fishery management (EBFM). However, the way to operationalize this approach remains challenging. The present paper illustrates how the concepts of stochastic co-viability, which accounts for dynamic complexities, uncertainties, risk and sustainability constraints, can be useful for the implementation of EBFM. In the present case, this concept is used to identify fishing strategies that satisfy both ecological conservation and economic sustainability in a multi-species, multi-fleet context. Economic Viability Analysis (EVA) and the broader Co-Viability Analysis (CVA), are proposed to expand the usual Population Viability Analysis (PVA) and precautionary approach. An illustration is... |
| Tipo: Text |
Palavras-chave: Ecosystem based fisheries management; Viability; Stochastic; Nephrops; Hake. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00074/18571/16153.pdf |
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| Daures, Fabienne; Girard, Sophie; Guyader, Olivier; Kalaydjian, Regis; Kerautret, Sylvie; Le Roux, Johann; Perez, Jose; Thebaud, Olivier. |
| This document presents a survey of the marine-related activities in France, i.e. those of the commercial sector (exploitation of minerai and living resources, manufacturing industries, services) and those of the public sector (Navy, State services, education, safety, marine research). A chapter is devoted to the protection of the coastal and marine environment, and the chapter on tourism gives quantitative data on the impacts of the pollution caused by the Erika oil-tanker. Each activity of the commercial sector is described by key-figures (turnover, value added, employmentl. The description of the non-commercial public sector includes data on costs, including personnel costs. In addition to these figures, qualitative information is given on the recent... |
| Tipo: Text |
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| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/00117/22850/20660.pdf |
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| Mongruel, Remi; Thebaud, Olivier. |
| Most marine aquaculture activities remain strongly dependent on coastal ecosystems. In the case of shellfish farming, this dependency is related mainly to water quality and to the various ecological interactions resulting from the dynamics of coastal food webs. Such ecological constraints have influenced the overall evolution of blue mussel farming in the Mont-Saint-Michel Bay, leading producers to negotiate collective arrangements regarding production capacity and techniques and to develop production strategies at the farm level. This article presents an analysis of the location choices of mussel farmers in the Mont-Saint-Michel Bay based on an empirical investigation conducted in 2002. A typology of farms with respect to their land structure is developed... |
| Tipo: Text |
Palavras-chave: Institutional arrangements; Location choices; Externalities; Economic performance indicators; Blue mussel farming. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/2006/publication-6346.pdf |
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| Gros, Philippe; Biseau, Alain; Fromentin, Jean-marc; Thebaud, Olivier. |
| The report is focused on the research priorities pertaining to the implementation of the ‘maximum sustainable yield’ (MSY) and of the ‘ecosystem approach to fisheries’ (EAF). The MSY is first examined, taking account of its relevance as a management objective, of its link with maximum economic yield (MEY), and of its close relationship with ecosystem productivity and fishing capacity. Related research priorities are identified. In the second part, emphasis is put on EAF, a very challenge for fishery scientists. The extension of fisheries science towards an ecosystem dimension (including human activities) and the integration of uncertainty have opened up large fields of research. Priorities are presented by domain. Five principal areas of knowledge and... |
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| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00013/12408/9194.pdf |
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| Petitgas, Pierre; Ulrich, Clara; Auber, Arnaud; Gourguet, Sophie; Huret, Martin; Mazurais, David; Pernet, Fabrice; Pouvreau, Stephane; Richard, Marion; Servili, Arianna; Thebaud, Olivier; Zambonino Infante, Jose-luis. |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00657/76942/78148.pdf |
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| Herfaut, Johanna; Levrel, Harold; Thebaud, Olivier; Veron, Gerard. |
| In 2006, IFREMER, with the help of the polling institute BVA, implemented a national pilot study of recreational fishing. Taking into account all the different fishing methods, from shellfish gathering to offshore angling, including spear-fishing, this study was designed to provide estimates of (i) the number of recreational fishers in France, (ii) recreational fishing effort; (iii) catches and landings; (iv) the economic impacts of recreational fishing, and to develop a classification of recreational fishers. A two-part method was adopted: a random-digit-dialing (ROD) survey combined with an on-site survey. The data collected from telephone and on-site surveys were compared and then used in combination to provide a reliable estimate of this growing... |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00144/25498/24101.pdf |
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| Blanchard, Fabian; Thebaud, Olivier; Guyader, Olivier; Lorance, Pascal; Boucher, Jean; Chevaillier, Pierre. |
| The populations of fishes dwelling near the sea bed (demersal species) on the continental shelf are usually the object of intense commercial exploitation. The Bay of Biscay shelf is no exception. Hence, populations suffer from this exploitation. Moreover, the general role played by hydro-climatic variations in the regulation of the abundance of demersal fish populations (population dynamics) is traditionally admitted. In the Bay of Biscay, a warming of the surface water has been observed over the three last decades (Koutsikopoulos et al., 1998). Climate change therefore has potential consequences on fish communities. Thus, the structure and dynamics of fish populations on the continental shelf of the Bay of Biscay are susceptible to suffer both from the... |
