Recreational fishing benefits associated with angling opportunity, such as fishing season duration and certainty of season duration, may outweigh trip-based benefits, such as retained catch, in measures of angler utility. We developed an age-structured population dynamics model to predict how these three beneficial attributes are affected by four recreational management parameters: minimum size limit; bag limit; inter-season quota transfer limits; and in-season adjustment of season duration. We incorporated results of stated-preference angler surveys to produce a bioeconomic model for two case studies: Atlantic Florida red snapper, and central Oregon Pacific halibut. In maximizing long-term total utility, a strong trade-off between season length and retained daily catch was observed in both fisheries, arising from increased minimum size limits which lengthened fishing seasons but reduced daily retained catch. The optimal management policy across the combination of beneficial attributes was sensitive to assumptions of the curvature of utility functions, i.e. to the degree to which anglers value those attributes with diminishing marginal returns, but generally involved satisfying the strong stated preferences for increased angling opportunity.

中文翻译：

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将保留的每日捕获量换成更长的季节，以最大限度地提高休闲渔业管理中垂钓者的利益

在衡量垂钓者效用时，与垂钓机会相关的休闲捕鱼收益（例如捕鱼季节持续时间和季节持续时间的确定性）可能超过基于旅行的收益（例如保留渔获量）。我们开发了一个年龄结构的人口动态模型来预测这三个有益属性如何受到四个娱乐管理参数的影响：最小规模限制；行李限额；赛季间配额转会限制；以及季节持续时间的季节性调整。我们结合了陈述偏好垂钓者调查的结果，为两个案例研究生成了一个生物经济模型：大西洋佛罗里达红鲷鱼和俄勒冈州中部太平洋大比目鱼。在最大化长期总效用方面，在两个渔业中观察到季节长度和保留的每日渔获量之间的强烈权衡，由于增加了最小尺寸限制，延长了捕鱼季节，但减少了每日保留渔获量。跨越有益属性组合的最佳管理政策对效用函数曲率的假设敏感，即垂钓者重视边际收益递减的那些属性的程度，但通常涉及满足对增加垂钓机会的强烈偏好。