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A bioeconomic model of a marine park AgEcon
Greenville, Jared W.; MacAulay, T. Gordon.
A spatial bioeconomic model of a fishery will be used to investigate the effect of creating a marine park in a heterogeneous environment. Focus will be placed on the relevant biological and economic conditions needed to provide a benefit to both fishers and conservationists alike. The fishing environment will be one of limited entry to better simulate the conditions which exist in many developed nations. Fishers will be assumed to operate across patched in which the fish stocks are linked via either sink-source or density dependant spatial relationships.
Tipo: Conference Paper or Presentation Palavras-chave: Bioeconomic; Marine protected area; Fisheries; Environmental Economics and Policy; Resource /Energy Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/58451
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A Cautionary Note on Individual Transferable Quotas Ecology and Society
Sumaila, U. Rashid; UBC Fisheries Centre, University of British Columbia; r.sumaila@fisheries.ubc.ca.
Individual transferable quotas (ITQs) are a type of catch share system, which is a tool used by some governments to manage fisheries. Technical reasons for taking a rather cautious approach to the implementation of ITQs have been provided previously. In the current contribution, I first highlight the strengths and weaknesses of ITQs and then provide suggestions on how to design and implement these quotas to mitigate their weaknesses. ITQs need to be designed carefully as part of a broad ecosystem-based management scheme to meet the three generally accepted objectives of modern fisheries management: ecological, economic, and social sustainability.
Tipo: Peer-Reviewed Reports Palavras-chave: Catch shares; Ecological sustainability; Economic sustainability; Economic efficiency; Exclusive and transferable rights; Ecosystem-based fisheries management; Fisheries; Individual transferable quotas; ITQs; Social sustainability.
Ano: 2010
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A comparative review of the fisheries resource management systems in New Zealand and in the European Union ArchiMer
Marchal, Paul; Lallemand, Philippe; Stokes, Kevin; Thebaud, Olivier.
This review aims at comparing the fisheries management systems existing in New Zealand and in the European Union. The involvement of stakeholders at all stages of the management process is generally more transparent and better established in New Zealand than in the EU. Both systems aim at achieving an adequate balance between sustainability and utilisation and consider the precautionary approach as a founding principle. The social objectives are probably more explicit in the EU management system. In New Zealand, B-MSY is a legal management target for all stocks in the quota management system (QMS), but management strategies were poorly explicit until most recently. In the EU, there have not been any legal management targets or strategies until 1999. Since...
Tipo: Text Palavras-chave: Fisheries; Total allowable catches; Rights based management; Quota; Atlantic Ocean; Pacific Ocean.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/00000/11167/7534.pdf
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A Short History of the Namibian Hake Fishery—a Social-Ecological Analysis Ecology and Society
Paterson, Barbara; Marine Research Institute (Ma-Re), Zoology Department, University of Cape Town, South Africa; Barbara@paterson.alt.na; Kirchner, Carola; National Marine Information and Research Centre (NatMirc), Ministry of Fisheries and Marine Resources, Namibia; University of Cape Town, Graduate School of Business, South Africa; carola.kirchner32@gmail.com; Ommer, Rosemary E.; University of Victoria; ommer@uvic.ca.
As a legacy of Namibia’s colonial past, the country inherited severely depleted fish resources at the time of independence. Today, Namibia’s fisheries are almost exclusively industrial. The hake fishery is the country’s most important fishery, which was restructured from a pre-independence foreign fishery into one that is characterized by locally based, vertically integrated fishing and processing companies. It is widely believed that Namibia has successfully combined the neoliberal economics that have been characteristic of the development narratives since the 1980s with welfarist goals for poverty reduction. However, there are strong indications that the fish stocks are declining, while the high economic expectations for the...
Tipo: Peer-Reviewed Reports Palavras-chave: Distant water fleets; Fisheries; Hake; Merlucius capensis; Merluccius paradoxus; Namibia; Namibianisation; Northern Benguela; South West Africa; Sustainable fisheries development.
Ano: 2013
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Accord visant à favoriser le respect par les navires de pêche en haute mer des mesures internationales de conservation et de gestion OceanDocs
Ministère des Affaires Etrangères (Sénégal); Ambassade du Sénégal à Rôme (Italy)
Tipo: Other Palavras-chave: Fisheries; International agreements; Maritime legislation; International cooperation; Fisheries; International agreements; International cooperation; Http://aims.fao.org/aos/agrovoc/c_2934; Http://aims.fao.org/aos/agrovoc/c_3915; Http://aims.fao.org/aos/agrovoc/c_16378.