| Tipo: Text |
Palavras-chave: Modèles individus centrés; Conséquences économiques; Réchauffement climatique; Impact de la pêche; Communautés de poissons. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/rapport-6347.pdf |
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| Martinet, Vincent; Thebaud, Olivier; Doyen, L. |
| This paper develops a formal analysis of the recovery process for a fishery, from crisis situations to desired levels of sustainable exploitation, using the theoretical framework of viable control. We define sustainability as a combination of biological, economic and social constraints which need to be met for a viable fishery to exist. Biological constraints are based on the definition of a minimum resource stock to be preserved. Economic constraints relate to the existence of a guaranteed profit per vessel. Social constraints refer to the maintenance of a minimum size of the fleet, and to the maximum speed at which fleet adjustment can take place. Using fleet size adjustment and fishing effort per vessel as control variables, we first identify the states... |
| Tipo: Text |
Palavras-chave: Bio economic modeling; Fishery policies; Recovery; Sustainable fishing. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3719.pdf |
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| Thebaud, Olivier; Boschetti, Fabio; Jennings, Sarah; Smith, Anthony D.m.; Pascoe, Sean. |
| Biodiversity offsets are increasingly advocated as a flexible approach to managing the ecological costs of economic development. Arguably, however, this remains an area where policy-making has run ahead of science. A growing number of studies identify limitations of offsets in achieving ecologically sustainable outcomes, pointing to ethical and implementation issues that may undermine their effectiveness. We develop a novel system dynamic modelling framework to analyze the no net loss objective of development and biodiversity offsets. The modelling framework considers a marine-based example, where resource abundance depends on a habitat that is affected by a sequence of development projects, and biodiversity offsets are understood as habitat restoration... |
| Tipo: Text |
Palavras-chave: Biodiversity offsets; Compensatory restoration; Cumulative impacts; Habitat-resource interactions; Bio-economic modelling; Social acceptability. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00270/38156/36312.pdf |
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| Marre, Jean-baptiste; Brander, Luke; Thebaud, Olivier; Boncoeur, Jean; Pascoe, Sean; Coglan, Louisa; Pascal, Nicolas. |
| Non-use values (i.e. economic values assigned by individuals to ecosystem goods and services unrelated to current or future uses) provide one of the most compelling incentives for the preservation of ecosystems and biodiversity. Assessing the non-use values of non-users is relatively straightforward using stated preference methods, but the standard approaches for estimating non-use values of users (stated decomposition) have substantial shortcomings which undermine the robustness of their results. In this paper, we propose a pragmatic interpretation of non-use values to derive estimates that capture their main dimensions, based on the identification of a willingness to pay for ecosystem protection beyond one's expected life. We empirically test our... |
| Tipo: Text |
Palavras-chave: Discrete choice experiment; Ecosystem services valuation; Non-use values; Time decay; Willingness to pay. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00244/35564/35398.pdf |
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| Thebaud, Olivier; Innes, James; Norman-lopez, Ana; Slade, Stephanie; Cameron, Darren; Cannard, Toni; Tickell, Sharon; Kung, John; Kerrigan, Brigid; Williams, Lew; Little, L. Richard. |
| An economic survey of the commercial operators currently active in the Queensland Coral Reef Fin-Fish Fishery has been carried out, as part of a research project aimed at evaluating alternative management options for this fishery. This paper presents the background analysis used as a basis to develop the sampling design for this survey. The background analysis focuses on activity patterns of the fleet based on effort and catch information, as well as patterns of quota ownership. Based on this information, a fishing business profile describing the micro-economic structure of fishing operations is developed. This profile, in conjunction with the qualitative information gained in undertaking the economic surveys, allows preliminary understanding of the key... |
| Tipo: Text |
Palavras-chave: Commercial fishing; Queensland Coral Reef Fin-Fish Fishery; Great Barrier Reef; Business structures; ITQs; Diversification. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00250/36166/34749.pdf |
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| Hamon, Katell; Frusher, Stewart; Little, L. Richard; Thebaud, Olivier; Punt, André E.. |
| The rock lobster, Jasus edwardsii, lies on a global “hotspot” for climate change in the southeastern Australian state of Tasmania. The short-term effects of climate change are predicted to lead to an increasing exploitable biomass in the south and declining biomass in the north of the state. The future of the fishery is highly uncertain due to climate change, but also due to insecurities linked to the market conditions. The market for Tasmanian rock lobster is driven by the demand of a single market, China, which absorbs 75 % of the catch. This study examines how fishers can adapt to external perturbations that affect the social and economic viability of the fleet and the ecological dynamics of the stock. Three fleet dynamic models of increasing complexity... |
| Tipo: Text |
Palavras-chave: Tasmanian rock lobster; Fleet dynamics; Fishers behaviour; Climate change. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00171/28219/27542.pdf |
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| Registros recuperados: 82 | |
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