In this paper we develop an index of economic vulnerability which we use conjointly with a more
conventional measure of income poverty to explore the different dimensions of poverty (transient, chronic, vulnerability) that affect fishing communities in developing countries. We illustrate the potential uses of this method with cross-sectoral data...
The main objective of this study is to assess seafood marketing and pathway in Nigerian coastline (the case of Lagos and Ondo States in the South West, Nigeria).
The specific objectives were to determine the: demographic characteristics of seafood marketers in the study area; gender pathway involved in seafood marketing...
Small pelagic fish species are important fisheries resources for food and have valuable contribution in employment creation. The overall objective of this study was to assess the socioeconomic value of small pelagic fishery in Mafia Island. The fishery is artisanal and dominated by men. The dependant on the small pelagic...
An economic assessment of the commercial harvesting sector, seafood processing and distribution
sectors, charter boats for hire, livebait boats and dealer houses, marinas, support facilities, and
recreational boats was undertaken in Mississippi to determine the level of damage sustained as a
result of Hurricane Katrina. The devastation by this hurricane...
To examine the impact of the Landing Obligation (LO) on the Irish fishing industry and explore possible mitigation strategies, we carried out two trials on commercial fishing vessels in 2015. One vessel targeted Nephrops, the other mixed demersal whitefish in Irish waters. The study was in two phases. In month...
The main objective of this study was to describe the marine artisanal fishery in Tanzania mainland by manipulating data from frame and catch assessment surveys from 1984 -2011. Results showed that catches have been fairly stable while fishing effort has been increasing leading to decline in CPUE. This could be...
During 1986-2006, fisheries in Tonkin Gulf had made rapid development. Total engine power increased 11.6 times while total catch only increased 2.9 times. Big increase in number of fishing boats has resulted to the overexploitation in near shore waters since 1995 and this situation has been spread out all over...
Tuna fisheries around the world are governed by Regional Fishery Management Organizations (RFMOs), whose membership includes both harvesting nations and nations in whose waters the targeted fish populations reside. The outcomes of the policies established by an RFMO will depend on subsequent interactions among the fleets, the fishing sites and...
This paper discusses the use of options as a tool to retrieve valuable information on the value and level of risk associated with owning a share in a stock of renewable resource. The objective is to show how theory on options trading can be used to obtain information on the...
When a new market is created for ITQs, fishermen may have little information about the value of the newly-created assets that they hold. As such, concerns have been raised regarding distributional concerns associated with the transition to market-based management of natural resources. Aside from the first-order concerns regarding the initial...
A recent study in agricultural products has brought out evidence of asymmetrical transmission of price changes according to the sign (positive or negative) of past variation. Interestingly, asymmetry was more commonplace for products with a lower elasticity of supply due to the perishable nature of products. A similar study based...
The presentation discusses cost data collection methods and use in support of commercial fisheries management in the Pacific Islands Region, United States. Traditionally, economic information on Pacific Island fisheries was limited primarily to the dockside value of landed fish. Data on fishing expenses were obtained intermittently, through episodic surveys conducted...
Atlantic salmon aquaculture is a growing industry in the Bay of Fundy on Canada’s Atlantic coast. The vast majority of aquaculture sites are concentrated in a relatively small coastal region of the province of New Brunswick (NB) where the industry is viewed as a major component of regional economic development....
This paper analyses the management of the Atlantic salmon stocks in the Baltic Sea through a coalition game in partition function form. The signs of economic and biological overexploitation of these salmon stocks over the last two decades indicate that cooperation among the harvesting countries, under the European Union's Common...
New Zealand marine recreational fisher’s attitudes to their fisheries and fisheries management are discussed in the light of the findings from two studies. The first study, a national telephone survey of more than 600 fishers, investigated why fishers seek to go recreational fishing and their attitudes towards the fisheries management....
When several new species are introduced into the New Zealand Quota Management System in the near future, some of the quota, or single-year annual catch entitlement (ACE), will be tendered through competitive auctions rather than allocated based on historical catch. This study uses a laboratory experiment calibrated to a representative...
