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| Registros recuperados: 40 | |
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| Le Floc'H, Pascal; Murillas, Arantza; Aranda, Martin; Daures, Fabienne; Fitzpatrick, Mike; Guyader, Olivier; Hatcher, Aaron; Macher, Claire; Marchal, Paul. |
| A survey of past and existing management measures applied to different fisheries in European Western Waters is analyzed as a typology of co-management between governments and stakeholders. Faced with increasing constraints on accessing fish stocks, management measures have evolved toward fishing rights individualization, limited access and various other specific measures. Restrictions on access have changed fishermen’s behaviour in several significant ways. A comparative analysis, based on qualitative data collected through interviews and focus groups, is developed for fisheries from the following European countries: France, Ireland, Spain and the United Kingdom. Past and existing individual harvesting rights in the four countries are reviewed and compared. |
| Tipo: Text |
Palavras-chave: Management; Fishery governance; Common Fishery Policy (CFP). |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00248/35912/34455.pdf |
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| Macher, Claire; Bailly, Denis; Ballesteros, Marta; Bertignac, Michel; Collocas, Francesco; Fitzpatrick, Mike; Frangoudes, Katia; Garcia, Dorleta; Kraan, Marloes; Little, Rich; Mardle, Simon; Murillas, Arantza; Pawlowski, Lionel; Philippe, Manuelle; Prellezo, Raul; Sabatella, Evelina; Steins, Nathalie; Thebaud, Olivier; Ulrich, Clara. |
| Implementation of Ecosystem Based Management in fisheries has led to higher integration of knowledge in advices and higher engagement of stakeholders in the decision support Process. As part of the process, fisheries scientists contribute in different ways and at different levels to decision support and experienced partnership approaches in the context of research projects or institutional decision support. Role of scientists in the process is however not trivial to define and operationalize. Several pitfalls can occur that scientists may have experienced through partnership projects or in the expert assessments done for authorities. A workshop was organized from 15 to 17 January 2018 as part of the ScipaDe ... |
| Tipo: Text |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00463/57452/59561.pdf |
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| Guillen, Jordi; Boncoeur, Jean; Carvalho, Natacha; Frangoudes, Katia; Guyader, Olivier; Macher, Claire; Maynou, Francesc. |
| In most fisheries worldwide, crew are paid through different shared remuneration systems rather than a fixed wage. In shared remuneration systems, wages can significantly increase when the economic performance of vessels improve, and consequently provide incentives to workers. However, in recent years, mainly due to high overexploitation levels that lead to reduced productivity and consequently lower salaries shared remuneration systems have lost their attractiveness. Different remuneration systems applied in fisheries world-wide are described and analyzed comparatively. Results explain how crew wages and rent distribution outcomes vary between the different remuneration systems depending on the state of exploitation of the resource. |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00375/48602/48983.pdf |
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| Malvarosa, Loretta; Murillas, Arantza; Lehuta, Sigrid; Nielsen, J. Rasmus; Macher, Claire; Goti, Leyre; Motova, Arina; Doering, Ralf; Haraldson, Gunnar; Accadia, Paolo; Hamon, Katell; Bastardie, Francois; Maravelias, Christos D.; Mardle, Simon; Thøgersen, Thomas. |
| An Impact Assessment (IA) is a process aimed at structuring and supporting the development of policies. Besides the fact that IA assumes different features when applied to different sectors, really it should help policy makers in evaluating the contribution to the fisheries sustainability of new regulations. The recent improvements and development around the IA methodologies go more and more toward the concept of a Sustainability Impact Assessment (SIA). The evolution of IA in the fishery sector has followed the general and increasing need in having a more and more integrated type of analysis, focusing on the three dimensions of sustainability (environmental, economic and social). This paper synthesizes the methodology developed under the EU FP7 SOCIOEC... |
| Tipo: Text |
Palavras-chave: Impact assessment; Fishery management; Effectiveness; Coherence; Acceptability; Sustainability. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00474/58521/65966.pdf |
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| Briton, Florence; Macher, Claire; Merzereaud, Mathieu; Legrand, Christelle; Fifas, Spyros; Thebaud, Olivier. |
| Well-established single-species approaches are not adapted to the management of mixed fisheries where multiple species are simultaneously caught in unselective fishing operations. In particular, ignoring joint production when setting total allowable catches (TACs) for individual species is likely to lead to over-quota discards or, when discards are not allowed, to lost fishing opportunities. Furthermore, economic and social objectives have been poorly addressed in the design of fisheries harvest strategies, despite being an explicit objective of ecosystem-based fisheries management in many jurisdictions worldwide. We introduce the notion of operating space as the ensemble of reachable, single-species fishing mortality targets, given joint production in a... |
| Tipo: Text |
Palavras-chave: Eco-viability; Mixed fisheries management; Bio-economic modelling; Integrated TAC advice. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00624/73614/73030.pdf |
