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Registros recuperados: 11
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Bioeconomic model of the dynamics of fisheries facing global economic and environment changes: the French Guyana shrimp fishery ArchiMer
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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Can Dispersed Biomass Processing Protect the Environment and Cover the Bottom Line for Biofuel? AgEcon
Egbendewe-Mondzozo, Aklesso; Swinton, Scott M.; Bals, Bryan D.; Dale, Bruce E..
This paper compares environmental and profitability outcomes for a centralized biorefinery for cellulosic ethanol that does all processing versus a biorefinery linked to a decentralized array of local depots that pretreat biomass into concentrated briquettes. The analysis uses a spatial bioeconomic model that maximizes predicted profit from crop and energy products, subject to the requirement that the biorefinery must be operated at full capacity. The model draws upon biophysical crop input-output coefficients simulated with the EPIC model, as well as input and output prices, spatial transportation costs, ethanol yields from biomass, and biorefinery capital and operational costs. The model was applied to 82 cropping systems simulated across 37...
Tipo: Working Paper Palavras-chave: Biomass production; Bioenergy supply; Cellulosic ethanol; Environmental trade-off analysis; Bioeconomic modeling; EPIC; Spatial configuration; Local biomass processing; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Resource /Energy Economics and Policy; Q16; Q15; Q57; Q18.
Ano: 2011 URL: http://purl.umn.edu/119348
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Effects of the Share Remuneration System on Fisheries Management Targets and Rent Distribution ArchiMer
Guillen, Jordi; Macher, Claire; Merzereaud, Mathieu; Boncoeur, Jean; Guyader, Olivier.
Most fisheries worldwide remunerate their crew with a share system, where crew receive a part of the revenues or a part of the revenues less costs, rather than a fixed wage. Although labor is one of the main costs in fisheries and the share remuneration system has a strong influence on firm behavior and its economic performance, little attention has been paid it. In a share remuneration system, crew salaries can significantly increase when the economic performance of a vessel improves. This allows the crew to capture part of the fisheries rent. Bioeconomic analyses are performed for the Bay of Biscay nephrops fishery on main management targets. Results confirm the importance of considering a share system compared to a fixed remuneration system in vessel...
Tipo: Text Palavras-chave: Remuneration systems; Share remuneration; Lay system; MSY; MEY; Open access; Bioeconomic modeling; Nephrops.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00260/37086/35593.pdf
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Evaluation, scénarios et viabilité écologique et économique des pêcheries côtières tropicales : application au cas de la Guyane Française ArchiMer
Cisse, Abdoul.
The need for an integrated approach to fisheries is now widely affirmed, including the FAO, in particular in the context of tropical artisanal fisheries. These small-scale fisheries, often multispecies are very important in terms of production, employment and food security. However these fisheries and the exploited resources are often characterized by a lack of data making difficult their management within an ecosystem approach, and by the ecological and economic system complexities including trophic and technological interactions. This thesis aims to contribute to the development of bioeconomic tools for small tropical fisheries in a sustainable management perspective based on the ecosystem approach. In this perspective, the French Guiana coastal fishery...
Tipo: Text Palavras-chave: Pêcherie tropicale à petite échelle; Multi-flottilles; Multispécifique; Approche ecosystémique; Analyse multivariée; Intéractions trophiques; Modélisation bioéconomique; Indicateurs bioéconomiques; Analyse de viabilité; Stochasticité; Théorie des jeux.; Tropical small-scale fishery; Multi-fleet; Multi-species; Ecosystem approach; Multivariate analysis; Trophic interactions; Bioeconomic modeling; Bio-indicators; Sustainability analysis; Stochasticity; Game theory.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00144/25492/23646.pdf
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Fish, fishers, seals and tourists: Economic consequences of creating a marine reserve in a multi-species, multi-activity context ArchiMer
Boncoeur, Jean; Alban, Frederique; Guyader, Olivier; Thebaud, Olivier.
This paper investigates some economic consequences of creating a marine reserve on both fishing and ecotourism, when the range of controllability of fishing effort is limited and the impact of the reserve on ecosystem is considered. The issue is illustrated by the example of creating a no-take zone in part of a region where fishing is managed through a limited entry license system, and which is inhabited by two interacting stocks: a stock of prey (fish) and a stock of predators (seals). While the former is targeted by commercial fishing, the latter is not subject to harvest but is a potential basis for a commercial non-extractive activity (seal watching). Analysis is conducted with the help of a bioeconomic model combining the features of marine reserve...
Tipo: Text Palavras-chave: Marine protected areas; Multispecies interactions; Ecotourism; Bioeconomic modeling.
Ano: 2002 URL: https://archimer.ifremer.fr/doc/00244/35506/34010.pdf
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Growing into Interdisciplinarity: How to Converge Biology, Economics, and Social Science in Fisheries Research? Ecology and Society
Kulmala, Soile; Marine Research Centre, Finnish Environment Institute; MTT Agrifood Research, Finland; Finnish Game and Fisheries Research Institute; soile.kulmala@ymparisto.fi; Kuikka, Sakari; Fisheries and Environmental Management Group, Department of Environmental Sciences, University of Helsinki; sakari.kuikka@helsinki.fi.
It has been acknowledged that natural sciences alone cannot provide an adequate basis for the management of complex environmental problems. The scientific knowledge base has to be expanded in a more holistic direction by incorporating social and economic issues. As well, the multifaceted knowledge has to be summarized in a form that can support science-based decision making. This is, however, difficult. Interdisciplinary skills, practices, and methodologies are needed that enable the integration of knowledge from conceptually different disciplines. Through a focus on our research process, we analyzed how and what kind of interdisciplinarity between natural scientists, environmental economists, and social scientists grew from the need to better understand...