Outline: Fishing rights development in Australia, Assumptions - Commercial Fishing (CF) rights security, Experiences - CF rights and other claimants, uncertainty and investment, Options to strengthen resource security & compensation, CF rights - “prime movers” in developing an ocean investment framework, Going forward with the Blue economy, An improved BE...
Since 1999, the scallop fisheries have been granted access to closed areas on Georges Bank, and the
access programs have been managed through individual vessel quotas for scallops, and a common-pool
total allowable catch (TAC) for yellowtail flounder bycatch. The scallop resource is neither overfished
and nor is overfishing occurring,...
The open access nature of fisheries resources had caused application of excessive fishing effort to most World fisheries. Proper
management of fisheries resources is vital for sustainability and its safe future utilisation. Most attempts to salvage fisheries resources
had so far succeeded but have also created one or more problems....
Use of indigenous knowledge systems (IKS) is critically important in production systems and environmental management in Nigeria. Despite the importance of fisheries to Nigeria’s economy and the indispensable role of IKS in it, IKS used in fishing households have not been adequately researched. This study identified and examined the utilization...
Traditional approaches to halt decline of fisheries resources focus on regulating against destructive practices, but to little effect. A more effective strategy could be to establish a direct economic incentive mechanism such as payments or compensation schemes, or to incorporate such payments into existing regulatory mechanisms. Examples from terrestrial environments,...
In multispecies fisheries managed with individual fishery quotas (IFQs), fishers targeting certain species often have
insufficient quota to cover other jointly caught species. New Zealand employs a unique dual price-quantity system to
address this problem. In lieu of acquiring quota, fishers can opt to pay a fee per unit of...
This paper examines the regulatory decision problem facing fishery managers tasked with balancing desirable fish catch with undesirable bycatch. I approach the problem using Bayesian decision analysis. I first estimate a model of production, accounting for the fishery’s joint production of desirable and undesirable outputs. I then use the estimated...
Pla Tubtim (Oreochromis sp.) was a new fish species for aquaculture in Thailand. It was an improved breeding from tilapia and expected to be a common fish dish for the Thais while being an important source of income earning for fish farmers in this country. Logit model was applied to...
We present a scenario-model for the joint Norwegian and Russian managed capelin and cod stocks in the Barents Sea. The model basically consists of two sub models. The first is an autonomous management model which, based on profit functions and growth functions with coefficients calibrated from real data, finds a...
This research examines bargaining power in the market for Northeast
Multispecies Days-at-Sea (DAS). In 2004, the DAS system was converted
to a tradable input control system. Characteristics of the program include:
1) trading restrictions based on length and power to limit increases in
output, 2) prohibitions that limit the ability...
Fishery barometer surveys economic prospects and trends of fishery enterprises in Finland. The enterprises are divided into fishing, aquaculture, processing and the wholesale or retail trade. Since year 2000 the enterprises have been asked to evaluate their economic parameters, such as financial standing, turnover and investments. The present situation is...
The CHARM Project is a 5-years project (2002-2007) of the Royal Thai Government supported by the European Union. Its focus on developing coastal habitats and resources co-management processes is based on the assumption that the most important aspect of inefficient use of coastal resources lies at the institutional level. Among...
Enhancement of British-Columbia-to-Alaska Transboundary Rivers is a vast potential prize to all concerned. However, despite funding commitments in the Pacific Salmon Treaty, that program is at great risk of always being more potential than real. The cooperation needed to make this program work has been and continues to be grievously...
Manual beach seining is a widespread and popular fishing gear in Mozambique, targeting small pelagics and demersals and supplying exclusively national markets. The fishery provides employment for half of all marine artisanal fishermen in the country, and lands a significant proportion of total catch from the artisanal sector. The fishery...
Key Takeaway: Understanding this process and factors that influence compliance decisions can help support the development of effective regulations. Importance of consistent observer coverage. Compliance varied by violation choice. Importance of port-level campaigns.
