Indonesian tuna fisheries are complex due to variation in the scale of fleet in the fisheries, their multi-species nature and problems with data collection. Moreover, like many developing-country fisheries, their management needs to take into account many other goals besides rents maximization, such as the distribution of rents and the...
Nigeria’s domestic supply of fishery products falls short of the demand; however, there is a growing aquaculture industry that has come to the rescue in filling the gap between supply and demand. Most of the aquaculture fish farmers are prone to the risk of climate change, since weather and extreme...
Most of fish farmed by small scale producers in developing countries is sold directly to local markets without passing through a processing industry. Besides problems related to sanitary requirements, this situation highlights the low added value retained by fish farmers. In Brazil, the integration between small scale fish farmers and...
The paper focuses on the combination of the cooperative fisheries management with the non-cooperative literature. It has important modeling contributions by creating a new framework on co-management. The structure of the model is repeated coalition game with the possibility to deviate combined with introduction of a variation of a club...
Quantitative fish stock assessment methods have become increasingly complex. However, the quality of available data may still restrict their applicability, being a particular concern in data-poor situations and where management decisions rely on either commercial fisheries or scientific survey data. In this study we address this issue by proposing a...
What is the impact of the recent spike in Eastern Atlantic and Mediterranean bluefin tuna catch on the global price of bluefin and its substitutes? Will boosting the eastern bluefin quota even further benefit the fishing industry? And who stands to win and lose from supply increases? Using a novel...
Under the IIFET 2018 Special Session “Tools for Stock Assessment, Economic Fishery Analysis, and Risk Assessment for Sustainable Management Strategies of Data Poor Stocks in Mixed, Small Scale and Indigenous Fisheries” a number of stakeholder presentations addressed the current status, challenges, needs and future perspectives for implementation of management and...
Ocean health is a major concern for coastal communities dependent on the ocean for their livelihood. Recent changes in in ocean health force researchers to examine the factors that influence the decline in ocean health. The paper developed production functions using the Global Ocean Health Index (OHI) for 2014 and...
Stated preference (SP) methods such as contingent valuation and choice experiments are often used to estimate values associated with marine and coastal ecosystem services. However, applications do not always apply best practices, leading to questions regarding the validity and relevance of welfare estimates. This presentation outlines contemporary best-practice recommendations for...
A vessel-based bio-economic model (IAM) is presented and applied to the Bay of Biscay sole fishery to investigate alternative quota management systems from a multi-criteria perspective. For this study, the model integrates several institutional arrangements related to catch share management. The current French co-management system with non-transferability of quota is...
Although the formal process of Brexit has started, there is high uncertainty about Brexit’s impacts on the future of demersal mixed fisheries in the North Sea. As migratory demersal stocks (e.g. cod, haddock, hake and saithe) traverse the zones of various countries, one challenging issue is to agree on how...
Regulators in many countries have adopted quotas as a means of dealing with the open access problem inherent in fisheries. Unit quotas for the Norwegian purse seine fleet were introduced in 1996 but consolidation of licenses has been in place since 1978. The current Norwegian regulatory system does allow for...
Using theoretical trade model of generali equilibrium, the paper consider non-cooperative decision of interior solutions of fishery amounts and resource price under integrated market price as constraints. The paper proved non-existence of interior solitions equilibrium under the conditions with very generalized robustness in not only stationary equilibrium but also transition...
The fisheries sectorof Sri Lanka means of livelihoodfor 2.6 million peopleand the vast majority of themare involved in small scale fisheries. The study was taken up with the objectivesof to identify social &political membership status of small scale fishery value chain members, to assess the level of decision making power...
The fisheries sector faces the challenge of determining effective management, in an ecosystem perspective in order to mitigate the Global Warming Potential (GWP).The main focus of the study was to analyze the resource utilization in the value chain of Maldives fish processing and the environmental performances of the steps involved....
