The motivation of this paper is to detail the application of Markov chains in
simulating fleet dynamics in Australia's Northern Prawn Fishery (NPF).
The Markov chains are enhanced through the use of the multinomial logit
(MNL) and Seemingly Unrelated Regressions (SUR) models to explain
transition probabilities. The terms MNL Markov...
The past twenty years has seen the offshore outsourcing of post-harvest
fish processing gain unprecedented momentum. The growth in offshore
processing is a further stage in an increasingly globalised fisheries value
chain. Raw material is head and gutted, then frozen, and transported to
processing sites in Asia (especially China). The...
The spatial, multi-species nature of coral reef fisheries makes them notoriously difficult to manage. We
have developed a simulation modeling approach to examine the effect of management options on the
recreationally important tourist destination of Ningaloo Reef in Western Australia where a recreational
fishery targets Spangled Emperor (Lethrinus nebulosus). The...
This paper is based on a review and assessment of lessons from three
projects on fisheries co-management in Bangladesh: i) Community-based
fisheries management (CBFM), ii) Management of aquatic ecosystems
through community husbandry (MACH), and iii) Fourth Fisheries Project
(FFP). These co-management initiatives established 191 Community Based
Organizations (CBOs) in 179...
Due in part to limitations in data and models, fishery managers have been
hindered in their efforts to simultaneously address economic and ecological
effects of management measures. In the US, this promotes violation of
National Standard 8 of the Magnuson Stevens Fishery Conservation and
Management Act, which mandates that conservation...
The paper develops a model of recreational fisher behaviour in which
fishers maximize their individual utility by adjusting fishing time, trips,
catch and size of fish caught. It investigates the optimal behaviour or an
individual fisher with and without constraints such as bag limits. The
model is used to assess...
When we observe activities in french Guyana, we look some particular behaviours without references on modern or traditional economic sectors. It's informal behaviours creating disequilibrium. Fishering sector is a good example. We propose an examination as from two perspectives: in one side a productive logic, in the other side a...
This study analyzes supply and demand system for the mussels in the EU
markets. The results show that farmed and wild quantity of two main
species of mussels, Mytilus edulis and Mytilus galloprovincialis, have
declined in recent years due to limits of seed and space. However, a
demand system analysis...
Inspired by the export boom developing countries got involved in multiple
export earning activities. However shrimp exports have become quite
lucrative activities for many developing countries including Bangladesh.
Shrimp occupies a good chunk of our export income. In calculating the
return from shrimp exports the usual practice is the nominal...
In the economic literature on fisheries management complete information
is normally assumed. In reality fishermen have more information than the
regulatory authority. In the present paper a principal-agent approach is
applied to analyse management with a tax on fishing days under
asymmetric information about the skill of fishermen (productivity) and...
Many renewable resources, such as fish stocks, water or environmental
quality, are shared between different countries. The management of such
resources then relies on international agreements. We develop a model of a
shared renewable resource for which there is an international agreement
that determines each country's share of total extractions....
The economy of Bangladesh has benefited enormously from the rapid
development of the aquaculture production, in particular from shrimp
cultivation. In 2007-08 Bangladesh earned US$ 445.41 million from
shrimp export, which is about 4.25% of the value of total national export.
There are over 600,000 people employed directly in shrimp...
Pacific sardine (Sardinops sagax), which is a transboundary resource
targeted by Mexican, U.S. and Canadian fisheries, has exhibited extreme
decadal variability in its abundance and geographic distribution
corresponding to water temperature regime shifts within the California
Current Ecosystem. Our study develops a three-agent bioeconomic
framework that incorporates environmental effects on...
Stock assessment techniques currently used in the United States are extremely costly to implement, involve significant data requirements, and are inaccessible to all but a few stock assessment scientists. A systematic decrease in fishery yields and the designation of several species as overfished on the west coast of the United...
A major simplification in bioeconomic models is that the model parameters
and functional forms are assumed known. In fisheries, the failure to capture
model uncertainty can easily cause overconfidence in model outputs and
resultant policy recommendations. Although fisheries modelers regularly
assume rather complete knowledge of the systems they study, in...
While environmental stressors such as hypoxia (low dissolved oxygen) are perceived as a threat to the productivity
of coastal ecosystems, policy makers have little information about the economic consequences for fisheries. Prior
studies based on data aggregated at relatively large spatial (e.g.,1000s km) and temporal (e.g., annual) scales have
typically...