Tipo: Peer-Reviewed Reports Palavras-chave: Baltic Sea salmon fisheries; Bayesian belief networks; Bioeconomic modeling; Integrated model; Interdisciplinarity interdisciplinary learning; Fisheries research; Methodological epochè ; Multidisciplinarity.
Ano: 2012
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Hare or Tortoise? Trade-offs in Recovering Sustainable Bioeconomic Systems ArchiMer
Martinet, Vincent; Thebaud, Olivier; Rapaport, Alain.
In this paper, we develop a framework for (a) the study of sustainability of dynamic bioeconomic systems and (b) the definition of recovery paths from unsustainable situations. We assume that the system follows a sustainable trajectory if it evolves over time within a set of multidimensional constraints. We use the mathematical concept of viability to characterize sustainability. Recovery paths are studied with regards to their duration and their acceptability. This general framework is applied to the issue of recovering sustainable fisheries. We define sustainability in a fishery as the requirement that a set of economic, ecological, and social constraints is satisfied at all times. Recovery paths are characterized by the time required to obtain...
Tipo: Text Palavras-chave: Sustainability; Recovery strategies; Multicriteria approach; Optimal and viable control; Bioeconomic modeling; Fisheries economics.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00016/12715/9654.pdf
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Overexploitation of Renewable Resources by Ancient Societies and the Role of Sunk-Cost Effects Ecology and Society
Janssen, Marco A; Indiana University; maajanss@indiana.edu; Scheffer, Marten; Wageningen Agricultural University; Marten.Scheffer@wur.nl.
One of the most persistent mysteries in the history of humankind is the collapse of ancient societies. It is puzzling that societies that achieved such high levels of development disappeared so suddenly. It has been argued that overexploitation of environmental resources played a role in the collapse of such societies. In this paper, we propose an explanation why overexploitation seems more common in ancient societies that built larger structures. This explanation is based on the well-studied sunk-cost effect in human decision making: decisions are often based on past investments rather than expected future returns. This leads to an unwillingness to abandon something (e. g., a settlement) if a great deal has been invested in it, even if future prospects...
Tipo: Peer-Reviewed Reports Palavras-chave: Bioeconomic modeling; Collapse of ancient societies; Sunk-cost effect; Resilience.
Ano: 2004
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Restoring the ecosystem creates wealth. The case of the Northern coast of Tunisia’s deep-water rose shrimp trawl fishery ArchiMer
Vendeville, Philippe; Fadhel, Hosni; Magraoui, Amira; Sacchi, Jacques.
The demersal trawl fishery of the north Tunisian coast primarily targets the deep-water rose shrimp, Parapenaeus longirostris, and secondarily a variety of demersal fish species. These fishes include hake (Merluccius merluccius), common pandora (Pagellus erythrinus), red mullet (Mullus barbatus), surmullet (Mullus surmuletus), Atlantic horse mackerel (Trachurus trachurus), bogue (Boops boops), picarel (Spicara smaris) and spotted flounder (Citharus linguatula). A bioeconomic model was used to test management measures through scenarios that ran over eleven years to estimate the viability of the fishery according to biological and economic results. The most beneficial scenario was the combination of several management measures including a temporal closure of...
Tipo: Text Palavras-chave: Bioeconomic modeling; Bycatch; Deep-water rose shrimp; Mediterranean shrimp fisheries; Scenarios; Temporal closure.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00339/45048/44568.pdf
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The Effect of Climate Change on Wetlands and Waterfowl in Western Canada: Incorporating Cropping Decisions into a Bioeconomic Model AgEcon
Withey, Patrick; van Kooten, G. Cornelis.
We extend an earlier bioeconomic model of optimal duck harvest and wetland retention in the Prairie Pothole Region of Western Canada to include cropping decisions. Instead of a single state equation, the model has two state equations representing the population dynamics of ducks and the amount of wetlands. We use the model to estimate the impact of climate change on wetlands and waterfowl, including direct climate effects as well as land use change due to biofuel policies aimed at mitigating climate change. The model predicts that climate change will reduce wetlands by 47-56 percent from historic levels. Land use change is expected to reduce wetlands by 45 percent from historic levels, whereas direct climate effects will range from a reduction of 2-11...
Tipo: Working or Discussion Paper Palavras-chave: Bioeconomic modeling; Wetland protection; Wildlife management; Climate change; Biofuels; Environmental Economics and Policy; Q57; C61; Q25; Q54; C13; Q10; Q16.
Ano: 2011 URL: http://purl.umn.edu/117437
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The potential impact of marine protected areas on the Senegalese sardinella fishery ArchiMer
Ba, Aliou; Chaboud, Christian; Schmidt, Joern; Diouf, Malick; Fall, Massal; Deme, Moustapha; Brehmer, Patrice.
In the early 2000s, Senegal set up several Marine Protected Areas (MPAs) along its coastal zone with the purpose of biodiversity conservation and to support sustainable management of fisheries. However, the impact of MPAs may vary according to the type of fisheries. In Senegal, the sardinella fishery accounts for 70% of total catches. This fishery is of crucial importance for national food security and employment. Given this importance, it is necessary to evaluate the impact of MPAs, often being considered as a tool for fisheries management. An analytical, dynamic and spatial bio-economic model of sardinella fishery, considering fish and fisher migration, has been developed and scenarios over forty years have been analyzed. The results show that the...
Tipo: Text Palavras-chave: Small scale fisheries; MPA; Bioeconomic modeling; Fishing capacity; Fishery management; Sardinella aurita; Sardinella maderensis; Aichi targets; West Africa.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00605/71672/73087.pdf
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