We studied how local environmental and socio-economic factors impact fish supply and the price outcome of small-scale fisheries. We exploited day-to-day variations in sea surface temperature (SST) and cross-sectional differences in market distance and age of fishers to measure consumers’ responsiveness to price changes in a small-scale octopus fishery in Japan. Using the estimated demand parameters, we quantified the economic consequences of local socio-environmental factors in terms of changes in fishing revenue and consumer surplus. We found that increasing SST and an aging workforce increase the octopus supply and that consumers are responsive to price changes due to such supply shocks. Our results suggest that increasing SST and an aging workforce have positive net effects on fishing revenue and consumer surplus within the fishery. The octopus fishery provides a temporary source of income in the off-season of other species, smoothing the seasonal income variation of elderly fishers in the community.

中文翻译：

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海表温度、人口老龄化和市场距离对小规模渔业的经济影响

我们研究了当地环境和社会经济因素如何影响鱼类供应和小规模渔业的价格结果。我们利用海表温度 (SST) 的日常变化以及市场距离和渔民年龄的横截面差异来衡量消费者对日本小规模章鱼渔业价格变化的反应。使用估计的需求参数，我们根据渔业收入和消费者剩余的变化量化了当地社会环境因素的经济后果。我们发现，增加 SST 和老龄化的劳动力增加了章鱼的供应，并且消费者对这种供应冲击导致的价格变化做出了反应。我们的研究结果表明，增加 SST 和劳动力老龄化对渔业收入和渔业消费者剩余有积极的净影响。