SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Sampaio, Yony; Costa, Ecio de Farias; Albuquerque, Erica; Sampaio, Breno Ramos.

This paper analyses the impact of farmed shrimp on the economy of ten municipalities in the Northeast of Brazil. A model of the municipal economy is developed and input-output tables are used to estimate indirect and induced impacts on job, income and municipal finances. It is concluded that farmed shrimp has a sizable contribution to job increases, in particular formal employment. Indirect and induced impacts are reduced because of spillovers to larger municipalities and other states. Income impacts can be sizable in particular in small counties. In general, the generated income represents a large share of total municipal product. In relation to municipal finance, direct contribution is rather small but indirect, through product increases and mainly...

Tipo: Journal Article

Palavras-chave: Farmed shrimp; Municipal level impacts; Direct; Indirect and induced impacts; Job; Income; Tax impacts.; Agribusiness; Q10; Q22; R11..

Ano: 2008

URL: http://purl.umn.edu/61195

Non-Market Values and Optimal Marine Reserve Switching

Yamazaki, Satoshi; Grafton, R. Quentin; Kompas, Tom.

A stochastic bio-economic model is constructed to analyse the effects of marine reserve ‘switching’ between a ‘no take’ area and a harvested area. The model accounts for both market and non-market values of the fishery. Estimated parameters from the red throat emperor fishery from the Great Barrier Reef are used. Simulations show that an optimal switching strategy is, under a range of scenarios, preferred to fixed reserve and no reserve strategies. An important outcome is that the non-market values associated with the size of the fishery substantially affect both the returns from switching and the closure time.

Tipo: Report

Palavras-chave: Marine reserves; Stochastic control; Non-market values; Environmental Economics and Policy; Research Methods/ Statistical Methods; C61; Q22.

Ano: 2009

URL: http://purl.umn.edu/94825

Cod today and none tomorrow: The Economic Value of a Marine Reserve

Grafton, R. Quentin; Kompas, Tom.

The northern cod fishery was once one of the world’s largest capture fisheries. Using data from the fishery, this research calculated the economic value of a marine reserve using a stochastic optimal control model with a jump-diffusion process. The analysis shows that, an optimal-sized marine reserve in this fishery would have prevented the fishery’s collapse and generated a triple payoff. Even if harvesting had been ‘optimal’ the profits from fishing would have been raised. The recovery time would also have decreased for the biomass to return to its former state and smoothed fishers’ harvests and profits. Following a negative shock, the chance of a catastrophic collapse would have been lowered.

Tipo: Report

Palavras-chave: Marine reserves; Stochastic control; Fisheries; Environmental Economics and Policy; C61; Q22.

Ano: 2009

URL: http://purl.umn.edu/94822

Are Preferences for Environmental Quality Sensitive to Financial Funding Schemes? Evidence from a Marine Restoration Programme in the Black Sea

Remoundou, Kyriaki; Koundouri, Phoebe; Adaman, Fikret; Nunes, Paulo A.L.D..

This paper uses a non-market valuation study to elicit consumers’ preferences for a marine restoration programme in the Black Sea aiming to reduce the level of public health risk from bathing and improve water quality and the overall level of marine biodiversity. In this context, we administer a stated choice experiment in coastal settlements in Ukraine and Turkey and employ two tax revenue reallocation schemes as payment vehicles. One proposes the financing of the marine restoration programme by the reduction of the public budget for renewable energy and the second by the reduction of the public budget on training for civil servants. We examine the stated preferences and the subsequently derived economic value estimates in the two treatments with the aim...

A Study on Consumer Behaviour at Organized Fish Retail Outlet

Palavras-chave: Non-Market Valuation; Stated Choice Experiment; Payment Vehicle; Tax Revenues Reallocation; Marine Resources; Black Sea; Marine Biodiversity; Developing Countries; Environmental Economics and Policy; Q22; Q28.

Ano: 2011

URL: http://purl.umn.edu/108204

Mugaonkar, Pankajkumar Hanmantrao; Ananthan, P.S.; Samal, Suman Sekhar; Debnath, Biswajit.