Main objective of this paper is to investigate current issues of the development of Culture-Based Fisheries (CBF) within the existing legal frame work. The experiences of CBF activities from 2003-2004 in five administrative districts in Sri Lanka have identified two main issues for the development of culture- based fisheries such...
In Bangladesh, women constitute about 50% of the population but comprise only one-fourth of the labor force. Considering women's critical roles in fisheries sector many projects in Bangladesh address both men and women as target groups putting more emphasis on women groups. One such project is "Emergency cyclone Recovery and...
Aquaculture is increasingly important for the future supply of fish because of steadily increasing demand while supply from fisheries is stagnating. In the EU aquaculture production has grown strongly in some countries, such as Spain and Greece, but was flat at a low level in others, such as in Germany,...
Early in 2002, members of two Producer Organisations (POs), the North Sea Fishermen’s
Organisation in Britain, and the Dutch Cooperative Producentenorganisatie Oost Nederland,
realised that their quotas of plaice and sole were insufficient to last until the end of the quota
period. Vessels have in the order of 70-80% of...
Norway has been characterized as a “hesitant reformer” regarding fisheries management. Instead of introducing a fully fledged ITQ-system after the crisis in the coastal fisheries in 1990, a new Individual Vessel Quota (IVQ) system was introduced. Later a structural policy was introduced, whereby fishing rights (and adjoining quotas) may be...
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...
In this paper we develop a bidding model for fishermen participating in a
sequential permit buyback auction. A key feature of the model is a
Bayesian updating process, which allows bidders to use information gained
from past participation in future bid selection decisions. Our auction model
was based on the...
Future changes in Arctic marine ecosystems will depend as much on global climate change as on our ability to regulate and manage exploitation pressure at sustainable levels. There is a lack of integrated, cross-sectoral ecosystem-based analysis of the Arctic marine management. The analysis is on both the choices for implementing...
Namibia has certain very positive attributes for the development of the aquaculture sub-sector. In the last ten years great strides have been made in creating a cohesive, clear and efficient legal and regulatory environment for the development of aquaculture in Namibia. There is a necessity to exploit the conducive environment...
The lack of selectivity in many fisheries may lead to discards and bycatch. Discards of under-sized or non-commercial species/individuals represent damage to the eco-system, an additional source of overfishing and a waste of resources. Bycatch may increase fishing pressure on species targeted by other fishermen. The purpose of the paper...
The objective of this paper is to study the economic management of Eastern
Baltic cod (Gadusmorhua) under the influence of nutrient enrichment. Average
nitrogen concentration in the spawning areas during the spawning season of
cod stock is chosen to be an indicator of nutrient enrichment. The optimal cod
stock is...
Even in the absence of commercial fishing, Coho salmon (Onchorhynchus kisutch) originating from the Interior Fraser River (IFR) watershed have yet to recover from the low returns experienced since 1992. Coho are in a low productivity regime in which the number of recruits per spawner (R/S) averages around one, coupled...
The red king crab (Paralithodes camtschaticus) is an alien invasive species in the Barents Sea representing a value as well as a potential pest. A bio-economic model is applied analysing the costs that traditional fisheries incur as a result of the king crab invasion, as well as the income from...
This paper proposes a game theoretic modeling framework for the assessment of the trade-off between economic efficiency gains and biodiversity conservation in a fishery. It introduces a biodiversity index, and develops an application of the method couched on Namibian hake fisheries. Results from the illustrative example show that the opportunity...
The Ganga, one of the most important rivers of India, is considered as heaven for rich biodiversity of fisheries and economically rewarding aquatic species. An investigation looked into ecology and habitat degradation of fisheries affecting biodiversity. It has been found that more than 35 fish species commonly available in river...
This paper provides a working definition of bioeconometrics and a taxonomy of model types. A bioeconometric model is an empirical model of a bioeconomic system in which quantitative changes in one or more parameters can affect the qualitative behavior of the dynamical system. Bioeconometric model types include equilibrium, dynamically decoupled,...
Short-lived fisheries stocks are subject to large fluctuations in abundance and respond rapidly to many factors
including changes in oceanographic conditions, biological interactions and fishery exploitation. Management of
such species requires a flexible, adaptive framework that responds rapidly to a changing environment, although such
schemes are rarely operationalized. In this...
