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

Borsky, Stefan; Raschky, Paul A..

This paper provides an empirical analysis of the role of intergovernmental relations on a country's effort to enforce the objectives of an international environmental agreement on an open access resource. Intergovernmental interaction allows signatory countries to observe compliance behavior of other signees and to punish non-compliance by applying bi- and multilateral sanctions. We use a cross-sectional dataset that contains country level information about compliance with Article 7 of the 1995 UN Code of Conduct for Responsible Fisheries. Our identification strategy combines a spatial autoregressive model with spatial autoregressive disturbances and an instrumental variable approach. We find a strong positive effect of other countries' compliance on the...

Tipo: Presentation

Palavras-chave: International environmental agreements; Open access resources; Spatial econometrics; Environmental Economics and Policy; C21; F53; Q22.

Ano: 2012

URL: http://purl.umn.edu/124425

Bioeconomic Evaluation of Substitution of Balanced Feed with Chaya (Cnidoscolus Chayamansa) Leaves in Tilapia Production

Poot-Lope, Gaspar Roman; Gasca-Leyva, Eucario.

In Mexico, the culture of tilapia has developed in rural areas, where the main problem is low producer income. The state of Yucatan also experiences this situation, and scarcity of money needed to purchase inputs results in complementary feeding with chaya (Cnidoscolus chayamansa), whose leaves are edible for humans and animals. In this situation, CINVESTAV conducted experiments to determine the optimal level of substitution of balanced feed with ray chaya leaves. The test with 25% and 50% reduced balanced feed complemented with chaya (ad libitum) did not show significant differences (P>0.05) in growth compared to fishes fed with a complete ration of balanced feed (100% feed table). A bioeconomic model was developed, including a submodel of growth...

Non-Market Values and Optimal Marine Reserve Switching

Palavras-chave: Bioeconomic model; Cost minimization; Tilapia; Livestock Production/Industries; O13; Q22.

Ano: 2005

URL: http://purl.umn.edu/55999

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

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.

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

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

Ano: 2004

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

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,...

Credit Accessibility, Risk Attitude, and Social Learning: Investment Decisions of Aquaculture in Rural Indonesia

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

Ano: 2003

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

Miyata, Sachiko; Sawada, Yasuyuki.

This study examines the factors that influenced poor Indonesian farmers to invest in floating net aquaculture after being relocated due to a reservoir construction project. To compare three primary decision factors, credit accessibility, risk attitudes, and social learning, (i.e., learning effects from others experience), we analyze 16 years of socio-economic retrospective data collected in the field interviews exclusively for this study. Our analysis reveals that credit accessibility and risk attitudes are the most important factors that influence the rate of aquaculture investment. Social learning as well as household education also influences the investment decision significantly. Our results suggest that developmen t projects that involve voluntary...

Designing a Cost-Effective Marine Reserve Network: A Bioeconomic Metapopulation Analysis

Palavras-chave: Household investment decision; Credit constraints; Risk attitudes; Social learning; Panel data; Farm Management; D1; D8; D12; Q22.

Ano: 2006

URL: http://purl.umn.edu/25669

Sanchirico, James N..

Marine reserves are gaining attention around the world as a tool to both conserve ocean resources and improve the productivity of fisheries. Using simulation analysis, we investigate in a limited-entry fishery comprising nine subpopulations the inherent bioeconomic trade-offs associated with cost-effective designs of marine reserve networks' that is, the trade-offs between the degree of connectedness of a site and the biological and economic heterogeneity. We find in many cases that closing two low-value patches can result in larger biological gains and lower costs than closing one high-value patch. We also simulate biological productivity effects after creation of a reserve and find that under special conditions, aggregate sustainable rents are maximized...

Il quadro normativo sulle denominazioni commerciali dei prodotti ittici nella gestione delle frodi: strumento di gestione o problema irrisolto?

Palavras-chave: Limited-entry; Marine reserve networks; Spatial management; Resource /Energy Economics and Policy; Q22.