Any fisheries governance system is made up of policies and institutions in the broad sense of the term that govern the sector. When a system of governance is unsatisfactory, in particular because of the inadequacies and dysfunctions of these policies and institutions, and the way in which public action is...
Historically, cod fishing along the coast of northern Norway has been about fishing as much as possible with the least possible resource effort. This traditional logic is rooted in biology (cod’s migration pattern), meteorology (weather conditions) and traditional capture technology (small and not as seaworthy boats). The logic is further...
This study identifies differences in fishing efficiency of vessels operating in the Nha Trang purse seine fishery in Vietnam. The deterministic DEA methodology is used to assess relative capacity utilization of the fishing fleet. Double bootstrap DEA method is adopted to overcome some of the drawbacks of nonparametric DEA methodology...
The National Oceanic and Atmospheric Administration (NOAA) executes a number of activities that support a more holistic way of studying and managing marine resources, namely an ecosystem-based approach to management (EBM). This presentation will provide an overview of NOAA’s Integrated Ecosystem Assessment (IEA) program as well as Large Marine Ecosystem...
As fisheries management is increasingly required to consider the full impacts of their operations, this work seeks to define the relationship between fishing effort and interactions with listed endangered species. The study employs logbook data containing over 64,000 sets, matched with observer data from 2008 to 2015 in an undisclosed...
Strategies for increasing production of goods from working and natural systems have raised concerns that the diversity of species on which these services depend may be eroding. This loss of natural capital threatens to homogenize global food supplies and compromise the stability of human welfare. We assess the trade-off between...
Fishers exploit populations that are heterogeneously distributed in space and time without full knowledge of species distributions and with fishing gear that is not fully selective. The ability to change catch composition is limited by species mix at a particular location and time and the capture characteristics of the fishing...
Catch shares are being increasingly adopted worldwide to halt overfishing and improve ecosystem outcomes. Rights-based fisheries management generates economic efficiency, and fishers with a financial stake in the fisheries are believed to have the incentive to become ecological stewards. However, the empirical evidence shows no significant impact of catch share...
Protected areas (PAs) are important for biodiversity conservation and can provide the benefits for current and future generations. Management effectiveness is a key factor to achieve outcomes of PAs. However, success is related to the enforcement implemented. Corruption is one of the main issues impacting and weakening enforcement. This article...
We present a bottom-up analysis of the proportion of global marine fisheries subsidies to small-scale fisheries (SSF). Using existing data, we split the reported national subsidy amounts into the fraction that goes to small- compared to large-scale fishing sectors. Results reveal a major imbalance in subsidy distribution, with SSF receiving...
Lake Michigan is the only Great Lake that supports an economically viable salmonid population, but a collapse may be on the horizon. Biomass of Chinook Salmon, the most popular sportfish in the region, decreased by 70 percent between 2013 and 2015. The decline is thought to be irreversible. Managers must...
Almost all recent empirical literatures that study the subjective wellbeing of fishers lack of relevant control as they are only based on surveys among fishers. Therefore, they cannot really answer whether being a fisher generate higher or lower life satisfaction, after controlling for other aspects of life. This study is...
In this paper we discuss dynamic adjustment paths towards economic optimal steady-state equilibrium in a fishery where two species interact through a traditional predator-prey relation. We set-up a general bio-economic predator-prey model based on the assumption that fishing effort is a public input applied when exploiting the fish stocks. By...
Marine recreational fishery plays an important role in developing marine economy and traditional fishery transformation. Recently the development of Marine recreational fishery has hit a bottleneck, traditional marine recreational fishing industry needs rapid change. Marine recreational fishery new format as an existing form of Marine recreational fishery industry has opened...
There are a range of smaller-scale fish farms operating in Ghana producing mainly tilapia and catfish based on extensive (stocking of small reserviours), intensive and semi-intensive (earthen ponds & tanks) techniques. Aquaculture production in Ghana plays a significant role in the economic development of livelihoods of fish farmers and contributes...
