Studies on compliance with fishing regulations have looked at fishery crimes for which the offender faces a one-period
decision problem of maximizing an expected utility. Moreover, the returns to the crimes are uncertain
because the offender may lose them if caught. This paper extends these models by considering a fishery...
Co-management has attracted considerable attention around the world, including in Vietnam. However, debates on the concept of community-based management (CBM), co-management (COM), and community participant management in Vietnam are increasing, and the abundance of projects in Vietnam has now become a major constraint. Although most pilot co-management projects are recorded...
This report presents the results of bio-economic assessment studies of the Bohai Sea & the Yellow Sea and the associated fisheries management. The studies, which were facilitated through workshop with the participation of international experts, included fisheries resources rent assessments and causal chain analysis to determine the rent losses in...
Australian Commonwealth fisheries have adopted maximum economic yield as a target reference point. A bioeconomic model has been developed for one key fishery - the Northern Prawn Fishery - and is used in the provision of management advice. The development and application of this model has highlighted some challenges for...
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...
Ideally, we seek to develop perfectly integrated ecological-economic models, drawing on the best data, modeling and knowledge of each of the disciplines, into one coherent model to inform policy. The realities of achieving such are thwarted by data and model compatibility issues. For example, ecological data may be available on...
This paper proposes a formal analysis of the discarding issue including the sorting labour costs. Empirical evidences from an application to the Nephrops fishery in the Bay of Biscay show that sorting is an important time consuming activity on board and a factor of discarding. However existing literature does not...
Fisheries models are generally built to assess the dynamics of a resource with a given fishing mortality
which level can be decided by some “decision maker” and/or which can be an observed process, e.g. times series proportional to some observed values of fishing effort. In these cases, the resource dynamics...
This paper analyzes the behavior of fishing households under individual transferable quotas (ITQ) system based on Singh, Squire and Strauss household model. ITQ system is sought to be the optimal fishery management regime in terms of economic efficiency. However, preceding theoretical analyses only considered implementing ITQ to a well established...
The National Marine Fisheries Service (NMFS) is mandated by law to analyze the benefits, costs, and economic impacts of the recreational fisheries policies it promulgates. NMFS has developed single species models that predict welfare and effort changes stemming from changes in various recreational regulations. Little is known, however, about angler...
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...
Illegal, unregulated and unreported (IUU) abalone fishing in South Africa has grown to such an extent that the legal total allowable catch has been progressively reduced from 640 tons in 1995, to a proposed zero for 2008. We present research on the socio-economics of the IUU abalone fishery and the...
We previously developed a spatially explicit, individual-based model (IBM) evaluating the bio-economic efficiency of fishing vessel movements between regions according to the catching and targeting of different species based on the most recent high resolution spatial fishery data. The main purpose was to test the effects of alternative fishing effort...
Although many fisheries around the world have long required explicit licensing for fishery participants, the use of limited entry licensing to control fishing effort has become a common practice in the last two decades. In contrast to Individual Fishing Quotas (IFQs), limited entry is only a step towards rights-based management....
The financial success of the Scottish whitefish fleet is directly affected by the outcome of the December
2005 EU fisheries council where the fisheries management measures are decided.
To assist government, vessel owners and industry bodies at the December council negotiations, the
Seafish economics team has developed a cost and...
We study the combined effects of periodically varying carrying capacity and survival rates on the fish population in the ocean (sea). We introduce a new delay differential equation model with a control parameter which describes how fish are harvested.
We consider a predation function as the function of the delayed...
This paper formulates a simple biomass growth model of a fishery. The property rights regime is of the unregulated local common property type with a fixed number of fishermen and where the fish stock is exploited in a myopic profit-maximizing manner. Within this resource management setting it is demonstrated that...
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 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 hilsa shad (Tenualosa ilisha) fishery is by far the largest single species fishery in Bangladesh. In this paper, a simple bio-economic year-class based model is developed to describe the fishery and examine its properties. With the help of this model, the optimum sustainable yield of the fishery is calculated...
Ecosystem based fishery management has moved beyond rhetorical statements calling for a more holistic approach to resource management, to implementing decisions on resource use that are compatible with goals of maintaining ecosystem health and resilience. Coupled economic-ecological models are a primary tool for informing these decisions. Recognizing the importance of...
This paper relates fish market and product development to consumer habits, perceptions, income, and other socio-economic factors through descriptive statistics and logic model analysis. The study collects and analyzes information needed for guiding public and private decisions in domestic fish market development. A 1994 survey interviewed a sample of 130...
