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Fisheries

2012-04-19

Eggert discusses sustainable fisheries in the EU

Håkan Eggert, Associated Professor in Environmental Economics, University of Gothenburg, is one of the panelists in a European Parliament panel discussion on Sustainable fisheries in the EU – getting incentives right on April 25. Other panelists are other researchers, a Swedish Fishermen’s Federation representative and Members of the European Parliament such as Isabella Lövin, author of the renowned book Silent Seas (Tyst hav).

2012-04-19

Sterner speaks at European Parliament about managing fishing overcapacity

Thomas Sterner, Professor of Environmental Economics, University of Gothenburg, speaks at a public hearing on the subject “The feasibility of Transferable Fishing Concessions in the context of Common Fisheries Policy Reform” organized by The Committee on Fisheries of the European Parliament on 24 April, at 15.30-18.30.

2008-11-03

"Overfishing depletes 'sangara' in Lake Victoria"

The Tanzanian newspaper Daily News, one of the biggest English newspapers in the country, interviewed Razack Lokina, fellow reseacher and coordinator of the EfD center in Tanzania, and Hakan Eggert, resident advisor and fellow researcher of the EfD center in Tanzania, on over fishing of Nile perch in Lake Victoria.

2014-03-01

Field Experiments on Cooperative Management of Local Common Resources

This project will use the tools of experimental economics to study behavioral issues related to both the protection of a common-pool resource from poaching by outsiders, and the enforcement of rules and norms to maintain compliance within a group.  The experiments are motivated by the Chilean abalone (loco) fishery and will be conducted in the field with members of local artisanal fishing

2013-11-28

Marine Protected Areas and Small-Scale Fishing Behavior: a Comparative Analysis between South Africa, Tanzania and Costa Rica

This thematic program examines marine resource conservation.  This multi-center collaborative project, the first within this thematic program, focuses on improving policy to promote coastal conservation through marine protected areas (MPAs) and related management tools.  Because signatories of the Convention on Biological Diversity have committed to establishing MPAs on 10 percent of their coastal waters, a widespread expansion of these areas is underway worldwide.

2013-07-11

The demand for recreational angling in South Africa: implications of alternative management options for a depleted fishery

Recreational angling is a popular past time in South Africa and has been shown to make a substantial contribution to the economy.  However, recreational fishing pressure has led to the severe decline and collapse of many of the species targeted in the fishery.  Recent studies suggest that both the numbers many of the fish species targeted have vulnerable life history strategies, with

2013-05-28

Evaluación Socio-Económica de la Aplicación de Medidas de Administración Sobre la Pesquería Mixta de Pequeños Pelágicos de la Zona Centro Sur

El Departamento de Análisis Sectorial (DAS) de la Subsecretaría de Pesca, Gobierno de Chile, licitó un estudio con el propósito de evaluar, desde un punto de vista socioeconómico, los efectos de la aplicación de medidas de administración sobre la pesquería de peces pequeños pelágicos de la Zona Centro – Sur. Este proyecto fue adjudicado por la Universidad de Concepción.

2010-03-26

Incentives to Cooperate with Marine Protected Areas As a Function of Location: Mnazi Bay Ruvuma Estuary Marine Park Case Study

As marine protected areas (MPAs) are applied in poor countries, and in particular in Mnazi Bay, Tanzania, managers recognize that the success of the MPA in protecting fish, biodiversity, and reefs stems from the response of local people – whether that response comes from direct enforcement activities or from incentives to cooperate with new restrictions. In Mnazi Bay, managers are combining enforcement of new regulations on fishing locations and technology with investments in community-based projects and resource management councils and widespread education efforts. In the terrestrial setting, integrated development-conservation projects (ICDPs) typically failed due to a lack of linkage between the development projects and conservation incentives and goals, leaving the development projects as compensation for losses associated with enforcement of access restrictions. MPA implementation seeks to avoid such failures and induce cooperation by focusing on projects that rely on healthy oceans and mangrove forests in addition to providing new technologies like larger mesh nets.

2009-03-01

Who should pay the enforcement costs of environmental and natural resource management policies?

Implementation and management of an ITQ fishery involves significant and costly administrative activities.  These activities include formulating and implementing policy rules, monitoring and enforcement to deter illegal behavior, and economic and marine research.  In this project we construct a model of a competitive ITQ system to analyze how the distribution of administrative costs b

2008-01-14

Booming Fish Exports and Relative Welfare of Local Communities: Empirical Evidence From Around Lake Victoria, Tanzania

The project aims at assessing the welfare implication of the booming fish export at the household level around Lake Victoria. With the experience of the pilot study conducted successfully last September by Andrea Mannberg –a Ph.D candidate who is also working in the project. Adolf Mkenda and John Mduma coordinate the project and other logistics for the final field work to be carried out in March-April 2008. They are in charge of organizing the term of interviewers from the Lake Victoria regions and also organizing the interviewee.