Conservation goals and resource use can easily conflict when externalities
exist. This is the case in the Baltic Sea with grey seal (Halichoerus grypus)
and Atlantic salmon (Salmo salar). Both of the species have been defined
as critically endangered in the late 20th century but due to conservation
schemes, harvest...
The main objective of this paper is to analyze the economics effects that
the Prestige oil spill over (2003) had on the Basque coastal fishing industry
by means of a two-stage stochastic production frontier approach. The first
stage is based on the econometric specification of a parametric production
frontier based...
Interest in ecosystem-based management or the ecosystem-based approach
to fisheries management has rapidly increased on a global basis. Most
options for ecosystem-based management have emphasized some type of
biological and natural conservation or non-use, and minimal attention has
been given to assessing the social and economic ramifications of
ecosystem-based management....
Economists studying the management of fisheries have universally assumed disturbances affecting harvest costs are unrelated to disturbances affecting biological growth. This paper gives examples of commercially valuable species that are impacted reproductively and behaviorally by a single environmental variable (e.g., temperature), leading to correlated disturbances in current marginal harvest costs...
In 2003, an industry-financed, government-administered buyback of trawl
fishing permits and vessels took place on the US West Coast, resulting in
the retirement of about one-third of the limited-entry trawl fleet. The lack
of cost data in this fishery precludes an analysis of how the buyback has
affected profitability, but...
The paper will report on the development of a new set of wealth-based
Fishery Performance Indicators (FPI) for evaluating and comparing the
worlds fisheries management systems. A wealth-based fishery management
system is one that is ecologically sustainable, socially acceptable, and
generates sustainable resource rents or profits. The Fishery Performance
Indicators...
Assessing distribution of the expected bio-economic impacts of
management measures between fleet segments is a main issue for decision
making in fisheries management. This requires as a first step a good
description of the system and of the interactions between fleets through
stocks. Making this assessment operational also needs flexible...
This paper develops a theoretical framework to assess resources management procedures from a sustainability
perspective, when resource dynamics is marked by uncertainty. Using stochastic viability, management procedures
are ranked according to their probability to achieve economic and ecological constraints over time. This framework
is applied to a fishery case-study, facing...
ITQ introduction has had several effects on fisheries in terms of, for
example, changes in the composition of the fishing fleet and fishing
efficiency gains. After ITQ introduction in the Tasmanian rock lobster
industry in 1998, an increasing number of fishers have become dependent
on quota leasing to catch fish...
The lessons learned from a review of thirteen bio-economic models are presented. We describe and analyze
how these models equal/ compare and differ in terms of the classification, their biological and economic
modules, the integration between modules, the indicators they provide and indicator use. We pay particular
attention to the...
Recent work in the domain of fisheries ecology has shown that major
changes occur in fish communities exploited by commercial fisheries.
Selective fishing pressure on the more highly valued components of fish
communities is amongst the key factors proposed to explain these changes.
Under de facto open access conditions, it...
A generalization of the harvesting functions and the stock updating functions in age-structured bioeconomic models is outlined. Using this generalization everything from completely uniformly distributed fish to extreme schooling is taken care of. The classical Beverton-Holt model comes out as a special case of the generalized model. Both the theoretical...
While right-based managements have often been encouraged as effective
management tools, few studies presented an empirical analysis on the
effects of those systems. This paper focuses on a special form of Territorial
Use Rights Fisheries called an income pooling system, and examines the
effects of the system empirically. Income pooling...
The present study uses normalized profit function and adaptive expectation approaches to analyze U.S. catfish farm supply. Empirical estimations give short-run supply elasticity of 0.25 and 0.26 and long-run supply elasticity of 0.47 and 2.1 in each of the two approaches, respectively. Technological improvement is attributed for only 9.8% out...
Upon request by the European Inland Fisheries Advisory Commission
(EIFAC), group of prominent economists and other social scientist were
assembled to create a set of guidelines for assessing socio-economic
benefits of the European inland recreational fisheries. A wide range of
international interest groups and academics were included in this process...
Fishers from coastal communities have been facing hazards of different
nature. Those stressors plus high fishing pressure have contributed to
resources deterioration, which in turn affects peoples livelihood, creating a
vicious circle. In order to understand this vicious circle and to explore how
this could be turned around, in this...