Balanced feed represents approximately 60 % of production costs in fish culture and ration size has significant effects on this parameter. Ration size varies according to culture strategies and producer knowledge. It can also have environmental implications since feed can be a pollutant. A bioeconomic model was developed for an...
Nile tilapia has been cultivated in intensive systems in Yucatan, Mexico, during the first years of this century. Nevertheless, its adoption faces technical (related to the use of commercial feed) and marketing problems (fixed price of $2.14/Kg), which are analyzed in this paper. To do this, a bioeconomic model of...
The objective of this study is to investigate the sustainability properties of the stock of the shrimp trawl
fishery in the Tonkin Gulf, Vietnam. Surplus production models of Verhulst-Schaefer and Gompertz-Fox
are applied to the shrimp trawl fishery, which is a typical tropical fishery with the characteristic properties
of small...
Despite several factors favoring the development of haddock (Melanogrammus aeglefinus) aquaculture, there is virtually no economic information on its feasibility. This paper uses bioeconomic simulation techniques to conduct an ex-ante impact assessment of the early life stages in haddock production. Using an economic engineering methodology, early life stages are modeled...
Fishing systems provide employment, income generation, poverty alleviation, and food security. The coexistence of small-scale fisheries (SSFs) and large-scale fisheries (LSFs) increases management complexity. Management actions have ecological and social implications that must be addressed carefully. We applied a bioeconomic game-theoretical model to the four-gear mullet fishery in southern Brazil—one...
Fishing systems provide employment, income generation, poverty alleviation, and food security. Management actions have ecological, economic and social implications that must be addressed carefully. The coexistence of small-scale fisheries (SSFs) and large-scale fisheries (LSFs) increases management complexity. Game-theoretical bioeconomic models empower management decisions in such complex systems.
The demersal fishery of southern Chile is a complex system including multiple species, fishing fleets and markets. Fishing activity is conducted under a rights-based system for southern hake (Merluccius australis) and hoki (Macroronus magellanicus), where a TAC is allocated in an even manner among fleets and operators. New management approaches...
The Otago (CRA 7) and Southland (CRA 8) regions are managed with distinct individual transferable quotas (ITQs) as part of the New Zealand quota management system (QMS). However, for assessment purposes, they are considered as a single stock known as the NSS (North-South Islands - South) rock lobster stock. Currently,...
This is a study on economic implications of the 3 year harvest control rule (HCR) for the Northeast Arctic
cod stock, decided in November 2002 by the Joint Norwegian-Russian Fisheries Commission. Outcomes
of this rule are compared to those of five other rules, including the previous one based on a...
The paper reviews the management and bioeconomic modeling of the Southern Bluefin Tuna
stock. It describes two studies using simultaneous, non-cooperative, three player games to predict
revenue and stock outcomes generated by a deterministic, discrete, age-structured model of the
SBT population. Two versions of the model, corresponding to biological and...
In this study, we tried to develop a theoretical framework based on the Schaefer model and establish bioeconometric models to estimate the index of fishery resources using cross-country macro data. The characteristics of our model are that we consider the effect of natural fluctuations of fishery resources over time (in...
The Philippines is surrounded with many fishing grounds. In spite of this, most fishermen in the area live in poverty, and their plight is getting worse, not better. Current fisheries policies for the area have failed to improve the situation but no research has been done to find out why....
The purpose of this study is aimed at developing a simple bioeconomic model of the Namibian rock lobster fishery, with the main objective being to incorporate economics into fisheries management in order to estimate the potential economic benefits that could accrue to the fishery given efficient management. The complex nature...
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...
Fisheries biologists and other marine scientists working closely with the regional fisheries organisations (RFOs), such as the International Council for Exploration of the Sea (ICES) have developed and applied different concepts and methods, including reference points, for assessment and management of fish stocks. However, management recommendations are usually not based...