European carp farmers face many challenges in our days. Changed consumer habits, droughts, fish loss through birds endanger their profitability. Our study have selected two European carp regions as case study: The Aischgrund in Germany and Barycz Valley in Poland. Since the new millennium, opinion leaders have introduced initiatives to...
Implemented in 2011, the West Coast Groundfish Trawl Catch Share Program was designed to achieve multiple economic goals and objectives for a diverse multispecies fishery, including increasing net benefits, profitability, flexibility, and utilization of harvest allocations. Here, we leverage seven years of comprehensive cost and earnings data to evaluate progress...
This paper is designed to “set the stage” for the Special Session on Game Theory and Fisheries. It traces the origins of the application of game theory to fisheries economics, noting that, for the first quarter of a century after the publication of H. Scott Gordon’s 1954 seminal article, the...
The fisheries sector is a vital oceanic resource that build the core of the Blue Economy. However the realization of the full potential of the Blue Economy calls the requirement of effective inclusion of all societal groups, especially women whose contribution is not well acknowledged. The study focused to investigate...
Climate change has been observed to have a significant impact on the distribution of aquatic species and productivity of aquaculture systems across the globe. This affects the level of food production, the livelihoods of communities that depend on fisheries and aquaculture, and the future sustainability of these sectors. As in...
Coral reef ecosystems provide many important services to society. Their importance is not only proved by their beauty but also because they provide food and livelihood for millions of people in communities around the world, especially in developing countries. This paper estimates the economic value of coral ecosystems and potential...
In developing countries, small scale or artisanal fisheries catch data-collection systems, are not performing satisfactorily. This is due to the systems not giving out what is needed for assessing the appropriate fisheries, policy and management decisions, tracking the trends of exploitation of fishery resources and the overall performance of existing...
The U.S. Atlantic pelagic longline fleet pursues highly migratory species (e.g., swordfish, tunas, and sharks) over an extensive range in the Atlantic, Gulf of Mexico, and Caribbean Sea. Because of the fleet’s diverse range and vessel characteristics, fuel can be a major component of vessel operating costs and can make...
Seafood is one of the most valuable and highly traded commodities worldwide, and thus highly susceptible to fraud. The Norwegian fisheries sector is subject to a wealth of regulatory requirements ensuring an environmentally and economically sound fishery. Nonetheless, studies have shown that there exists a, at times significant, discrepancy between...
The aim of this research is to identify the effort of the Icelandic fishing fleet since 1950 with focus on the cod fishing fleet in Icelandic fishing grounds. Various historical records and citizen research in Iceland provide unique information and do allow for the total reconstruction of the decked vessel...
Recent international negotiations have highlighted the need to protect marine diversity on the high seas—the ocean area beyond national jurisdiction. However, restricting fishing access on the high seas raises many concerns, including how it would impact food security. Here we analyze high seas catches and trade data to determine the...
Climate projections indicate that ocean temperatures will continue increasing, potentially shifting the distribution of marine fish species and affecting the economics of the fishing industry and fishing communities. In this study, an integrated ecological-economic framework is used to evaluate the economic impacts of climate-driven species changes and assesses the value...
Poaching is a major problem under the Chilean system of territorial use rights in fisheries (TURFs). Organizations of artisanal fishers that are granted spatial property rights through TURFs combat poaching by establishing their own enforcement. Although an organization must protect its benthic resources against poachers from both within the organization...
This paper presents a deterministic bioeconomic model with a marine protected area (MPA) including both fisheries management and tourism development goals. A weighting parameter is added to the model to allow tradeoffs between management preferences regarding the two sectors affected by the MPA. The theoretical model is illustrated with analysis...
We provide an initial look at our follow up study on the impact of the Affordable Care Act (ACA) on U.S. commercial fisheries. Earlier work found that in the years immediately preceding the passage of the ACA, North Carolina’s commercial fishermen were more likely to purchase health insurance coverage on...
In the North East Atlantic there are several straddling stocks, including herring, mackerel, and blue whiting, which are exploited both within coastal states' 200 nautical mile Exclusive Economic Zones (EEZ) and on the high seas. The pelagic fisheries of the North East Atlantic are all harvested by the same six...