Marine reserves have increasingly been recognised for their potential to address the pervasive problem of unsustainable harvest of fisheries worldwide. Abalone catch around Stewart Island has been in decline since the turn of the century despite being managed under NZ's quota system. A nested logit model is applied to spatially...
Reviewing traditional micro bio-economic models and the recently developed fisheries computable general equilibrium model, This research explores the possibility of constructing a disequilibrium framework in which fisheries are considered in a more realistic and convincing way based on evolutionary economic theory. The disequilibrium framework deals with heterogeneous fish producers and...
The paper develops a model of world frozen shrimp market using data from 1980 to 2004. There is a structural change in the world shrimp market that shifts the market volume from traditional to the non-traditional markets. Market structural change affects shrimp price significantly. Shrimp price has a trend and...
In many situation, fishing activity adversely impacts the state of the marine ecosystem, impacts which feed back to affect fish stocks. Some ecosystems appear to have multiple equilibria and exhibit hysteresis, whereby they can become stuck in low productivity states. We show how adding ecosystem dynamics to a classic fisheries...
Over the past fifteen years, the market for bluefin tuna has evolved in an attempt to further enhance the economic value of bluefin tuna landings. Historically, the US East Coast has been a major supplier of high quality bluefin tuna to Japan, the primary market for sashimi grade tuna. To...
The contribution of aquaculture development to the Vietnamese national economy and to farmers’ incomes has been documented in various government reports as well as working papers produced by development projects. However, the role of aquaculture in the life satisfaction of poor farmers has not been considered rigorously. In particular, it...
This paper explores the issue of using marine reserves in combination with quotas as fisheries management tools. The underlying biological dynamics are described by a patchy environment model, in which a metapopulation is built up by linked sub-populations that are distributed across a set of spatially discrete habitats or patches....
Van Chai are traditional fishing associations in Binh Dinh province, mainly distributing in coastal areas. In spite of experiencing many ups and downs, suffering great impacts of market economic and cultural integration, these villages still exist until now. However, many cultural features of the Van Chai have been gradually lost...
The Northern Prawn Fishery is one of the most valuable fisheries in Australia with a yearly estimated value of production of about $64mil. Nine prawn species are commercially harvested from the Northern Prawn Fishery with 80% of annual average catch represented by the banana prawn (Fenneropenaeus merguiensis) and the tiger...
A canvass of the resource economics literature of the last thirty years yields a limited number of applications of economic theory to the problems of recreational fishing. This neglect may be linked to the short shrift given to the control of recreational fisheries (relative to commercial fisheries) by fisheries managers...
This paper addresses to a comparative approach of long term changes in the characteristics of marine fisheries at a regional scale, in three ecosystems: up-welling, tropical and temperate. The South Moroccan
continental shelf, under the influence of the Canary current, where up-wellings take place, is the most productive part of...
Increasingly fishery managers are expected to take an ecosystem approach to fisheries management that accounts for the interrelationships of target species as well as non-target species and habitat. Fishery managers would benefit from coupled ecological-economic models that includes both the human and ecological aspects of the fishery and incorporates them...
A scientific knowledge gap exists with regard to how benthic habitat is affected by destructive fishing methods, such as bottom trawling, and how this impacts upon the productivity of commercial fish stocks. This
article addresses analytically the effects of destructive fishing practices of a single gear fishery on a non-renewable...
This study was commissioned by OWET to determine the possible economic benefits to Oregon and Oregon’s coastal communities from having a thriving wave energy industry. While wave energy industry growth will proceed along a continuous path, this study examines the economic impacts at three distinct stages: Research and Development Stage;...
Full Text:
input-output tool derived from IMPLAN, called the Fishery Economic Assessment Model
(FEAM), to model
This study was commissioned by OWET to determine the possible economic benefits to Oregon and Oregon’s coastal communities from having a thriving wave energy industry. While wave energy industry growth will proceed along a continuous path, this study examines the economic impacts at three distinct stages: Research and Development Stage;...
Full Text:
input-output tool derived from IMPLAN, called the Fishery Economic Assessment Model
(FEAM), to model
The majority of monitored fish stocks globally is fully or over exploited, that is, at or below their maximum sustainable yield stock levels. Despite this resource situation international trade in fish products have been increasing for a long time. An export tax on fish and fish products, as an alternative...
This paper develops an option value model to examine vessel owners in deciding to participate or not in the vessel buyback program. The model accounts for the uncertainty generally involved in a decision to retire an aged vessel and the underlying value of waiting for new information about the profitability...