Eritreas Coastal Marine and Island area covers more than 121,000km2, include over 350 offshore islands and 1,350km of coastline (18% of the Red Sea continental coastline) not including the islands. The total coastal mainland population is 73,000, and only ten out of all the islands are inhabited with a total...
We define the notion of sustainable yields for ecosystem, with particular
emphasis on long-run consistency between ecological and economic conflicting
objectives. We provide a way to compute sustainable yields by means of
a viability analysis of generic ecosystem models with harvesting. We apply
our approach to a Lotka–Volterra model of...
Growth overfishing squanders large parts of the potential rents in fisheries. Many of today’s fisheries are
characterized by a severely truncated age-distribution, which in addition may have irreversible ecological
consequences. Nevertheless, the implications of age-differentiated harvesting for management have
received surprisingly little attention in the literature. In the present paper,...
Aquaculture is one of the most dynamic food-producing subsectors
worldwide. In the Philippines, shrimp monoculture started in the 1980s,
only to collapse less than a decade later due to disease. More recently,
extensive polyculture of fish, shrimp and mud crabs has developed. The
objective of this paper is to analyze...
The aquaculture sector is uniquely placed to complement production from the stagnating capture fisheries sector and it has advantages in terms of controllable production characteristics. However, aquaculture poses undeniable economic, environmental and social challenges that may be poorly evaluated or inadequately addressed within current policy frameworks. In such cases, the...
Environmental resource values are often obtainable only through stated
preference or hypothetical surveys because other nonmarket valuation
methods only account for part of the resource value or are unsuitable.
Despite the recent popularity and many advances in discrete choice
techniques for nonmarket valuation, the implications of questionnaire
structure, namely framing...
This paper investigates the welfare effects of random closures in a fishery
operating under open access. At each point in time, a fishery is facing the
probability of an extreme event that impairs fishing activities but has no
direct impact on the fish population. Examples include massive blooms of
dinoflagellates...
Tuna farming industry of Japan has achieved complete culture and currently tries to seize the opportunity to materialize the industrial mass production of the artificial seed. Japan was only 3,000 tons (8%) among 37,000 tons of 2007, which was the peak of world production of cultured tuna. However in 2008,...
Existing research on the effectiveness of marine protected areas narrowly focuses on developing sets of management
indicators tied to outcomes described in management plans or on the achievement of a single objective such as an
increase in the size or number of older, more fecund female fish in a protected...
Although diversification of producing activities and migration abilities are often supposed to reduce vulnerabilities of the rural households, it should not be considered as a general rule. In the Central Delta of the Niger River in Mali, fishers are massively involved in rice farming as secondary activity and many of...
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...
This article gives insights on the complex balance between coalitions structure,
resource state or dynamics and agents’ heterogeneity to avoid bio-economic
collapses. A model bringing together coalition games and a viability approach
is proposed to focus on the compatibility between bio-economic constraints and
an exploited common stock dynamics. It is...
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 north coast of Java Sea is home to thousands of small-scale fishers fishing for small pelagic fish. The
small pelagic fisheries have been the main economic and social activities for coastal communities where
other alternatives are limited. The fisheries have been experiencing turbulent states during the last thirty
years...
The UN Law of the Sea of 1982 assigned rights and responsibilities to the
fishery resources within 200 nautical miles of the coast (i.e.,the Exclusive
Economic Zones: EEZs) to the adjacent maritime countries. A key
responsibility is the requirement that these countries manage their marine
living resources sustainably through time...
Problems with the security of imported foods and with false indications of origin have recently
been uncovered in Japan, leading to increased consumer interest in the country or place of
origin of foods. The place of origin is an important element when a consumer buys sea food.
This report presents...
Published January 2010. A more recent revision exists.Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
DOGMATIS is a multidisciplinary research project funded by the French Research Agency (ANR,
programme ANR-OGM 2007-2010). The transgenic technologies have been applied to fish since more
than 20 years now and some strains are at the premarket or market stage in countries outside Europe. In
Europe the main risk is...
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...
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...
With a national policy on catch shares in progress in the United States and
increasing use of transferable fishing rights in fisheries worldwide, it is
important to understand how the markets created by these programs
function in the real world. This paper presents information collected from
interviews with Florida spiny...
In this paper, we analyze the efficiency of the existing management regime
of the Bay of Biscay anchovy fishery, which has been closed since 2005
due to stock collapse. We also study Pareto improving strategies to
improve management of the fishery once the moratorium is lifted, expected
for spring 2011....
