Optimal multispecies harvesting in the presence of a nuisance species

摘要: Abstract Current knowledge of the complex relationships within ecological and economic systems make operationalizing ecosystem approaches fisheries management difficult. As these are developed, it is important to include non-target species that affect productivity (as prey) availability predators) targeted species. This study develops a multispecies bioeconomic model incorporates interactions determine optimal harvest each in presence "nuisance" species, which lowers value fishery by negatively affecting growth other ecosystem, has little its own. The populations walleye pollock, Pacific cod, arrowtooth flounder (a nuisance species) Bering Sea/Aleutian Islands region Alaska used as case study. Vessel-and gear-specific profit functions with multi-output production technologies used, along estimated stock dynamics equations, quotas subsidy on maximize this fishery. Ignoring results substantially less productive lower than joint management. highlights importance incorporating impact non-targeted ecosystem-based