Ano: 2003

URL: http://purl.umn.edu/10624

Gaviglio, Anna; Pirani, Alberto; Demartini, Eugenio.

Authors suppose the amounts of fraudulent seafood sales reported in recent years to be somehow correlated to the problems of Italian commercial fish-naming policy. However, given the lack of data and studies, the work has an exploratory nature focusing on three main issues: the seafood labeling policy framework, the evolution of lists of fish species’ trade names and the spread and type of fraudulent sales. According data authors believe that the fish-naming system is improving, however that lack of studies estimating the right amount of diversification in trade names for marine species seems so to be a weakness for a winning policy. Furthermore, seafood retailers seems to assume an important role on fraud management and government should support research...

Tipo: Presentation

Palavras-chave: Fish products; Labeling; Consumer protection; Research perspectives; Agribusiness; Agricultural and Food Policy; International Relations/Trade; L15; Q18; Q22.

Ano: 2012

URL: http://purl.umn.edu/130451

Input and Quality Controls: A Stochastic Frontier Analysis of Bangladesh’s Industrial Trawl Fishery

Chowdhury, Nanzeen Kawshar; Kompas, Tom; Kalirajan, Kaliappa P..

This paper examines the effectiveness of different management tools, particularly input and quality controls on Bangladesh’s industrial trawl fishery. Results show that the efficiency of industrial trawl fishery comes from multiple owner managed vessels, export oriented vessels and registered vessels that are mainly engaged in double rigger trawling. Results also indicate that freezer vessels with small storage capacity, using small gear are relatively less efficient. This study shows that there is no depletion or reduction in marine fish stock over the period and shrimp vessels are technically more efficient than fish vessels.

Fisheries and Aquaculture in the Lagoon of Orbetello

Palavras-chave: Industrial trawl fishery; Input and quality control; Efficiency; Bangladesh; Production Economics; Q22; Q28.

Ano: 2010

URL: http://purl.umn.edu/58888

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.

Buyer and Seller Responses to an Adverse Food Safety Event: The Case of Frozen Salmon in Alberta

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

Ano: 2005

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

Maynard, Leigh J.; Saghaian, Sayed H.; Nickoloff, Megan.

Fish is a low-fat protein source high in omega-3 fatty acids, but in 2004 consumers also heard that farmed salmon had high levels of polychlorinated biphenyl (PCBs). This research evaluated how Canadian consumers and processors reacted to the conflicting health messages. Demand estimates and time-series analysis of 2001-2006 frozen meat scanner data in Alberta, Canada show a significant drop in salmon expenditure share following the PCB finding. The industry responded by launching low-priced wild salmon products, which contributed to significant demand expansion. The analysis illustrates how a food safety threat was averted and even served as a catalyst for growth.

Tipo: Journal Article

Palavras-chave: Salmon; Scanner data; Food safety; Demand; Directed acyclic graphs; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Research Methods/ Statistical Methods; Q10; Q11; Q16; Q22.

Ano: 2008

URL: http://purl.umn.edu/53629

Transferable Rights of Recreational Fishery: An Application to Red Snapper Fishery in the Gulf of Mexico

Kim, Hwa Nyeon; Woodward, Richard T.; Griffin, Wade L..

Transferable rights (TRs) programs are being increasingly considered in fisheries to overcome current overfishing situation. This paper will focus on developing a conceptual foundation, investigating advantages of the TRs program in fishery management, and answering critical issues to implement recreational TRs programs. Implication is to the Gulf of Mexico red snapper fishery.

Fisheries policies impacts consideration towards the development of rural coastal areas

Palavras-chave: Transferable Rights; Individual Transferable Quota; Recreational Fishery; Resource /Energy Economics and Policy; Q22.

Ano: 2005

URL: http://purl.umn.edu/19261

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...

Economic Evaluation of Catch Share Program: Rhode Island Fluke Fishery Sector Pilot Program

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

Anderson, Christopher M.; Uchida, Hirotsugu; Scheld, Andrew M..