The result of investigation about aquatic exploitation actions on Nha Phu lagoon (Khanh Hoa province) acknowledged: Exploitation of fisherman was individual (100%) and professional skill was very low. Professional exploitations were major drag net (36.92%), drift net (20 %), tunny net (16.92%). They exploited in Nha Phu lagoon and exploitation...
The paper empirically illustrates the social capital status of the tsunami resettlements
and its impact on donor dependency. After five years of Indian
Ocean tsunami, study investigates the resettled fishing communities in
eastern coast of Sri Lanka. Sample composed of 200 fishing families resettled
in new locations but not in...
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...
Fisheries constitute a major productive sector in Latin America and the Caribbean. This sector generates income, provides employment, and makes a significant contribution to food security and the generation of foreign exchange. With most fishery resources fully exploited or depleted, opportunities for fishery development lie primarily in restoring depleted
stocks...
An international symposium devoted to Research and small-scale fisheries (Durand, Lemoalle, Weber,
1991) in Montpellier (France) in 1989 came from increasing evidence that “the complexity of small scale
fisheries calls for applying knowledge from many fields in combined studies that can take advantage of a
whole range of information”. Has...
Artisanal fishermen are the great unknown of fisheries. Being the more
numerous segment, is the more abandoned community by managers. In a
generalized context of overcapacity and taking into account the dwindling
state of resources, the situation seems to be paradoxical since artisanal
métiers are considered to be the less...
Establishing marine protected areas (MPAs) often results in fishers being
displaced from at least some of their existing grounds. A direct
consequence of this is that governments may be required to make
compensatory payments to the firms that are affected. Experience has
demonstrated that these payments can be significant, as...
We present the outlines of an integrated economic-ecological framework
designed to help assess the implementation of the ecosystem-based
management (EBM) of fisheries in New England. We develop the
framework by linking a computable general equilibrium (CGE) model of a
coastal economy to a bottom-up model of a marine food web...
Recreational fishermen quickly adjust fishing effort directed at a specific
site to variations in fishing quality. Holding all other quality parameters
constant, the functional relationship between fish abundance and the
resulting recreational fishing effort is denoted an effort response function.
This paper proposes a Cobb-Douglas utility function for the benefits...
The herring stocks in the Northeast Atlantic were nearly fished to
extinction in the 1970s. This collapse is usually attributed to advances in
fishing technology. The impact of productivity shocks depends critically on
how sensitive the fish catch is to the size of the stock. If the catch per unit...
40 years ago the Atlanto-Scandian herring stock collapsed with severe consequences for Iceland´s monotonic economy at that time. Two years ago the international credit crisis brought the country´s largest banks to insolvency, which shocked the whole economy with butterfly effects in neighbouring countries. The paper begins with an overview of...
Management changes in the coral reef fin fish fishery of the Great Barrier
Reef provide a natural experiment of the efficacy of combining no-take
areas and dedicated catch shares. A spatially-explicit bio-economic model
of the fishery is used to analyze the tradeoffs between biomass and the net
returns from fishing...
Modern fisheries management is strongly based on ecosystem theory. Ecosystem management involves direct manipulation of the habitat and population as well as human activity in order to optimize sustainable returns to humans. The ecosystems approach is widely viewed as a new concept in management of fisheries and aquaculture. Ecosystems based...
The expansion of the aquaculture sector over the last two decades has coincided with the growth in
importance of supermarkets in fish retailing in the EU. This paper presents a Value Chain analysis of
selected species from their point of production in Bangladesh to the major consumer markets in Europe,...
In 1996, the US New England Fishery Management Council formed a
technical team (PDT) to develop a new plan for Atlantic Herring (Clupea
harengus harengus). The inshore stock was close to fully exploited while
the offshore stock was underexploited. There were few full-time herring
harvesters and very few processors. Fresh...
Management strategy evaluation (MSE) is a methodology which allows to compare the efficiency of different management strategies in order to ensure the sustainability, in particular those based on viable control theory. Classic strategies (like precautionary approach of the International Council for the Exploration of the Sea, ICES) were compared to...
We compare the productivity of technology adopters to non-adopters using
a cross-sectional survey of artisanal gillnet vessels on the east coast of
Peninsular Malaysia. Technologies include cell phones, GPS, sonar, and
mechanical winches for hauling nets. Stochastic frontier analysis is used to
measure differences in production frontiers and technical efficiency...