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| Macher, Claire; Guyader, Olivier; Boncoeur, Jean. |
| This paper proposes a formal analysis of the discarding issue including the sorting labour costs. Empirical evidences from an application to the Nephrops fishery in the Bay of Biscay show that sorting is an important time consuming activity on board and a factor of discarding. However existing literature does not explicitly take into account the sorting activity and mainly focus on quota and catch constraints. The discarding model described in the paper includes sorting as a factor explaining discards. The costs of sorting landings and the time to sort them are included in the approach. The model is developed for one species studied at a tow scale with the assumption that catches are exogenous. It is shown that taking sorting costs into account, discarding... |
| Tipo: Text |
Palavras-chave: Discarding behaviour; Sorting; Microeconomic model; Nephrops fishery; Effort constraints. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00511/62306/66554.pdf |
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| Guillen, Jordi; Macher, Claire; Merzereaud, Mathieu; Fifas, Spyros; Guyader, Olivier. |
| MSY objectives are being adopted as major fisheries management targets worldwide. However, in fisheries where discards account for an important share of the catches, the yield, effort, and biomass at MSY can be significantly different when accounting or not for discards and thus when, basing the yield estimations on landings or catches. Also whether accounting for a certain survival rate, of discards can lead to different MSY targets estimates. Hence, both decisions have important, implications on catch and effort reduction recommendations, and consequently on the quota, calculations for fisheries managed by quotas. Results from the Bay of Biscay nephrops fishery confirm, that the optimal exploitation level can vary significantly when optimising for... |
| Tipo: Text |
Palavras-chave: Maximum Sustainable Yield (MSY); Discards; Nephrops; Survival rate. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00201/31180/29867.pdf |
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| Hamon, Katell; De Vos, Birgit; Verlé, Katrien; Kinds, Arne; Bonanomi, Sara; Ferraris, Matteo; Falavigna, Greta; Notti, Emilio; Pagliarino, Elena; Pronti, Andrea; Sala, Antonello; Zoboli, Roberto; Guyader, Olivier; Macher, Claire; Zengin, Mustafa; Uzmanoglu, M.selcuk; Eigaard, Ole Ritzau; Nielsen, J. Rasmus; Jensen, Frank; Elleby, Christian. |
| In this deliverable we investigated the drivers of investment in fisheries and how those can be activated to stimulate investment in alternative technologies to protect the benthos. To capture a wider range of factors than quantitative factors only we modified the work plan and included interviews with fishing industries in all regions. As a result we identified a wide range of reasons why fishers have (or have not) invested in alternative gears. As expected, the profitability of alternative technology is an important factor to invest but we also found many others. Those drivers were classified as economic, technical, regulatory, social, governance and environmental drivers. As advice to managers we also identified where and how interventions could improve... |
| Tipo: Text |
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| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00425/53646/54483.pdf |
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| Daures, Fabienne; Le Grand, Christelle; Macher, Claire; Leonardi, Sophie; Guyader, Olivier; Rostiaux, Emilie; Quinquis, Jerome; Barone, Herve; Miossec, Dominique; Raguenes, Pierre; Truffy, Francois; Le Ru, Loic; Monhurel, Lise. |
| Ce document est une synthèse des enquêtes réalisées auprès des pêcheurs professionnels en 2011 dans le cadre du Système d'Informations Halieutiques (SIH) de l'Ifremer. Il vient en complément des synthèses annuelles sur les flottilles de pêches et présente des données agrégées sur les navires enquêtés, leurs stratégies, les équipages et la population des patrons pêcheurs qui ont accepté de répondre au questionnaire économique du SIH en 2011 (sur les données 2010). |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00148/25910/23937.pdf |
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| Doyen, Luc; Bene, Christophe; Bertignac, Michel; Blanchard, Fabian; Cisse, Abdoul; Dichmont, Catherine; Gourguet, Sophie; Guyader, Olivier; Hardy, Pierre-yves; Jennings, Sarah; Little, Lorne Richard; Macher, Claire; Mills, David Jonathan; Noussair, Ahmed; Pascoe, Sean; Pereau, Jean-christophe; Sanz, Nicolas; Schwarz, Anne-maree; Smith, Tony; Thebaud, Olivier. |
| Reconciling food security, economic development and biodiversity conservation is a key challenge, especially in the face of the demographic transition characterizing many countries in the world. Fisheries and marine ecosystems constitute a difficult application of this bio-economic challenge. Many experts and scientists advocate an ecosystem approach to manage marine socio-ecosystems for their sustainability and resilience. However, the ways by which to operationalize ecosystem-based fisheries management (EBFM) remain poorly specified. We propose a specific methodological framework-viability modelling-to do so. We show how viability modelling can be applied using four contrasted case-studies: two small-scale fisheries in South America and Pacific and two... |
| Tipo: Text |
Palavras-chave: Biodiversity; Ecological economics; Ecosystem approach; Fisheries; Scenario; Viability. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00409/52009/52724.pdf |
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| Raveau, Adriana; Macher, Claire; Mehault, Sonia; Merzereaud, Mathieu; Le Grand, Christelle; Guyader, Olivier; Bertignac, Michel; Fifas, Spyros; Guillen Garcia, Jordi. |