High-Grading in a Quota-Regulated Fishery, with Empirical Evidence from the Icelandic Cod Fishery

Palavras-chave: Catch share; Sector allocation; Fishery management; Demand and Price Analysis; Resource /Energy Economics and Policy; Q22; Q28.

Ano: 2010

URL: http://purl.umn.edu/61729

Kristofersson, Dadi; Rickertsen, Kyrre.

Fishers in quota-regulated fisheries find it to their advantage to discard less valuable fish at sea to increase the value of their catch. A theoretical model describing the high-grading behavior of fishers is presented, and an empirical model is derived as well as a testing strategy to test for high-grading and to estimate the discarded amount of each grade. The model is applied to data for the Icelandic quota regulated cod fishery during the period September 1998 to June 2001. The results indicate that highgrading occurs in the Icelandic cod fishery for both long-line and net vessels. However, the discard rates are small, and the results clearly suggest that the ban on discards in Iceland has effectively dealt with high-grading. The estimated discard...

Asset Pricing in Created Markets for Fishing Quotas

Palavras-chave: ITQ's; Highgrading; Empirical estimation; Resource /Energy Economics and Policy; Q21; Q22; C12.

Ano: 2005

URL: http://purl.umn.edu/24722

Newell, Richard G.; Papps, Kerry L.; Sanchirico, James N..

We investigate the applicability of the present-value asset pricing model to fishing quota markets by applying instrumental variable panel data estimation techniques to 15 years of market transactions from New Zealand's individual fishing quota market. In addition to the influence of current fishing rents (as measured by lease prices), we explore the effect of market interest rates, risk, and expected changes in future rents on quota asset prices. Controlling for these other factors, the results support a fairly simple relationship between quota asset and contemporaneous lease prices. Consistent with theoretical expectations, the results indicate that quota asset prices are positively related to declines in interest rates, lower levels of risk, expected...

El cluster pesquero de Chimbote: acción conjunta limitada y la tragedia de los recursos colectivos

Palavras-chave: Tradable permits; Individual transferable fishing quota; Asset pricing; Fisheries; Policy; Resource /Energy Economics and Policy; Q22; Q28; D40; L10.

Ano: 2005

URL: http://purl.umn.edu/10639

Kuramoto, Juana R..

Chimbote es uno de los principales puertos pesqueros del Perú y alberga una parte importante de las fábricas de harina de pescado del país. Sin embargo, luego de más de cincuenta años de existencia, este puerto está lejos de haberse convertido en un cluster dinámico formado por negocios pesqueros altamente especializados y diversificados. Este trabajo pretende explicar esta situación, usando como tesis que la acción conjunta es primordial en el desarrollo de los clusters dinámicos y que ésta se ve obstaculizada en las actividades económicas que no cuentan con derechos de propiedad claramente establecidos, como es el caso de la pesca de anchoveta. La falta de acción conjunta se aprecia en la persistencia de problemas que afectan la eficiencia colectiva...

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

Palavras-chave: Pesca; Puertos pesqueros; Industria pesquera; Desarrollo pesquero; Desarrollo económico; Perú; Fishery; Fishing ports; Fishery industry; Fishery development; Economic development; Peru; Q22.

Ano: 2005

URL: http://purl.umn.edu/37730

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

Can Co-Management Improve the Governance of A Common- Pool Resource? Lessons From A Framed Field Experiment in A Marine Protected Area in the Colombian Caribbean

Moreno-Sanchez, Rocio del Pilar; Maldonado, Jorge Higinio.

Complexities associated with the management of common pool resources (CPR) threaten governance at some marine protected areas (MPA). In this paper, using economic experimental games (EEG), we investigate the effects of both external regulation and the complementarities between internal regulation and non-coercive authority intervention—what we call co-management—on fishermen’s extraction decisions. We perform EEG with fishermen inhabiting the influence zone of an MPA in the Colombian Caribbean. The results show that co- management exhibits the best results, both in terms of resource sustainability and reduction in extraction, highlighting the importance of strategies that recognize communities as key actors in the decision-making process for the...