The New England Multispecies (groundfish) fishery is about to implement
the catch share management system, where self-identified groups of
harvesters called sectors receive quota allocations of total allowable catch
(TAC) proportional to the harvest history of their members. Joining a
sector is voluntary, thus there will be both sector members...
A Seafood Environmental Management Systems manual (SEMS) has been developed by Bord Iascaigh
Mhara (The Irish Sea Fisheries Board) in conjunction with the Irish fishing industry to encourage
fishermen to adopt an environmentally conscious, responsible and compliant approach to their business.
The documented risk-based SEMS approach developed is essentially a...
Aquaculture investments in virgin situations are subject to a large number
of variables and range in values. This is even more so when considering
investments in open ocean aquaculture.
The paper presents the key factors and results obtained for a proposed
large-scale open ocean aquaculture development in Western Australia with...
The Patagonian marine ecosystem is one of the most productive
ecosystems in the world, with important commercial shared/straddling
stocks. One of the highest mobility resources is the Argentine shortfin
squid (Illex argentinus). Its distribution is limited to the area of influence of
the warm-cold waters of sub-Antarctic origin, particularly of...
The present study employs a cointegration method and error correction model to analyze the long-run relationship and short-run adjustment of aggregated seafood import demand function for selected Caribbean countries. The results show that there exists a long-term equilibrium relationship between Caribbean seafood import and related factors. Import demand elasticity is...
The cumulative global loss of economic potential from fisheries over the
last 30 years is US $3 trillion. More than half of these fishery sector losses
come from developing countries. However, these are only primary costs
and do not take into account human security risks associated with poorly
governed fisheries....
Recent aggregate models of recreational participation have largely focused
on demand systems and choice models utilizing cross sectional data. While
these strategies may be advantageous for the estimation of welfare
measures, they have left unexplored the relationship between recreation
participation and general temporal economic trends. This research shifts its
focus...
Overcapacity is probably the most fundamental challenge to fisheries management as it can lead to both overfishing and to low profitability. Most of the Norwegian fisheries have limited entry, through the use of annual permits (coastal fleet) and licences (ocean going fleet) in combination with individual vessel quotas (IVQ). Limited...
Concerns about declining stock and profitability in the Tasmanian rock
lobster industry led to the introduction of individual transferable quota
(ITQ) management in 1998. In this study, fisher groups were categorised
by effort and quota ownership traits to examine response to revised
management, and how profit drivers moderated this change....
Since the 1990s, moored Fishing Aggregating Devices (FADs) have had a
sharp success in the Lesser Antilles and beyond, because they make it
possible for small nondecked fishing units to reach, at low costs, offshore
resources which they could do only seasonally or resources normally
accessible by large scale vessels...
The recovery of fish stocks is in principle an investment decision weighing up short term losses against
future gains. In the Common Fisheries Policy (CFP) of the EU long term management or recovery plans
are a main instrument. One of the basic aims is to move from a short term...
Substitution and elasticity give about the history of supply and the demand structure for fish and seafood. It is also relevant to the detection of change in a particular exploited marine ecosystem. The purpose of this paper is to test if market elasticity of substitution of seafood categories can further...
Individual transferable quotas (ITQs) have been used in several countries worldwide to regulate access to
marine fisheries. While ITQs can improve the economic efficiency of fisheries, in practice they are not a
panacea and distribution and equity issues have been raised in many cases. To overcome those issues,
ITQ systems...
A lot of efforts through different projects have been made to establish comanagement
mechanisms to manage small scale fishery in Sri Lanka.
Nevertheless, many of such attempts have by now proved to be futile
endeavors. More often than not, such attempts to establish co-management
mechanisms in small scale fishery in...
While French marine fisheries must cope with increasing difficulties, the concept of
multifunctionality of fisheries (as previously observed in agriculture) is emerging
through a diversification of activities. Indeed, fishers resort to alternatives in order to
sustain their activity by calling on new ways to interact with environment, institutional
players, scientists,...
The overall aim of this research project is to determine the socioeconomic impact of a live tilapia gathering and distribution centre on rural and peri-urban fish farmers. The study area is established in the fringes between urban and rural areas of Veracruz City, in Mexico. Previously, both the national and...
Traditionally, little attention was paid to the market and how the different levels of the market chain
interact. However, recent price developments and the increase in the retail chains’ market share have
raised awareness on the food supply chain and possible market power situations in Europe. This paper
uses 2004-2009...