Ano: 2009 URL: http://hdl.handle.net/1834/4087
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Achieving good environmental status in the Black Sea: scale mismatches in environmental management Ecology and Society
O'Higgins, Tim; Scottish Association for Marine Science; Tim.O'Higgins@sams.ac.uk; Farmer, Andrew; Institute for European Environmental Policy; AFarmer@ieep.eu; Daskalov, Georgi; IBER-BAS;; Knudsen, Stale; University in Bergen; stale.knudsen@sosantr.uib.no; Mee, Laurence; Scottish Association for Marine Science; laurence.mee@sams.ac.uk.
The Black Sea has suffered severe environmental degradation. Governance of the Black Sea region is complex and results in a series of scale mismatches which constrain management. This paper develops a simple classification of spatial scale mismatches incorporating the driver, pressure, state, welfare, response (DPSWR) framework. The scale mismatch classification is applied to two major environmental problems of the Black Sea, eutrophication and small pelagic fisheries. A number of scale mismatches are described and classified and potential solutions are identified.
Tipo: Peer-Reviewed Reports Palavras-chave: Black Sea; Ecosystem approach; Eutrophication; Fisheries; Marine strategy framework directive; Scale mismatch.
Ano: 2014
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Adaptation to Climate Change in Marine Capture Fisheries AgEcon
Grafton, R. Quentin.
This Research Report responds to the challenge for marine capture fisheries of how and when to adapt to climate change. The report presents: (1) a set of fisheries climate change policy options (2) a risk and vulnerability assessment tool and management decision-making framework; and (3) ex ante and ex post climate adaptation possibilities in the marine environment. The report also includes: (1) a discussion of how management objectives and instruments influence resilience and adaptation; (2) a decision-making process to assess vulnerabilities to climate change and to manage adaptation responses; (3) an inter-temporal framework to help decision-makers know when to adapt; (4) a risk and simulation approach to confront the uncertainties of the possible...
Tipo: Report Palavras-chave: Climate adaptation; Climate change; Fisheries; Environmental Economics and Policy.
Ano: 2009 URL: http://purl.umn.edu/94886
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Adaptive Harvesting in a Multiple-Species Coral-Reef Food Web Ecology and Society
Kramer, Daniel B; Michigan State University; dbk@msu.edu.
The utility of traditional bio-economic harvest models suffers from their dependence on two commonly used approaches. First, optimization is often assumed for harvester behavior despite system complexity and the often neglected costs associated with information gathering and deliberation. Second, ecosystem interactions are infrequently modeled despite a growing awareness that these interactions are important. This paper develops a simulation model to examine the consequences of harvesting at two trophic levels in a coral-reef food web. The model assumes adaptive rather than optimizing behavior among fishermen. The consequences of changing economic, biological, and social parameters are examined using resilience as an evaluative framework. Three general...
Tipo: Peer-Reviewed Reports Palavras-chave: Fisheries; Resource economics; Coral reefs; Resilience; Adaptive behavior; Food web; Simulation.
Ano: 2008
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Adaptive, participatory and integrated assessment (APIA) of the impacts of irrigation on fisheries: Evaluation of the approach in Sri Lanka. AgEcon
Nguyen-Khoa, Sophie; Smith, Laurence; Lorenzen, Kai.
Tipo: Working or Discussion Paper Palavras-chave: Fisheries; Irrigation effects; Assessment; Decision making; Case studies; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods; Resource /Energy Economics and Policy.
Ano: 2005 URL: http://purl.umn.edu/92016
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African Fisheries: Major Trends and Diagnostic of the 20th Century OceanDocs
Njock, J.C.; Njifonjou, O..
The marine fisheries production from African coastal countries, combined with that of freshwater production of the continent is estimated to be 6 millions metric tons, corresponding only 5 % of the total world production. Africa's contribution to fisheries products (1,5 %) is insignificant compared to that of world commerce which is around 44 millions tons. This deplorable situation is due to a certain number of problems which include s among others, the relative biogenic poverty of African waters, the exploitation of African waters by foreign vessels, the total lack of catches effected by the African vessels out of their regional boundaries, the lack of knowledge on the mastering of commercialisation and on veritable commercial politics of fisheries...
Tipo: Proceedings Paper Palavras-chave: Fisheries.
Ano: 2000 URL: http://hdl.handle.net/1834/839
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Agricultural water productivity: estimation at plot, farm and basin scale AgEcon
Cook, Simon; Gichuki, Francis; Turral, Hugh.