2019-06-11

Salmon farming vulnerability to climate change in southern Chile: understanding the biophysical, socioeconomic and governance links

Here we describe an assessment of climate-change vulnerability for the salmon farming sector in southern Chile using a model that combines semi-quantitative measures of Exposure (risks), Sensitivity (economic and social dependence), and Adaptation Capacity (measures that prevent and mitigate impacts).  The evaluation was carried out in 8 pilot communes representative of salmon production (marine grow-out).

2019-06-10

Impact of Caligus Treatments on Unit Costs of Heterogenous Salmon Farms in Chile

We measure the impact that sanitary treatments that control ectoparasite Caligus rogercresseyi abundance have on unit production costs of Salmo salar farms in Chile. We follow complete production cycles for a sample of farms between 2009 and 2015. We estimate a simultaneous salmon biomass growth and Caligus abundance model. The statistical analysis determines the effect of antiparasitic treatments, location of farms, environmental conditions and Caligus abundance on the salmon growth profile.

2019-06-10

Pending Issues and Challenges of Salmon Farming in Chile: A Socioeconomic Perspective

We identify and discuss the main problems and challenges in sustainable development faced by the salmon farming industry in Chile from a socio‐economic perspective. This perspective is broad, in that it includes how the industry interacts with society and the environment, but also limited, in that it only assesses the impact on different social groups and economic agents. First, we present a brief description of the structure and socio‐economic relevance of salmon farming in the country.

2019-06-09

Co-management of small-scale fisheries and ecosystem service

Marine ecosystem services are in global decline which requires new transformational changes in governance to cope with multiple anthropogenic stressors. We review the biodiversity and ecosystem services outcomes of a governance transformation towards comanagement through the allocation of territorial user rights to artisanal fisher associations (TURFs). Through a systematic review we synthesize the implications of more than 25 years of establishing a TURFs policy over ecosystem services in Chile.

2019-06-09

Exploring Dual Discount Rates for Ecosystem Services: Evidence from a Marine Protected Area Network

This paper presents a joint estimation of willingness to pay for conservation activities aimed to preserve the flow of ecosystem services provided by a marine protected area network and respondents´ personal discount rate using a contingent valuation survey. It contributes to the literature on identifying people´s discount rates moving beyond the use of the exponential schemes, to include a hyperbolic discount rate through variations in the timing and duration of the provision of public goods.

2019-05-30

Local response to global uncertainty: insights from experimental economics in small-scale fisheries.

Global change has systematically increased uncertainty for people balancing short-term needs with long-term resource sustainability. Here, we aim to understand how uncertainty drives changes in human behavior and the underlying mechanisms mediating use of behavioral strategies. We utilize a novel behavioral approach – dynamic common-pool resource economic experiments in the field – and apply it to small-scale fisheries as a system that is particularly vulnerable to global change.

2019-05-28

Spillover from marine protected areas on the pacific coast in Colombia: A bioeconomic modelling approach for shrimp fisheries

Marine protected areas are currently recognized as an alternative for the conservation of marine ecosystems. Although the protection reduces the area available for fishing, it has been argued that the spillover effect can increase resources in the adjoining areas. The purpose of this study is to calculate the value of the provision of fishing resources resulting from an increase in the system of marine protected areas in Colombia.

2018-07-28

Managing and Defending the Commons: Experimental Evidence from TURFs in Chile

This work presents the results of framed field experiments designed to study the joint problem of managing harvests from a common pool resource and protecting the resource from poaching. The experiments were conducted both in the field with TURF users and in the lab with university students. Our study has two objectives. First, we designed our experiments to study the effects of poaching on the ability of common pool resource users to coordinate their harvests when encroachment by outsiders is unrestricted and when the government provides weak enforcement.

2018-07-17

Fishing community preferences and willingness to pay for alternative developments of ecosystem-based fisheries management (EBFM) for Lake Naivasha, Kenya

Ecosystem-based fisheries management (EBFM) is an important complement to existing fisheries management approaches to maintain ecosystem health and function; to translate goals and aspirations for sustainability into operational objectives, the preferences of the fishing communities should be considered for successful implementation of EBFM. This study analysed the preferences of the fishing community for alternative EBFM developments for Lake Naivasha, Kenya, and estimated the willingness to pay, using a choice experiment approach.