Indian consumers have been buying fish from the unhygienic fish markets, but of late fish has become available at many of the multi-format retail outlets. Consumers’ behaviour at organized fish retail outlets in Mumbai has been studied. The majority of consumers are young (25-35 years) and belong to upper middle class. Fresh fish is the preferred choice and about 60 per cent consumers have emphasized on freshness rather than price of fish. About 97 per cent consumers have recently shifted to organized retail outlets from local markets for purchasing fish. The majority of consumers (84.3%) have been found to be species-specific while buying fish. Quality and convenience have been found to be the major factors responsible for shift from local markets....

Tipo: Journal Article

Palavras-chave: Organized retailing; Purchasing behaviour; Consumer’s awareness; Fish and fisheries products; CIFE technology; Agricultural and Food Policy; Q13; Q22.

Ano: 2011

URL: http://purl.umn.edu/109511

Fishery Management Games: How to reduce effort and admit new members

Do, Kim Hang Pham; Folmer, Henk; Norde, Henk.

This paper addresses the two main problems that Regional Fishery Management Organizations face. First, how to induce independent nations to reduce their fishing efforts from the competitive equilibrium to prevent the fish stock from extinction or to increase profits. We argue that adjustment from the Nash equilibrium to a state of sustainable yield can be achieved by means of the proportional rule without harming any of the countries involved. Next we propose the population monotonic allocation scheme as management rule for the second problem: the division of profits within an

Social Cost-Benefit Analysis of Scientific Versus Traditional Shrimp Farming: A Case Study from India

Palavras-chave: Fishery management; Proportional rule; Population monotonic allocation scheme; Shapley value; Resource /Energy Economics and Policy; C71; C72; D62; D74; Q22.

Ano: 2006

URL: http://purl.umn.edu/31964

Bhattacharya, Poulomi; Ninan, K.N..

This paper attempts a social cost-benefit analysis of scientific versus traditional shrimp farming in West Bengal, India. Using primary data, the paper shows that although intensive or scientific shrimp farming yields high returns as compared to traditional shrimp farming, when the opportunity costs and environmental costs of shrimp farming including disease risk are accounted for, scientific shrimp farming loses its advantage. In fact sensitivity analysis shows that if expected benefits were to fall short by 15% and costs rise by a similar proportion, scientific shrimp farmers report higher losses than traditional shrimp farmers. But large traditional shrimp farmers continue to report positive net returns. These results are also most pronounced for small...

Fisheries and Aquaculture in the Lagoon of Orbetello

Palavras-chave: Shrimp Farming; Social Cost-Benefit Analysis; Net Present Value; Benefit- Cost ratio; Environmental costs; Opportunity cost; Risk; Environmental Economics and Policy; Livestock Production/Industries; Q22; Q51.

Ano: 2009

URL: http://purl.umn.edu/51227

Martino, S..

This paper is an introductory note on the lagoon of Orbetello, defining its environmental peculiarities and productive capacity. The aquaculture firms (both extensive and intensive) and their markets are presented from an economic point of view, focusing on the importance which the area can have as a district, according to the national and regional framework on fisheries. In particular, the unitary strategy adopted in managing the fishery involves the resolution of environmental problems and the coordination of trade to compete with products imported from other Mediterranean countries.

Marine Protected Areas in Fisheries Management

Palavras-chave: Fisheries and aquaculture management; Orbetello lagoon; Livestock Production/Industries; Q21; Q22.

Ano: 2005

URL: http://purl.umn.edu/56084

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.

Impact of Program Payments on Time Allocation and Farm Household Income

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

Dewbre, Joe; Mishra, Ashok K..

Using a model farm household resource allocation and data from the USDA-ERS Agricultural Resources Management Survey (ARMS), this study compares the effects of various categories of farm program payments on time allocation by farm operators and spouses. Results suggest that agricultural market transition payments (AMTA) increase leisure hours of both farm operators and spouses. Loan deficiency payments (LDP) and payments that combine market loan assistance (MLA) and disaster payments are shown to reduce leisure. The study also finds that AMTA payments exhibit a much higher degree of income transfer efficiency than the LDP and MLA payments.

Tipo: Journal Article

Palavras-chave: Agricultural Resource Management Survey; Decoupled payments; Government programs; Income transfer efficiency; Time allocation; Agricultural and Food Policy; Farm Management; D13; J22; Q12; Q22.

