An age-structured bioeconomic model, which is completely continuous in age and time, is developed in order to compare with traditional discrete models. Both types have advantages and disadvantages. The continuous framework complements discrete models as it allows for deeper and more transparent analytical study and leads to analytical results that would be difficult to achieve within a discrete framework. To make the model realistic, a nonlinear recruitment function is introduced and steady state solutions and constant-effort optimal fishing are studied analytically. In addition, the framework has been used for numerical analysis. Simulations are used to investigate how optimal harvesting patterns vary with parameter values.
Globalization is characterized not only by economic growth and prosperity but also by increasing pressure on natural resources, unsustainable patterns of consumption and production and increasing inequality. To study these global challenges and their impact on development processes authors identified modern trends in the field of bioeconomy and biotechnology developments, analyzed the main government programs, strategies, funds and statistical information from open sources. The basic principles of bioeconomy methods in agro, food and food security in European countries and in Russian Federation were determined and Genetic engineered organisms statistic, policy and public attitudes from open sources in Russia and European countries were compared
We model the evolution of a trans-boundary marine fishery, which is based on the harvesting of a single “highly-migratory” stock and is beginning to be impacted by regional oceanic-climate changes. The fish-stock’s range will be composed of a number of jurisdictional zones: namely, its intersection with the EEZ of each coastal country for which that intersection is non-trivial. There may also be a zone within international waters of the high seas. We also assume that management of the fishery is vested in a Regional Fishery Management Organization, whose members are countries that are “direct stakeholders” in the fishery—being either one of the above countries with jurisdictional authority in a zone or a country that has registered fishing vessels that are licensed to harvest in the fishery, or both.