enclosure for nearshore fisheries. For highly migratory and offshore fisheries, enclosure is inefficient, and customary law …

potential to impact tuna fisheries. This paper theoretically models and then applies the production function approach to … fisheries. By considering area, species and fishing methods, we provide spatially and biologically relevant information for the ….e. logarithmic and quadratic) relationship between the SST and the carrying capacity of tuna fisheries …

externalities appear along the lifecycle. In a simple model, we show that it may be efficient to subsidize innovative firms in their … early stages or to protect mature firms from competition to appropriate these externalities. However, non …-benevolent politicians may not choose efficient policies. Real-world examples indicate that politicians tend to concentrate on externalities …

. We identify an important asymmetry between positive and negative externalities and show that centralization may not be … efficient in economies with positive externalities even when regions are identical and centralization does not entail a loss of … accountability. We also show that decentralization can only Pareto dominate centralization in economies with negative externalities. …

We investigate externalities in higher education enrollment over the course of development in a two-sector model. Each … acquiring human capital. Both sectors exhibit productivity externalities in the size of the skill-specific labor and in the …