The Pacific sardine fishery is shared but independently managed by three nations: Canada, USA and Mexico. As a result, potential conflict scenarios may arise. A stochastic optimal control methodology is presented to analyze potential conflict scenarios by first considering a deterministic logistic stock growth function and adding a stochastic term,...
The International Food Policy Research Institute (IFPRI), the World Fish Center (ICLARM), and the Food and Agriculture Organization (FAO), are collaborating to incorporate fish into IMPACT, a global model of food supply and demand that estimates market-clearing prices for 28 commodities in 36 regions. Results of the projections to 2020...
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...
Milkfish has been farmed in Taiwan for over 300 years. Faced with a limited land resource, the industry is looking at the problem of how to maintain a sustainable and efficient production. This study specified a stochastic production frontier function to estimate potential milkfish farm output and efficiency by using...
The incorporation of fisheries commodities into the International Food Policy Research Institute’s (IFPRI) International Model for Policy Analysis of Agricultural Commodities and Trade (IMPACT) model suggests that demand for fisheries products will rise faster than supply over the next two decades, and that fishery commodity prices will rise relative to...
There is increasing awareness of and concern about the actual and potential adverse effects of fishing on the aquatic environment. New Zealand, like many other countries, has developed a range of initiatives to address specific issues related to the effects of fishing, including establishing marine reserves, fishing method restrictions, observer...
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....
In 1998, the Florida Keys National Marine Sanctuary initiated the “Tortugas 2000” planning process that would lead to the eventual designation (2001) of the largest marine reserve in the US: The Dry Tortugas Ecological Reserve (DTER). This resulting research, targeted commercial fishermen operating in the DTER region, determining the total...
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....
Seven economic instruments including property right regime, tradable permit, bond and deposit refund, liability, fiscal instrument, financial instrument, and charge system were considered for rehabilitations of coastal resources including mangrove, coastal water, coral, sea grass and seaweed, tourism, and fishery resources. Criteria on selective economic instruments were previous practice, management...
Traditional approaches to fisheries management, which have been singular, species-based and non-sectoral, have failed to protect the world’s fisheries resources. This has resulted in the overexploitation of fish stocks, displacement of fishing fleets and dislocation of fishing communities. The first attempts at international regulation of fisheries were simple, but premised...
The state of the world at the beginning of 21 century is terribly bad from all points of views such as environment, food supply, resources, economy and security essential for human survival. Our civilization based on technological development and mass consumption has been using up all resources on land and...
In 1998, the National Marine Fisheries Service (NMFS) launched a series of marine recreational angler expenditure survey in the Northeast (NE) management region (Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut, New York, New Jersey, Delaware, Maryland, and Virginia). This series was extended to the Southeast (SE) management region (North Carolina,...
The high ecological, social and economic value placed on Western Australia’s aquatic environment creates a significant obligation on the WA Department of Fisheries to develop and implement appropriate and sustainable resource management strategies for the State's fisheries and fish habitats. Historically, fisheries management in Western Australia has been based on...
Fisheries management has been carried out on the assumption that a fish population is in equilibrium with the fishing effort under the average environmental conditions and hence there must be a maximum sustainable yield (MSY). However, since the simultaneous rise and fall of the interdecadal and global scale of sardine...
At a hearing about the Green Paper (an analysis of the EU fisheries policy over the last 10 years and an outlook for the next decade) the following statement was given by an economist: „The Ecosystem Approach is the fata morgana of the fisheries biologists.“ Indeed, a lot of biologists...
The inclusion of ecosystem considerations in fisheries management implies two changes with extensive institutional repercussions: the uncertainties about states and outcomes rise dramatically and a multiplicity of new stakeholders, interests and objectives must be accommodated in the management institutions. The first change may potentially add immense costs to the management...