The purpose of this project is to develop a bioeconomic model for fisheries in the Mediterranean and simulation computer software, which will allow testing of different management strategies. The work will be divided into the development of a theoretical background and building the conceptual model, development of the numerical model, elaboration of a simulation computer software and the validation of the model through case studies and dissemination. This project is expected to contribute both in practical and theoretical ways to the understanding of the functioning of Mediterranean fisheries and their management. A paramount aspect of this project is the exploration of new mathematical approaches, and their application to the modelling of Mediterranean fisheries.
The objective is to develop a theoretical bio-economic model for Mediterranean and Mediterranean-type fisheries, and a practical computer simulation model addressed to the management of these fisheries. This model and software should be sufficiently general and flexible to easily accommodate the realities of most Mediterranean fisheries, include multiple species and their interactions, multiple fleets and gear types, and all fisheries' management tools currently used by Mediterranean fisheries managers. It should produce a wide range of fisheries' performance measures, be dynamic, i.e. capable of simulating the fisheries over a long period, be stochastic to incorporate uncertainty in data and models and run on Windows platform.
Progress to Date
All types of existing, biological, fisheries models were analysed and the following three families of models were selected for the conceptual model: age-structured models, partially age-structured models and global (surplus production) models. These three families of biological models encompass the situations from data-rich case studies to data-poor case studies.
Following extensive reviews, the achievements of the models that more closely corresponded to the Mediterranean reality were selected (i.e. those models that consider Mediterranean fleet structure and dynamics, technical interactions among fishing gears, structure of cost and earnings, effort distribution and conversion of fleet capital and earnings into fishing power and effort).
The shortcomings of the present management schemes were analysed and alternative management scenarios proposed, which are to be tested during the second phase of the work package on case studies.
The development of the numerical methods required is being identified, reviewed and incorporated in a conceptual model. The necessary parameter estimation techniques and simulation techniques are being investigated, and results on estimation procedures and game theory are already available.
1) A conceptual bio-economic model for Mediterranean fisheries.
2) A set of algorithms to implement the bioeconomic model in a software package aimed at fisheries scientists, managers and industry.
3) A database with biological and economic data for selected case studies of Mediterranean fisheries.
FISHERIES AND AQUACULTURE, QUANTITATIVE APPROACHES AND MODELLING
Scientist responsible for the project
Dr. FRANCESC MAYNOU
Psg MarÝtim de la Barceloneta 37-49
Spain - ES
Phone: +34 932309500
Fax: +34 932309555
||CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS
||01 November 2001
||1 556 988 €
|Total EC contribution
||897 000 €
|Web address of the project