Ano: 2007

URL: http://purl.umn.edu/6296

Bang for the Buck: Cost-Effective Control of Invasive Species with Different Life Histories

Buhle, Eric; Margolis, Michael; Ruesink, Jennifer L..

Strategies for controlling invasive species can be aimed at any or all of the stages in the life cycle. In this paper we show how to combine biological data on population dynamics with simple economic data on control cost options to determine the least costly set of strategies that will halt an invasion. We then apply our methods to oyster drills (Ocinebrellus inornatus), an economically important aquaculture pest that has been accidentally introduced worldwide. If the costs of intervention were the same across life stages, extermination of adults would be an inefficient way to control species with the population dynamics characteristics of invaders. In the oyster drill case, however, efficient control targets adults because they are much easier to find.

Marine Reserves Switching under Uncertainty

Palavras-chave: Invasive species; Bioeconomics; Control strategies; Environmental Economics and Policy; Q10; Q2; Q22.

Ano: 2004

URL: http://purl.umn.edu/10793

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.

A Preliminary Study of the International Marketing of Shrimp

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

Castellini, Alessandra; Ragazzoni, Alessandro; Valentini, T..

This paper aims to supply a comprehensive account of a particular sector of the fisheries industry. TH increase of demand for fish products has involved an uncontrolled exploitation of marine reserves and fishing has reached its threshold of biological sustainability. For these reasons, aquaculture has grown in a corresponding manner in the recent past. The present survey starts from these considerations and aims to describe the general situation of world-wide, European and Italian aquaculture and then to examine the farming and marketing of a particular kind of product, Penaeus spp., which significantly affects global production in terms of value but not of quantity.

Catch-Quota Balancing in Multispecies Individual Fishing Quotas

Palavras-chave: Aquaculture and Fishery; Shrimp farming; International trade; International Relations/Trade; Livestock Production/Industries; Marketing; Q13; Q17; Q22.

Ano: 2005

URL: http://purl.umn.edu/56077

Sanchirico, James N.; Holland, Daniel S.; Quigley, Kathryn; Fina, Mark.

Individual fishery quotas (IFQs) are an increasingly prevalent form of fishery management around the world, with more than 170 species currently managed with IFQs. Yet, because of the difficulties in matching quota holdings with catches, many argue that IFQs are not appropriate for multispecies fisheries. Using on-the-ground-experience with multispecies IFQ fisheries in Iceland, New Zealand, Australia, and Canada, we assess the design and use of catch-quota balancing mechanisms. Our methodology includes a mix of interviews with fishery managers, industry representatives, and brokers, literature review, and data analysis. We find that a combination of incentives and limits on use rates for the mechanisms provide sufficient flexibility to the quota owner...

Efficiency Gains and Cost Reductions from Individual Transferable Quotas: A Stochastic Cost Frontier for the Australian South East Fishery

Palavras-chave: Natural resources; Created markets; Tradable permits; Resource /Energy Economics and Policy; Q22; Q28; D40; L10.

Ano: 2005

URL: http://purl.umn.edu/10543

Kompas, Tom; Che, Tuong Nhu.

In this paper efficiency gains and associated cost reductions from increases in traded quota are estimated with a stochastic cost frontier for the Australian South East Trawl Fishery (SETF). Estimation of this frontier also provides key information on the relative importance of input costs in the SETF, returns to scale, variations in costs as a result of trade in quota and the economic performance of each fishing vessel, year to year. Final estimations indicate that increases in the volume of quota traded have resulted in considerable efficiency gains and cost reductions in the SETF, ranging from 1.8 to 3.5 cents per kilogram for surveyed vessels for every one per cent increase in the volume of quota traded, or 1 to 2.4 per cent of total variable costs,...

Buyback Programs for Capacity Reduction in the U.S. Atlantic Shark Fishery

Palavras-chave: Individual transferable quotas; Stochastic cost frontier; Fishery efficiency; International Relations/Trade; Q22; Q28.

Ano: 2003

URL: http://purl.umn.edu/57907

Larkin, Sherry L.; Keithly, Walter R., Jr.; Adams, Charles M.; Kazmierczak, Richard F., Jr..

