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首页> 外文期刊>Environmental & Resource Economics >Considering Economic Efficiency in Ecosystem-Based Management: The Case of Horseshoe Crabs in Delaware Bay
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Considering Economic Efficiency in Ecosystem-Based Management: The Case of Horseshoe Crabs in Delaware Bay

机译：在基于生态系统的管理中考虑经济效率：以特拉华湾的马蹄蟹为例

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摘要

The welfare gains from incorporating ecosystem considerations into fisheries management are unclear and can vary widely between systems. Additionally, welfare gains depend on how ecosystem considerations are adopted. This paper uses an empirically parameterized bioeconomic model to explore the welfare implications of two definitions of ecosystem-based fisheries management (EBFM). We first define EBFM as a fishery management plan that maximizes the net present value of ecosystem services. We then explore an alternative definition that adds ecosystem considerations to a fishery managed with regulated open access. Our biological model reflects horseshoe crabs in Delaware Bay, which are harvested in a commercial fishery and are ecologically linked to migrating shorebirds populations, e.g. the endangered red knot. We find that introducing ecosystem considerations to a regulated open access fishery generates welfare gains on par with gains from addressing the commons problem even when fishery rents are completely dissipated. Additionally, solving the commons problem within an EBFM approach can provide substantial welfare gains above those from solving the commons problem in a single-species management framework.
机译：将生态系统因素纳入渔业管理所产生的福利收益尚不清楚，并且在不同系统之间差异很大。此外，福利的增加取决于如何采用生态系统考虑。本文使用经验参数化的生物经济模型来探讨基于生态系统的渔业管理（EBFM）的两个定义对福利的影响。我们首先将EBFM定义为使生态系统服务的净现值最大化的渔业管理计划。然后，我们探索了另一种定义，该定义为通过管制的开放获取管理的渔业增加了生态系统方面的考虑。我们的生物学模型反映了特拉华湾的horse，这些crab是在商业渔业中收获的，并且与迁徙的shore鸟种群生态相关，例如濒临灭绝的红色结。我们发现，将生态系统考虑因素引入受管制的开放式渔业中，即使在渔业租金被完全消散的情况下，也可以从解决公地问题中获得收益。此外，在EBFM方法中解决公地问题可以提供比在单一物种管理框架中解决公地问题大得多的福利收益。

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