Use of a Simple Age-Structured Bioeconomic Model to Estimate Optimal Long-Run Surpluses

摘要: When the New Zealand government introduced individual transferable quotas for major commercial fish stocks, initial allocation some stocks exceeded their total allowable catches and made it necessary to buy back immediately of quota. Quota was offered by tender. A simple age-structured bioeconomic model used estimate long-run optimal surpluses. From these, maximum prices that should be paid quota were derived. The use an proved convenient this purpose as parameter estimates tend arise naturally from literature sources population dynamics are transparent. If managed optimally, value would equivalent net present surplus at dynamic economic yield. Long-run surpluses dependent on relative changes in catch rates costs fishing which resulted stock biomass. Optimal up 45% greenwei...