Declining fishery stocks, increasing fishing effort and adverse market conditions have produced difficult financial situations for fishermen worldwide. Several high-valued fisheries are considered to be overcapitalized. The purchase and permanent retirement of fishing vessels and/or permits under a buyback program is one approach for reducing fishing capacity. Evidence from previous programs, however, suggests that buybacks are not a panacea for solving overcapacity problems. Whether such programs can help rebuild stocks and improve the financial condition of fleets in any specific fishery depends on a multitude of factors. We consider the potential of a buyback program for the U.S. Atlantic shark fishery.

Tipo: Journal Article

Palavras-chave: Buyback programs; Fishing capacity; Fishing permits; Latent permits; Marine fisheries; Vessel decommissioning schemes; Q22; Q28.

Ano: 2004

URL: http://purl.umn.edu/43423

Fisheries policies impacts consideration towards the development of rural coastal areas

Loizou, Efstratios; Chatzitheodoridis, Fotis; Mattas, Konstadinos; Polymeros, Konstantinos.

The current study aims to examine the effectiveness of fisheries policies and specifically of the Greek Operational Programme for Fisheries, 2007-13. In specific, aims to examine and assess possible impacts generated, in the regional economy of Voreio and Notio Aigaio from its four axis, with particularity to the forth one. For this a regional Input-Output model was built in order to capture direct and indirect impacts in terms of output, employment and income. Results indicate that the dynamics of the fisheries sector in the regional economy are very weak and along with the continuous shrinking of the sector, leads to the necessity of supporting alternative vocational activities for the development of coastal rural areas. Though, results indicate that the...

Farming Fish in a Transitional Economy: A Case for East Timor

Palavras-chave: Rural coastal areas; Operational fisheries programme; Impact analysis; Regional analysis; Community/Rural/Urban Development; R11; R15; R58; Q22.

Ano: 2010

URL: http://purl.umn.edu/94910

Wood, Toby Ryan; Chan-Halbrendt, Catherine.

This case study evaluates the economic potential for a grow-out mariculture enterprise in East Timor while highlighting how such a business venture could help engage a transitional nation in foreign trade, increase employment opportunities and encourage community based projects that promote sustainable resource use.

Tipo: Journal Article

Palavras-chave: Aquaculture; Mariculture; Grouper; East Timor; Transitional economy; Agricultural and Food Policy; Q10; Q22.

Ano: 2008

URL: http://purl.umn.edu/53741

None-of-These Bias in Stated Choice Experiments

Alfnes, Frode; Steine, Gro.

We conduct a within-sample test of hypothetical bias and parameter equality between a hypothetical stated choice (SC) experiment using pictures and a real choice (RC) experiments using products. With exception of the none-of-these alternative-specific dummy, we cannot reject parameter equality between the two datasets. However, when we estimate the models separately with no parameter restrictions, the SC experiment gave WTP estimates that were approximately 50 percent higher and marginal WTP estimates that were almost two times as high as the corresponding estimates from the RC experiment. However, even though the monetary value of the WTP disparity was large, the disparity between the WTP estimates from the two data sets was not statistically significant.

The Effects of ITQ Management on Fishermen’s Welfare When the Processing Sector is Imperfectly Competitive

Palavras-chave: Choice experiment; Hypothetical bias; Color; Mixed logit; Salmon; Willingness to pay; Consumer/Household Economics; C81; C93; D12; Q22.

Ano: 2005

URL: http://purl.umn.edu/24761

McEvoy, David M.; Brandt, Sylvia J.; Lavoie, Nathalie; Anders, Sven M..

In this paper we use a general model of imperfect competition to predict welfare changes within an open-access fishery transitioning to individual transferable quota (ITQ) management. Although related research has explored the effects of market power in the harvesting sector on ITQ performance, none have considered the implications of an imperfectly competitive processing sector. This study addresses this question specifically in the context of the Atlantic herring fishery, although its implications are relevant to all fisheries with similar industry structure. Our results show that ITQs could have a negative impact on fishermen’s welfare when processors have market power and the cap on aggregate harvest is binding or becomes binding with the...