Tipo: Working or Discussion Paper Palavras-chave: Irrigated farming; Productivity; Estimation; Water balance; Water use; Simulation models; Water use efficiency; Livestock; Fisheries; Production Economics; Resource /Energy Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/91959
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An integrated Bayesian modeling approach for the growth of Indian Ocean yellowfin tuna ArchiMer
Dortel, Emmanuelle; Sardenne, Fany; Bousquet, N.; Rivot, Etienne; Million, Julien; Le Croizier, Gael; Chassot, Emmanuel.
The Indian Ocean Tuna Tagging Program provided a unique opportunity to collect demographic data on the key commercially targeted tropical tuna species in the Indian Ocean. In this paper, we focused on estimating growth rates for one of these species, yellowfin (Thunnus albacares). Whilst most growth studies only draw on one data source, in this study we use a range of data sources: individual growth rates derived from yellowfin that were tagged and recaptured, direct age estimates obtained through otolith readings, and length-frequency data collected from the purse seine fishery between 2000 and 2010. To combine these data sources, we used an integrated Bayesian model that allowed us to account for the process and measurement errors associated with each...
Tipo: Text Palavras-chave: Indian Ocean yellowfin; Hierarchical Bayesian model; Tagging; Fisheries.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00254/36513/35080.pdf
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An Open-Access Fishery with Rational Expectations AgEcon
Berck, Peter; Perloff, Jeffrey M..
How potential entrants to an open-access fishery form their expectations determines the fishery’s adjustment path to a steady state but not the steady state values themselves. It is well known that, in the standard model with myopic expectations (those based on current values), boats enter the fishery only when the fish stock is greater than its steady state stock. We show that, with rational expectations (perfect foresight), however, boats may enter when the fish stock is much lower than its steady state value if the boat fleet is sufficiently small. This paper contrasts myopic and rational expectations within a general dynamic model of an open-access fishery.
Tipo: Working or Discussion Paper Palavras-chave: Economic aspects; Expectations; Fisheries.
Ano: 1982 URL: http://purl.umn.edu/42856
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An overview of interactions among oceanography, marine ecosystems, climatic and human disruptions along the eastern margins of the Pacific Ocean RChHN
HALPIN,PATRICIA M.; STRUB,P. TED; PETERSON,WILLIAM T.; BAUMGARTNER,TIM R..
Physical processes, biotic processes and human activities all act to shape marine ecosystems. Future management of these valuable ecosystems requires an integrative approach that takes into account complicated organismal interactions, oceanographic processes that span large scales of time and space, and how anthropogenic effects interact with the natural environment. The temperate west coasts of North and South America represent a unique opportunity for comparison, as many of the same oceanographic processes, particularly upwelling, occur off both coasts. Additionally, a number of marine ecosystems in both areas have surprising parallels. Here we present an overview of the oceanographic processes that dominate the coastlines, and give examples of...
Tipo: Journal article Palavras-chave: Eastern boundary currents; Anthropogenic effects; Marine community ecology; Fisheries; Interdecadal variability.
Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2004000300002
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Analyse des captures des pêcheries marines et lagunaires d'Egypte en liaison avec la construction du haut barrage d'Assouan ArchiMer
Bebars, Mi; Lasserre, G; Hoai, Tl.
Annually exploited communities from the Nile delta and two nearby lagoons (Manzalah and Edkou) were monitored from 1962 to 1989. The changes in community structure were analysed as a function of two events: fishing pressure growth (motorized fishing vessels) which increased by a factor of 19 between 1952 and 1962; and the construction of the Aswan Dam, which was built between 1965 and 1969, reducing the flow of the Nile by 90 %. Before the construction of the dam, increased sea fishing pressure led to a decline in landings from 33,832 tons in 1962 to 8,522 tons in 1969, but with no structural change in the exploited community. However, following completion of the dam in 1969, the community structure changed and a significant correlation was detected...
Tipo: Text Palavras-chave: Impact; Aswan Dam; Yield; Fisheries; Diversity; Lagoon.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00093/20406/18073.pdf
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Aquaculture and Fisheries Interactions: Implications for the Global Supply of Fish AgEcon
Arnason, Ragnar.
Aquaculture, or more generally fish farming, and fisheries interact in several different ways. First, many types of fish farming require fish products as inputs, mostly for feeding purposes. Second, farmed fish and wild fish products compete in fish markets with consequences for both the industry and, of course, consumers. Third, fish farming generates various types of polluting agents that may affect wild fish stocks and their habitat. Several other interactions exist. This paper is primarily concerned with the implications of the first of these interactions, namely the input relationships, for the overall supply of fish products in the future. To the extent that the fish farming industry demands wild fish products such as fish meal, fish oil, etc....