2018-06-25

Stakeholder perceptions of enhancement opportunities in the Chilean small and medium scale mussel aquaculture industry

The Chilean mussel aquaculture industry is a prime example of a thriving industry.  However, the industry growth rate, aquaculture concessions and market prices have stabilized signaling a shift in the industry from exponential growth to, if handled correctly, economic stability.  Here we used perception research, an efficient tool to inform on the implementation of management strategies, to provide policy makers with the tools necessary for the development of strategies that will aid in the sustainability of the industry through its current shift.  We assessed the perception

2018-06-24

Share Contract Choices and Economic Performance: Empirical Evidence from the Artisanal Fisheries Sector in Chile

Typically, crew members in fisheries are remunerated through a share of the total revenues. However, there is little empirical evidence on the mechanisms by which revenues are distributed to labor and capital, and how these distributions affect economic performance. Under an agency problem framework, we estimate a dose-response function to study the formation of contracts and identify the marginal effects of changes in crew profit shares on fishing returns in Chilean artisanal fisheries. The results support share contract choices

2018-06-19

¿Ha contribuido el desarrollo de la salmonicultura en la Región de Los Lagos a la reducción de la pobreza rural? Una mirada empírica desde ingreso

We analyze if poorest people in rural localities of Región de Los Lagos, Chile have benefited in terms of poverty alleviation with salmon farms establishment within 1992-2002 period.  In order to assess the impact of this event on poverty, we compare areas with and without salmon farms.  We calculate poverty rates through small area estimation models at household level and we approach through differences in differences.  Our findings suggest, that poverty decreased more in localities with salmon farms than in those who do not.  We also identify geographic distances, betw

2018-06-19

Exploring typologies of artisanal mussel seed producers in southern Chile

Aquaculture is on the most dynamic food production systems in the world, with a fast expansion, especially in developing countries.  Among this sector, the Chilean mussel industry has experienced a substantial increase, turning Chile into one of the leading producers and global exporters of mussels.  Among the different links in the mussel production chain, the natural seed collection conducted by artisanal fishers of southern Chile has been a fundamental pillar for the development of the industry.  Often, this sub-sector  has been thought of as a  homogeneous group

2018-06-11

Local response to global uncertainty: insights from experimental economics in small-scale fisheries.

Global change has systematically increased uncertainty for people balancing short-term needs with long-term resource sustainability. Here, we aim to understand how uncertainty drives changes in human behavior and the underlying mechanisms mediating use of behavioral strategies. We utilize a novel behavioral approach – dynamic common-pool resource economic experiments in the field – and apply it to small-scale fisheries as a system that is particularly vulnerable to global change.

2018-06-09

Flawed evidence supporting the Metabolic Theory of Ecology may undermine goals of ecosystem-based fishery management: the case of invasive Indo- Pacific lionfish in the western Atlantic

Given its ability to yield predictions for very diverse phenomena based only on two parameters—body size and temperature—the Metabolic Theory of Ecology (MTE) has earned a prominent place among ecology’s efficient theories. In a seminal article, the leading proponents of the MTE claimed that the theory was supported by evidence from Pauly’s (On the interrelationships between natural mortality, growth parameters, and mean environmental temperature in 175 fish stocks.

2018-05-18

Ecological Restoration and Livelihood: Contribution of Planted Mangroves as Nursery and Habitat for Artisanal and Commercial Fishery

Restoration of degraded and depleted mangrove habitats and planting of mangroves over coastal mudflats is happening at many places, but there are few studies that evaluate the flow of ecosystem services from these regenerated ecosystems. The state of Gujarat in Western India has planted thousands of hectares of mangroves over the coastal mudflats and, today, the state’s mangrove cover is nearly double that in the 1930s. However, these mangroves have limiting features: for example, these are mostly single-species, Avicenna marina, and are sparse, and lack freshwater supply.

2018-03-27

    Measuring Potential Rents in the North Sea Herring Fishery

    This paper assesses the potential for rent generation in the North Sea herring fishery. The assessment distinguishes between rents and intra-marginal profits—the sum of which constitutes variable profits in the fishery. A bioeconomic model combining fish population dynamics and the economics of the fishery is constructed to allow the computation of these different components of profits. In order to assess the dynamics of both rents and intra-marginal profits, the model is computed under various assumptions with regard to price, costs, and discount rates.

    2017-08-24

    Economic Incentives, Perceptions and Compliance with Marine Turtle Egg Harvesting Regulation in Nicaragua

    La Flor Wildlife Refuge and nearby beaches on the Pacific coast of Nicaragua are important nesting sites for various species of endangered marine turtles. However, illegal harvesting of turtle eggs threatens the survival of marine turtles. In this study, we analysed the different motivations of local villagers for complying with a ban on harvesting marine turtle eggs in a context, in which government authorities do not have the means to fully enforce existing regulations.

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