| Several fleets with various fishing strategies operate as a mixed fishery in the Bay of Biscay. Among the main fleets, bottom trawlers target Norway lobster (Nephrops norvegicus) and, together with gillnetters, they also catch hake (Merluccius merluccius). Trawling leads to average-size catches that are below the minimum landing size (MLS); such catches are discarded since they cannot be sold. These discards result in negative impacts on stock renewal, as most of them do not survive. This also results in an economic loss for both bottom trawlers and gillnetters since these discards represent a future loss of rent. This study, based on the 2009 and 2010 selectivity experiments at sea, assesses the short- and long-term bio-economic impacts of four... |
| Tipo: Text |
Palavras-chave: Demersal trawl fishery; Bio-economic analysis; Selectivity; Simulation; Selective device; Nephrops norvegicus; Merluccius merluccius; Atlantic Ocean. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00110/22135/19774.pdf |
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| Leblond, Emilie; Daures, Fabienne; Berthou, Patrick; Merrien, Claude; Pitel-roudaut, Mathilde; Le Grand, Christelle; Demaneche, Sebastien; Jezequel, Michele; Bodere, Erwan; Le Blond, Samuel; Macher, Claire; Le Grand, Christelle. |
| This document, which is the eighth edition of a series started in 2000, provides a global overview of the data collected in 2011 as part of the Fisheries Observatory of Ifremer. It aims to present a summary of the activity and economic situation of the French fleets operating in the North Sea, English Channel, Northeast Atlantic and Mediterranean Sea in 2010. It updates the 2009 issue, which was published in 2011. This synthesis is intended for a wide audience. The document contains several fact sheets: • The first sheet provides a description of the French national fishing fleet (North Sea - Channel, Atlantic and Mediterranean Sea, excluding overseas), including vessel and crew characteristics. It also presents the evolution of the French fishing fleet... |
| Tipo: Text |
Palavras-chave: Pêche; Typologies; Flottille; Métier; Engin; Indicateurs d’activité; Indicateurs économiques; Mer du Nord; Manche; Atlantique; Méditerranée; France.; Fishing sector; Typologies; Fishing fleet; Métier; Gear; Indicators of fishing activity; Economic indicators; North Sea; English Channel; Atlantic; Mediterranean Sea; France. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00117/22797/20601.pdf |
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| Leblond, Emilie; Daures, Fabienne; Leonardi, Sophie; Demaneche, Sebastien; Merrien, Claude; Berthou, Patrick; Rostiaux, Emilie; Macher, Claire; Lespagnol, Patrick; Le Grand, Christelle; Le Blond, Samuel. |
| This document, which is the eighth edition of a series started in 2000, provides a global overview of the data collected in 2013 as part of the Fisheries Observatory of Ifremer. It aims to present a summary of the activity of the French fleets operating in the North Sea, English Channel, Northeast Atlantic and Mediterranean Sea in 2012. It updates the 2011 issue, which was published in 2013. This synthesis is intended for a wide audience. The document contains several fact sheets: • The first sheet provides a description of the French national fishing fleet (North Sea - Channel, Atlantic and Mediterranean Sea, excluding overseas), including vessel and crew characteristics. It also presents the evolution of the French fishing fleet since 1990. • Then,... |
| Tipo: Text |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00248/35971/34497.pdf |
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| Bourillet, Jean-francois; Jouanneau, J.m.; Macher, Claire; Le Hir, Pierre; Naughton, F. |
| The Quaternary sequence of the Armorican continental shelf in the Bay of Biscay is setting down above one regional erosion surface, which has been produced by successive transgressions that occurred during the last deglaciations. The few meters of the sequence covers the Holocene period and it is composed by two clean and sandy units at the base followed by thin (few decimetres) clayed sand unit and mud (few millimetres) unit in the top. The two upper units form the improperly called "La Grande Vasière" area over 8,000 km2. The settlement of these sedimentary units occurred since 8,000 C14 years BP, previously to other coastal mud fields setting of the shelf. Historical grain size data show that the mud field has lost part of the fine content during the... |
| Tipo: Text |
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| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/acte-6243.pdf |
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| Le Floc'H, Pascal; Bertignac, Michel; Curtil, Olivier; Macher, Claire; Mariat-roy, Emilie; Paulet, Yves-marie. |
| This study considers how to reconcile different spatial scales to find the best common denominator to be used as an ecosystem-based management unit. For this, two fishery production zones differing ecologically, economically, legally and institutionally were investigated. The first case study is located within French territorial waters, in a MPA created in 2007- the Parc Naturel Marin d'Iroise (PNMI). The second case study, the Bay of Biscay, covers both territorial waters and the French exclusive economic zone. The paper adopts a multidisciplinary approach. Relevant questions concern how marine space is shared between exploited species and fishing fleets, especially the spatial mobility strategies they employ. An assessment of the institutional system... |
| Tipo: Text |
Palavras-chave: Spatial scale; Ecosystem-based fisheries management; Marine protected area; Socio-system. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00460/57191/59156.pdf |
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| Registros recuperados: 40 | |
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