A suite of metrics may be required to characterize ecosystem status and its resilience. Simplistic models, not accounting for the age composition complexity, can fail in predicting the impacts of anthropogenic activities and may not appropriately evaluate long-term consequences of management. Old-growth age structure is necessary for maintaining long-term sustainable...
The Abalone Fishery is one of Victoria's most valuable commercial fisheries and almost all of the catch is exported to international markets, predominately in Asia. An outbreak of a virus called the Abalone Viral Ganglioneuritis (AVG) decimated one third of Australia’s abalone, starting in 2005. However, there has been little...
Understanding and quantifying the behavior of fishers is important given the role human behavior plays in fish population dynamics and fisheries management. Various quantitative and qualitative methods have been used to collect information on the behavior of fishers. This study discusses the benefits and drawbacks of three of these methods:...
The importance of land infrastructure for supporting coastal fisheries has long been acknowledged; its role in remote and geographically challenged fishing communities in the Nordic Arctic has visibly impacted community structure and development. This paper explores the Red King Crab (RKC) fishery in Norway and the ways in which its...
The status of fishing industry participants and fishing communities is an increasingly important consideration in marine ecosystem models and in fisheries management. Metrics that reliably measure economic, health, and other dimensions of human well-being are required to analyze the impacts of changes in marine ecosystems and policy. To date, most...
Feedbacks between the ecosystem and the economy are important to consider when measuring impacts from a disturbance but are often missed in representations of the economy and the food web. Moreover, regional general equilibrium models often focus on how humans respond to ecological changes and do not consider that in...
Fisheries products are the worlds most widely traded foods. Despite the fact that global demand for fish and fishery products continues to rise every year, fish export from the developing world have faced many limitation from non-conformity with international standards to inadequate product certification. As international fisheries trade grows, governments,...
Managing internationally-shared fish stocks, those that migrate from one country’s coast to another is incredibly difficult and requires international cooperation. The International Commission for the Conservation of Atlantic Tunas (ICCAT) is the regulatory body responsible for managing tuna and tuna-like species in Atlantic and adjacent seas fisheries. Although ICCAT has...
In France, the absence of further development of marine fish farming over the last 20 years has been attributed to regulatory constraints, and to the difficult access to new farming sites, due to high competition between different uses in the coastal zone. The Regional schemes for the development of marine...
Based on stochastic frontier analysis, this paper estimates the technical efficiency of aquaculture in 29 provinces and cities in China from 2007 to 2015. Based on this, the output elasticity of each input factor and the influencing factors of technical efficiency are analyzed. The results show that the whole of...
Lake Chapala’s fisheries have been the support of an important economic activity for hundreds of years. At the end of the XIX century, in addition to the fishers, the processing industry employed hundreds of families in the drying and salting of fish. The later introduction of carpe and tilapia forced...
Birds, mammals, and fish eat Atlantic Herring. For the first time, fisheries managers in New England are explicitly considering these, and other, predators when setting harvest control rules for the Atlantic Herring fishery. Based on single-species biological reference points, the herring stock is currently well above MSY levels. However, management...
The large lakes (Victoria, Albert, Kyoga, George, and Edward), covering 75% of Uganda’s surface area under contribute up to 90% of the capture based fisheries production. Until the late 2000s, the commercial fisheries in these lakes was largely based on species that grow to large sizes (> 20 cm) including;...
Stated choice random utility frameworks are a valuable tool for eliciting the preferences of fishermen. In typical applications, choice outcomes are known prior to choice selection, which may confound results when outcomes are uncertain. To evaluate the importance of uncertainty in decision making, we applied a contingent sequential stated choice...
The welfare gains from incorporating ecosystem considerations into fisheries management are unclear and can vary widely between systems. Additionally, welfare gains depend on how ecosystem considerations are adopted. This paper uses an empirically parameterized bioeconomic model to explore the welfare implications of two definitions of ecosystem-based fisheries management (EBFM). We...