Many developed nations have accessed the diverse benefits of recreational fisheries in their this is not yet so in developing countries, this study explored the viability of recreational fisheries in two Nigerian Lakes.
Biological resources were sampled for twelve (12) months on Lakes Asejire and Oyan all in the forest...
Fisheries economists have studied fisheries managed with ITQs and compared them to fisheries that are differently managed. Most of these studies have found ITQs to be economically superior. This paper studies the ITQ-fisheries in Iceland. It focuses on features that are difficult to explain using traditional fisheries economics. It is...
This paper deals with the economic impact of an aquatic invasive alien species on a coastal shellfish
fishery. A slipper-limpet (Crepidula fornicata ) was accidentally imported some decades ago, has
established and is spreading in the bay of Saint-Brieuc (France). This exotic species is acting as a space
competitor for...
This paper deals with the control of an invasive species, void of market value, and acting as a space competitor for a native valuable harvested species. The paper presents a theoretical bioeconomic model describing the interacting dynamics of the two stocks. In the model, control variables are the levels of...
The presentation summarizes preliminary results of the first part in the PhD project “Economic valuation of the wild salmon stock in Norway”. The externalities from the salmon farming industry, such as spread of parasites and genetic pollution, affect wild salmon populations. The aquaculture management in Norway faces a trade-off between...
Eco-certification of seafood has been suggested to be a key market based mechanism for reducing the pressure on the world’s aquatic ecosystems. In the study presented here we investigate to what extent consumers’ stated purchasing of eco-labelled seafood was correlated with seven internal variables: environmental knowledge, familiarity with eco-labels, subjective...
Bluefin tuna capture today is focused on large fish caught by longline and smaller fish caught by purse seine for on-growing for between 3 months and 3 years. There has recently been the emergence of full life cycle farming in Japan with South Korea (Pacific bluefin tuna) and Australia (southern...
Full life cycle culture of bluefin tuna has so far been achieved only for Pacific bluefin tuna by the Japanese at Kinki University in 2002 with the first fish going on sale in Japan in 2004. More recently Japan's Okinawa fisheries laboratories have also achieved the same success, with the...
Proceedings of Visible Possibilities: The Economics of Sustainable Fisheries, Aquaculture and Seafood Trade, the 16th Biennial Conference of the International Institute of Fisheries Economics & Trade, held July 16-20, 2012 in Dar es Salaam, Tanzania.
This document provides an overview of a presentation held during the Industry and Policy Day at the IIFET 2016 Scotland conference in July 2016. The presentation was part of Session A4: Global Market: Connections and Prospective Opportunities. The session was chaired by Maarten Mens, and the presentation was given by...
Assessment studies have summarized the literature on global food security and projected impacts of climate and other major drivers of regional and global change in the 21st Century (IPCC, USDA). Additionally, the Agricultural Model Inter-comparison and Improvement Project (AgMIP) is working to develop new coordinated global and regional assessments of...
Four commercial fisheries off Alaska’s coast are managed by transferable quota systems. Implementation
of each quota program was controversial, and two programs were mandated by federal legislation rather
than standard rulemaking procedure. Pacific halibut and sablefish are managed by individual harvest
quota programs, which were designed to maintain a predominantly...
Inland fish farming is still a mystery for the economic development of Africa. Many African countries especially in the south of the Sahara do not largely practice inland fish farming for commercial purposes. This is because many Africans still believe in their economic redemption through crop production, grants and or...
Decades of social science research has shown that fisheries, particularly small-scale, are integral to
community wellbeing. They contribute to food security, men’s, women’s, and children’s livelihoods,
health, community identity, and social cohesion. These contributions need to be well-defined and
contextualized, as well as differentiated between fishing sectors, for better fisheries...
This paper addressed the budgeting analysis of catfish marketing in Ondo
State. The catfish sellers were interviewed from the market with the aid of
structured questionnaire and personal interviews. Data were collected using
simple random sampling technique from fifty (50) marketers. The data
collected were analyzed using frequencies, percentages, profitability...
