Chum salmon (Oncorhynchus keta) are distributed widely in the subarctic North Pacific. The Japanese stock is maintained by artificial release procedures. Chum salmon, including the Japanese stock, provide important ecosystem services for humans that are related to provisioning, culture and support. These ecosystem services are supported by the supply of prey and habitat that the fish use. We regard the supply of prey and habitat as supporting services for salmon. We developed a procedure to estimate supporting services quantitatively, based on the prey biomass consumed by individual salmon, by coupling a bioenergetics model and a lower trophic level ecosystem model. Using this procedure, we estimated the prey biomass consumed by a cohort of Japanese chum salmon released in a single year. The phytoplankton biomass indirectly consumed by a cohort was also estimated and considered to be the primary production supporting the fish. The Japanese chum salmon cohort was estimated to consume ca. 4.2–4.7 × 10⁹ kg wet weight of zooplankton, of which more than half is eaten in the Bering Sea. The Japanese chum salmon cohort is supported by an estimated primary production of 2.0–2.2 × 10⁹ kg C, which amounts to 0.17%–0.19% of primary production in the areas and periods through which the fish migrate. We also attempted to calculate the monetary value of supporting services for the growth of Japanese chum salmon.

大马哈鱼（Oncorhynchus keta）广泛分布于北极北太平洋。日本库存通过人工释放程序进行维护。鲑鱼，包括日本种群，为人类提供了重要的生态系统服务，与供应，养殖和支持有关。这些生态系统服务得到鱼类使用的猎物和栖息地的支持。我们将猎物和栖息地的供应视为鲑鱼的辅助服务。我们通过结合生物能学模型和较低营养水平的生态系统模型，基于单个鲑鱼消耗的猎物生物量，开发了一种程序来定量评估支持服务。使用此程序，我们估算了一群在一年内释放的日本鲑鱼所消耗的猎物生物量。还估算了一个群体间接消耗的浮游植物生物量，并将其视为支持鱼类的主要产品。据估计，日本密友鲑鱼消费量CA。4.2–4.7×10 ⁹ 千克湿重浮游动物，其中一半以上在白令海被捕食。日本密宗鲑鱼群的初级产量估计为2.0–2.2×10 ⁹  kg C，占鱼类迁移所处地区和时期初级产量的0.17％–0.19％。我们还尝试计算了支持日本鲑鱼生长的服务的货币价值。