Gear technologists have, in recent years, developed rigid sorting grids, Sort-X, in bottom trawls, to improve the size selectivity of this type of gear. Experiments with the Sort-X system in the aft sections of trawls were carried out aboard Norwegian and Russian trawlers along the coast of Northern Norway and...
The development of several sub-fields of general economics, including those of bounded rationality, institutional economics and the evolutionary economics, has expanded the scope and intensity of the dialogue both within economics, as well as between economists and other scientists. One of the more important preoccupations of early evolutionary economics was...
The artisanal fishery in Senegal is characterized by composite biological, technological economical dynamics in interaction. A computer model of the exploitation is presented to study the relationships existing between resources, production, trading, consumption (dynamic approach). The model is developed using a systemic approach. The computer transcription utilizes multi-agent formalism (artificial...
Applied research is often motivated by the economic benefits it will give rise to. These benefits are due to either improved production techniques or new products. The realisation of these objectives depends much on the assessment of different research alternatives and allocation of resources between them. Also within aquaculture research...
The natural market selection of the Italian aquaculture farms, mainly happened in the years' 90, need to determine and check their strength and weakness points: this will be capable either to modulate the managerial strategies in function of market trend and set up entry barriers. The study has been carried...
Tins paper addresses the importance of different product farms and their origin when considering the market structure in the European salmon market. The competition between Farmed Atlantic salmon and wild-caught pacific salmon has received some attention previously. However, this was before frozen Atlantic salmon emerged as an important product form...
Market failure in open access fisheries usually results in economic losses, because the most efficient means of harvesting fish resources are not used, and because fish resources are not allocated to the use with the highest social marginal value. In efficient, competitive markets, pricing mechanisms would ensure the optimal allocation...
The basic hypothesis underlying this paper is that the amount of fishing that a fisher undertakes over a year is not determined solely by circumstances which are exogenous to the fisher, such as weather conditions and resource availability, but are the subject of individual choice. As such, the decision can...
Under the new Law of the Sea, the definition of exclusive zones was considered an important first step towards improved management of the world's fisheries. However, one of the limits to the effectiveness of extended Jurisdictions was the problem of transboundary fish stocks. This question recently appeared at the centre...
The following paper presents the results of a detailed investigation into the distribution, characteristics and performance of fisheries management systems in the major fisheries of north-east Nigeria (Upper River Benue, Lake Chad and the Nguru-Gashua Wetlands). A key focus of the research was to examine the possibilities for using a...