Bioeconomic losses from overharvesting tuna
Tom Kompas, R Quentin Grafton, Tuong Nhu Che
Conservation Letters | WILEY | Published : 2010
Stochastic dynamic programming is used to model the world's largest fishery-tunas of the western and central Pacific-and to show that adopting a biomass target that maximizes the discounted economic profits (BMEY) from harvesting would result in larger stocks compared to de facto biological targets, and also lower catches relative to business as usual. This result is obtained for the three major tuna species, including skipjack tuna, which is not currently considered to be overfished biologically. Gains from larger tuna stocks are shown to exceed US$ 3 billion and increase the likelihood of stock rebuilding as some of these higher profits could be used to compensate fishers and countries..View full abstract
Awarded by AusAid
The authors are grateful for the helpful comments of two referees and an editor. The authors gratefully acknowledge partial funding for this research that was provided by AusAid under agreement 50142.