Abstract

Straddling fish stocks (broadly defined) present us with the most difficult capture fisheries management problem that we have encountered in our examination of the management of world capture fisheries. In this chapter, we turn our attention to the study of one straddling stock (narrowly defined), Norwegian spring spawning herring, and one highly migratory stock, East Atlantic bluefin tuna. For each stock, multi agent bioeconomic models are developed and analysed under different management scenarios. Both cases involve fishery resources that had been heavily overexploited in the past, and in which a major resource investment programme was seen to be very much in order. While herring provides an example of a striking resource management success, tuna is an example of quite the reverse. The reasons behind this marked difference in the success of the two resource investment programmes are analysed.

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