Fisheries management is characterised by multiple objectives, some of which may be complementary, while others may require trade‐offs between outcomes. Balancing these objectives is made more complex in the case of multispecies and multigear fisheries. In this paper, we develop a bioeconomic model that captures the key elements of such a fishery to test a range of potential harvest strategies to provide insights into how economic target reference points could lead to both desirable and undesirable management outcomes (e.g. discards). The model is developed as a long‐run optimisation model to identify target reference points to achieve multispecies maximum economic yield, and a dynamic recursive optimisation model, which includes more realistic representation of fishers’ behaviour, such as discards and trading of under‐caught species quotas. The potential economic, social and ecological impacts are evaluated using data envelopment analysis (DEA). The results suggest that the use of proxy target reference points can result in short‐term economic benefits at the cost of slower stock recovery and higher discarding. Limiting the number of species subject to quota controls may also prove beneficial in multispecies fisheries, while ensuring quota markets are efficient is likely to produce benefits irrespective of the harvest strategy adopted.

中文翻译：

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捕捞策略在实现多种渔业中多重管理目标方面的效力

渔业管理的特点是多个目标，其中一些目标可能是互补的，而另一些目标可能需要权衡结果。在多物种和多渔场渔业中，平衡这些目标变得更加复杂。在本文中，我们开发了一种生物经济模型，该模型捕获了这种渔业的关键要素，以测试一系列潜在的捕捞策略，从而提供洞察力，以了解经济目标参考点如何导致理想和不良管理结果（例如丢弃物）。该模型是作为长期优化模型开发的，用于识别目标参考点以实现多物种最大的经济收益；同时，该模型是动态递归优化模型，其中包括对渔民行为的更真实的表示，例如丢弃物和捕获不足物种的交易配额。使用数据包络分析（DEA）评估潜在的经济，社会和生态影响。结果表明，使用代理目标参考点可以带来短期的经济利益，但代价是库存恢复速度较慢，丢弃量较高。在多物种渔业中，限制受配额控制的物种数量可能也被证明是有益的，而无论采用何种捕捞策略，确保配额市场的高效都有可能产生效益。