The assessment of data-limited fish stocks is crucial for the sustainable management of marine living resources. Dependent on the scope and type of available data, a range of assessment methods are available, such as catch-only, length-based, or catch and survey-based methods. However, these methods suffer from several shortcomings, such as...
South Pacific albacore is a species of primary importance in the longline fishery of a number of Small Island Developing States in the Western and Central Pacific Ocean. Despite the fact that the stock is assessed as not being subject to overfishing, nor overfished, economic returns have declined significantly over...
Scarcity of wild-caught seafood has incentivized innovation and growth in aquaculture, especially for species that compete directly with wild alternatives. In the global tuna industry, the most pronounced scarcity is associated with bluefin tuna species (Atlantic, Pacific, and Southern, which serve similar markets). Supply-side factors including overfishing and governance challenges...
This work is part of the SUCCESS project (Work Package 4: Competitiveness and sustainability of European fisheries and Aquaculture sectors) funded by the EC (H2020, GA 635188). The dynamics of the value chain in eight different species at the Spanish market has been studied using price integration methodologies. Cases of...
Safety outcomes are one measure of the performance of a commercial fishery. Catch share management, which allocates fishing quota to individual vessels or entities, may reduce economic incentives to engage in risky behavior in the “race to fish”. The Multispecies Fishery in the Northeast region of U.S. is considered the...
Complex social–ecological systems such as small-scale fisheries require the inclusion of human dimensions in fisheries management and planning for simultaneously preserving human health and habitat health. However, linkages between ecological, social, political and economic subsystems have been largely ignored in conventional fisheries management, in Nigeria in particular. Hence, the weak...
Drying is affordable preservation method used where poorly developed logistics limit marketing of fresh fish. In Eastern Africa dried Rastrineobola argentea (Dagaa) is an important source of low cost stable dietary protein. The fishery is characterized by high post-harvest losses and products are often of low quality, restricting the sales...
The first-hand market for wild-caught fish in Norway is subject to much uncertainty for both buyers and sellers. Factors such as changing quotas, seasonal variations in availability of important species, and sudden changes in market conditions creates instability in volumes and prices both on the demand and supply side. For...
Demand for science and advice to address economic considerations is increasing, but the International Council for the Exploration of the Seas (ICES) does not engage many economists or address economic issues in many member countries. The Strategic Initiative on the Human Dimension (SIHD) has raised the profile of economics, but...
The feed conversion ratio (FCR) or its reciprocal, the feed efficiency ratio (FER) is currently used to estimate the feed requirements in aquaculture. This has a serious disadvantage. The FCR is a function of feeding rate, initial and final mass at fattening, temperature and quality of feed. Therefore the FCR...
We present the results of integrating the fisheries sector into an existing computable partial-equilibrium global model of agriculture, livestock, bioenergy, forestry, and land use. The model is constructed by reconciling publicly available global datasets from the FAO as well as the literature. The model of the fish sector represents capture...
Socio-economic analysis of seafood production is important for the conservation of aquatic ecosystems and the management of fisheries and aquaculture activities. Understanding how the livelihoods of people, dependent on the exploitation of aquatic resources, are affected by various changes is essential for decision making. The two main seafood production sectors,...
As changes in climate and corresponding ocean shifts threaten U.S. fisheries with uncertain change, West Coast marine scientists and fishery management institutions have newly emphasized ecosystem-based analysis and management. The development of the West Coast-specific California Current Integrated Ecosystem Assessment (CCIEA) has accordingly allowed for economic analyses and the social...
Fisheries economics has recently earned a seat at the global fisheries governance table, with everything from subsidies, to high seas fisheries, to Indigenous rights, food security, and human rights now being open for global assessment. The papers in which these studies are housed are in high impact journals, are highly...