Tipo: Conference Paper or Presentation Palavras-chave: Aquaculture; Fisheries; Aquaculture and fisheries interactions; Global supply of fish; Livestock Production/Industries; Q0; Q1; Q2.
Ano: 2005 URL: http://purl.umn.edu/55996
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Aquaculture et pêche dans les pays du Sud : analyse prospective 2025 de la demande en recherche ArchiMer
Blancheton, Jean-paul; Fuchs, Jacques; Lacroix, Denis; Lacroix, Nicole; Lemercier, Philippe; Marin, Jean; Antoine, Loic.
This document presents four years of work by an Ifremer's prospective group on the research demand in the fields of fisheries and aquaculture in southern countries by 2025. The study focused on a retrospective assessment of the scientific cooperations conducted by the Institute with southern countries over the past twenty-five years. It was followed by a classic prospective ana/ysis based on the method of scenarios, comp/eted bya research on a wide range of published documents. The analysis identified the most Frequent research demands in five geographic areas of the southern hemisphere. The relevant research themes where Ifremer should intervene as weil as geographic priorities were a/so defined. Two practical conclusions were formulated: on the one hand,...
Tipo: Text Palavras-chave: Southern countries; Fisheries; Aquaculture; Research demand; Prospective analysis; Pays du Sud; Halieutique; Aquaculture; Demande en recherche; Prospective.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/rapport-4314.pdf
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Aquatic Sciences and Fisheries Abstracts (ASFA) OceanDocs
Pepe, Richard.
Supported by IOC/IODE
Tipo: Conference Material Palavras-chave: Aquatic sciences; Fisheries; Abstracts; Fisheries; Http://aims.fao.org/aos/agrovoc/c_2934.
Ano: 2007 URL: http://hdl.handle.net/1834/2762
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Aquisys 1.3 - validated version of the computer system to support best management practices (BMP) and environmental management for aquaculture in Brazil. Repositório Alice
PESSOA, M. C. P. Y.; FRASCÁ-SCORVO, C. M. D.; LOSEKANN, M. E.; HISANO, H.; SCORVO FILHO, J.; SILVA, C. A. da; SILVA, M. S. G. M. e; SAMPAIO, F. G.; INOUE, L. A. K. A.; BERGAMIN, G. T.; QUEIROZ, J. F. de; PAZZIANOTTO, C. B..
The present work presents the validated version of the computer system to support Best Management Practices (BPM) and Environmental Management for aquaculture in Brazil ? Aquisys 1.3, resulting from Aquisys Validation Project conducted by Embrapa Environment. The prototype version, Aquisys 1.0, developed in the ?Management and Environmental Management of Aquiculture? Project (?Aquabrasil? network Project) makes use of information acquired by the user via visual observations, low cost water quality kits and common samples held on the farm. This data is input in the system in a questionnaire, which will enable the system to manage this information and provide the user with necessary guidance, assessment and calculations to achieve best manage practice and...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Best Aquaculture Practices (BAP); Web system; Aquafarming; Good aquaculture practices; Oreochromis niloticus; Fisheries; Aquaculture.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1036546
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Aquisys 1.3 - validated version of the computer system to support best management practices (BMP) and environmental management for aquaculture in Brazil. Repositório Alice
PESSOA, M. C. P. Y.; FRASCÁ-SCORVO, C. M. D.; LOSEKANN, M. E.; HISANO, H.; SCORVO FILHO, J. D.; SILVA, C. A.; SILVA, M. S. G. M. e; SAMPAIO, F. G.; QUEIROZ, J. F. de; PAZZIANOTTO, C. B..
The present work presents the validated version of the computer system to support Best Management Practices (BPM) and Environmental Management for aquaculture in Brazil ? Aquisys 1.3, resulting from Aquisys Validation Project conducted by Embrapa Environment. The prototype version, Aquisys 1.0, developed in the ?Management and Environmental Management of Aquiculture? Project (?Aquabrasil? network Project) makes use of information acquired by the user via visual observations, low cost water quality kits and common samples held on the farm. This data is input in the system in a questionnaire, which will enable the system to manage this information and provide the user with necessary guidance, assessment and calculations to achieve best manage practice and...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Best Aquaculture Practices (BAP); Web system; Aquafarming; Good aquaculture practices; Oreochromis niloticus; Fisheries; Aquaculture.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037712
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