生物多样性和可持续渔业管理经济

海洋生态系统是非常复杂的,而且海洋生物种类之间也是相互依存的。相应的如果一个物种消失就会对其它物种产生一种级联效应。鱼类科学家倡导一种基于生态系统的手段来进行渔业管理,以满足长期可持续发展的目标。本论文对种类之间相互依存的复杂关系和生物总量与生物表现型多样化之间的关系进行模拟建模。结果表明,如果不考虑生物多样性,平衡的储备量和捕捞或生产量水平就会被高估。相应的如果鱼类种类是不同的,建立在单一渔业资源管理上的渔业政策往往会过高的估计捕获潜能,结果导致过度捕捞和鱼类资源储量的崩溃。

Economics of biodiversity and sustainable fisheries management

Marine ecosystems are complex,and many marine species are ecologically interdependent.As a result,losing a species could produce a cascading effect on other species. Fishery scientists advocate an ecosystem-based approach to fishery management to meet long-term sustainable goals.This paper models the complex interrelationships among species and the relationship between biomass growth and phenotypic diversity.We found that the equilibrium stock and catch/yield levels are overestimated when the diversity is not accounted for.Consequently,if species are diverse,fishery policy based on a single fishery management could overestimate catch potentials and potentially results in biological over fishing and stock collapse.