Climate change is projected to affect the productivity of global fisheries. Management based on maximum sustainable yield (MSY) has been effective at eliminating overfishing in many regions. However, continuing to use yield-maximizing targets under climate-driven changes in productivity can result in higher anthropogenic pressure on populations subject to climate-related stress than maintaining status quo management targets. We demonstrate this effect using a theoretical example and case studies from snow crab in the eastern Bering Sea and a global marine fisheries database. In these examples, the conservation gain (i.e. biomass in the ocean) of maintaining status quo management targets is larger than the small gain in harvest made through climate adaptation in MSY-based management. The aggregate conservation gain of maintaining management targets increases as the harmful impacts of climate change on productivity worsen. Instead of climate-adaptive MSY-based targets, new management tools are needed to balance conservation and food production in ecosystems of populations displaying non-stationary productivity.

中文翻译：

---

适应气候的渔业管理目标的意外后果

预计气候变化将影响全球渔业的生产力。基于最大可持续产量（MSY）的管理在许多地区有效地消除了过度捕捞。然而，与维持现状管理目标相比，在气候驱动的生产力变化下继续使用产量最大化目标可能会给受气候相关压力影响的人口带来更高的人为压力。我们使用白令海东部雪蟹的理论示例和案例研究以及全球海洋渔业数据库来证明这种效果。在这些例子中，维持现状的保护收益（即海洋中的生物量）管理目标大于在基于 MSY 的管理中通过气候适应获得的小收获。随着气候变化对生产力的有害影响恶化，维持管理目标的总体保护收益增加。需要新的管理工具来平衡显示非固定生产力的人口生态系统中的保护和粮食生产，而不是基于气候适应性 MSY 的目标。