The importance of social and economic factors, in addition to biological factors, in fisheries management is being increasingly recognised. However, exploration of trade-offs between biological, social, and economic factors under different sustainable catch limits for recreational and commercial fisheries is limited, especially in Europe. The European sea bass (Dicentrarchus labrax) is valuable and important for both commercial and recreational fisheries. Stocks have rapidly declined and management measures have been implemented, but trade-offs between social, biological, and economic factors have not been explicitly considered. In this study, a system dynamics model framework capturing biological and economic elements of the European sea bass fishery was developed and refined to incorporate a catch limit reflecting sustainable fishing with adjustable partition between recreational and commercial sectors, under low, medium, or high recruitment. Model outputs were used to explore the relative impact of different catch allocations on trade-offs between biological sustainability and economic impact when recruitment was limiting or not. Recruitment had a large impact on the fish population dynamics and the viability of the sectors. At high and moderate recruitment, management contributed to stock sustainability and sector economic impact, but recruitment is important in determining the balance between sectors.

中文翻译：

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平衡商业和休闲渔业的生物和经济目标：鲈鱼渔业的系统建模

除了生物学因素外，社会和经济因素在渔业管理中的重要性正日益得到认可。然而，在娱乐和商业渔业的不同可持续捕捞限制下，生物、社会和经济因素之间的权衡探索是有限的，尤其是在欧洲。欧洲鲈鱼 (Dicentrarchus labrax) 对于商业和休闲渔业都很有价值和重要。存量迅速下降，管理措施已经实施，但尚未明确考虑社会、生物和经济因素之间的权衡。在这项研究中，开发和改进了一个捕捉欧洲鲈鱼渔业的生物和经济要素的系统动力学模型框架，以纳入反映可持续捕捞的捕捞限制，并在低、中或高招募情况下在娱乐和商业部门之间进行可调节的划分。模型输出用于探索不同渔获分配对生物可持续性和经济影响之间权衡的相对影响，当招聘是否受到限制时。招募对鱼类种群动态和部门的生存能力产生了很大影响。在高度和适度的招聘中，管理层对库存可持续性和行业经济影响做出了贡献，但招聘对于确定行业之间的平衡很重要。或高招聘。模型输出用于探索不同渔获分配对生物可持续性和经济影响之间权衡的相对影响，当招聘是否受到限制时。招募对鱼类种群动态和部门的生存能力产生了很大影响。在高度和适度的招聘中，管理层对库存可持续性和行业经济影响做出了贡献，但招聘对于确定行业之间的平衡很重要。或高招聘。模型输出用于探索不同渔获分配对生物可持续性和经济影响之间权衡的相对影响，当招聘是否受到限制时。招募对鱼类种群动态和部门的生存能力产生了很大影响。在高度和适度的招聘中，管理层对库存可持续性和行业经济影响做出了贡献，但招聘对于确定行业之间的平衡很重要。