The importance of small-pelagic species in marine ecosystems and their economic contribution to coastal communities are increasingly recognised by many fishery managers. However, the management of small pelagic species faces many challenges due to environmental factors that periodically impact on recruitment of the species. Delayed responses in management to these...
The OECD has been collecting information on fisheries policies for many years. The Fisheres Suppor Estimate (FSE) database represents the latest version of its fisheries policy inventory and classification system. This database contains information on policies in 33 countries (representing about half of global fisheries landings) totalling USD 13 billion...
Saltwater recreational fisheries receive little attention compared to their commercial counterparts. Yet recreational fisheries can suffer from many of the same symptoms of open access as commercial fisheries. Regulations designed to allocate a scarce supply, such as seasonal closures augmented with bag and size limits, can result in significant losses...
The World Bank’s Global Environmental Facility’s empanelled the Global Think Tank (GloTT) to examine the use of incentive compatible management (ICM) in Area Beyond National Jurisdiction (ABNJ) fisheries. This presentation summarizes the conclusions project that compiled examples of the use of ICM principles in ABNJ fisheries management. This larger effort...
The Abalone Fishery in one of Victoria’s most valuable commercial fisheries and most of the catch is exported to international markets in Asia (Japan, Hong Kong, Singapore, China). Target species consist of blacklip abalone and greenly abalone (<1% of total catch). The fishery is quota managed, and the total allowable...
The present status and deviations from the classical management practices of composite farming of Indian major carps (IMC) have been investigated in North 24 Parganas district of West Bengal, India. Classical six species combination, ratio of IMC and exotic carps were not being followed by any of the farmers as...
In Norway, structuring of the fishing fleet has been an ongoing process since the start of the 1960'ies. Since then, both the number of vessels in Norwegian fisheries and fishers have been reduced by roughly 85 %. For decades, the fisheries industry has been considered a mean to employment and...
The study contains a cost benefit analysis of the aquaculture development component of the Fish Farming Enterprise Productivity Program (FFEPP) undertaken for Meru County in Kenya. It focuses on the implementation of the FFEPP undertaken from 2009 up to 2013 and evaluates its benefits and costs against the opportunity cost...
Complex social–ecological systems such as small-scale fisheries require the inclusion of human dimensions in fisheries management and planning for simultaneously preserving human health and habitat health. However, linkages between ecological, social, political and economic subsystems have been largely ignored in conventional fisheries management, in Nigeria in particular. Hence, the weak...
Sablefish is a commercially important species with catch allocated across multiple sectors and gear types on the U.S. West Coast. A flexibility provision in the West Coast Groundfish Trawl Catch Share Program sanctions those with trawl permits to target Sablefish with fixed gear, such as longlines or pots, allowing the...
How well at fishery management regime perform is closely related both to vessel performance (i.e. return on investments) and if the species at stake are harvested in sustainable manner. However, ROI do not capture important dimensions of vessel performance. In addition, sustainability also includes social, economic and institutional dimensions. In...
A World Bank/Global Environmental Facility funded project aims to explore the potential for incentive based tools and third-party financing to improve the performance of highly migratory fisheries with a high seas component (ABNJ fisheries). Under this World Bank project, the World Wildlife Fund (WWF-Inc.) is responsible for the work of...
The species-based approach currently implemented in Europe where catch limits (TAC) are set for each stock independently, is not adapted to the management of mixed fisheries that harvest various species. The economic efficiency of those fisheries is often constrained by the existence of « choke species » for which catch...
The Gulf of Mexico (GOM) is characterized by fishery resources which spatially and temporally overlap in different ways with several important non-fishing uses including oil and gas production, shipping, tourism, habitat for endangered species, and economic support for coastal communities. Given this overlap, the Deepwater Horizon Oil Spill affected fishing...
Under the Global Environmental Facility, the overarching framework for the Caribbean Billfish Project (CBP), fishery science experts have developed a tool, the FPIs, to rapidly assess the generation of ecological, economic and community wealth from commercial fisheries, and to identify the management structures, governance methods, and regulatory instruments that promote...