Due to the development, Japan lost more than half of seaweed beds
because of reclamations, water brake constructions and water pollution
after the WWII. As a result, coastal fisheries production decreased from 2
million metric tons to 1.5 million metric tons. Building a forest in the sea
has been paid...
As part of the ecosystem approach to managing fisheries and other uses of marine ecosystems, there has been a growing call for the development of integrated assessment tools to support the provision of both tactical and strategic management advice. Of particular importance in this domain is the development of models...
The ‘blob’ of anomalously warm surface water that persisted in the North Pacific Ocean from 2013-2016 resulted in a massive harmful algal bloom (HAB) of Pseudo-nitzschia along the entire U.S. west coast. The bloom produced record-breaking concentrations of domoic acid, a marine neurotoxin, that contaminated seafood and necessitated fisheries harvest...
Trade in smoke dried fish is driven by demand from Africans in the European Union (EU) and United States.The EUhygienepackage follows the principles ofthe farm to table promoted by the World Trade Organisation (WTO) andwasdesigned to protect the health and safety of consumers as well as addressing animal welfare, plant...
After declining rapidly because of low fish stocks in the early 1970s, the Newfoundland fishery — harvesting and processing facilities, and employment — expanded severalfold during the four years following adoption of the 200-mile limit. The expansion collapsed into bankruptcy during the 1981 recession. Through government intervention the industry was...
Buyback auctions are often proposed as a policy to reduce excess capacity in fishing fleets prior to or in place of implementing a tradable quota program. In this paper I take a critical look at possible designs for such a policy in environments with uncertainty and asymmetric information. In an...
New Zealands quota management system is based on transferable
harvesting rights operating within regulated allowable harvest limits. The
system has evolved since its implementation in 1986. One particular
challenge has been the design of mechanisms to encourage the balancing of
catch against quota. A model is developed for a target...
This study was conducted between January 2017 to December 2018 in two fishing communities of Bayelsa and Rivers States, Nigeria. The choice of Imibikiri in Brass local government area, of Bayelsa State and Finima in Bonny Island local government, of Rivers State, was based on accessibility, security, fish production intensity,...
We conducted similar bycatch avoidance programs in two New England fisheries: yellowtail flounder bycatch in the sea scallop closed area fisheries and river herring bycatch in the Atlantic herring and mackerel fishery. These species have different behavioral properties: sea scallops are sessile; yellowtail flounder are demersal with limited but unknown...
The US Pacific Whiting fishery is a large industrial fishery with landings over 260 thousand metric tons valued at $64 million in 2014. A catch share system was implemented in the fishery in 2011 with IFQs for shoreside vessels and allocations to a mothership and a catcher-processor cooperative. Bycatch is...
Bigeye tunas are bycatch to skipjack tunas when tuna purse seine vessels set their nets on floating aggregator devices (FADs). Current approaches to managing bigeye in both the Eastern Pacific Ocean (EPO) and the Western and Central Pacific Ocean (WCPO) entail permanently closed areas, such as the “correlito” in the...
We hypothesized that bycatch may affect the quality of the shrimp by causing breakage. A double-rigged commercial shrimp vessel was chartered for test fishing. One net employed a Nordmore grate BRD and the other served as a control. Bycatch was measured from each net.
The shrimp catch was kept separate...
With the creation of multi-species catch share programs, halibut bycatch reduction efforts, and through actions to reduce Chinook and chum salmon bycatch in the Bering Sea and Gulf of Alaska pollock fisheries, we have seen a variety of new bycatch management programs implemented over the last decade in Alaska. The...
Individual transferable quotas (ITQs) in multispecies fisheries create incentives for fishermen to avoid bycatch of
species for which quota is scarce. However, when bycatch is highly uncertain, individual quota demand and prices
may be volatile creating substantial financial risk for fishermen. The US Pacific Groundfish fishery recently
introduced an ITQ...
Price instruments are rarely seen in fisheries despite their many desirable
properties. In this paper, I find new reasons to favor price instruments in a
fishery. Given constraints on information and enforcement precluding the
optimum optimorum, I consider a second-best but welfare improving
policy when catch limits cannot be enforced...