ABSTRACT: We investigated how the network of food-web flows in open-ocean systems might support high rates of mesozooplankton respiration and production by comparing predicted rates from empirical relationships to independently determined solutions from an inverse model based on tightly constrained field-measured rates for the equatorial Pacific. Model results were consistent with estimates of gross:net primary production (GPP:NPP), bacterial production:NPP, sinking particulate export, and total export for the equatorial Pacific, as well as general literature values for growth efficiencies of bacteria, protozooplankton, and metazooplankton. Mean rate estimates from the model compared favorably with the respiration predictions from Ikeda (1985; Mar Biol 85:1-11) (146 vs. 144 mg C m^-2 d^-1, respectively) and with production estimates from the growth rate equation of Hirst & Sheader (1997; Mar Ecol Prog Ser 154:155-165) (153 vs. 144 mg C m^-2 d^-1). Metazooplankton nutritional requirements are met with a mixed diet of protozooplankton (39%), phytoplankton (36%), detritus (15%), and carnivory (10%). Within the food-web network, NPP of 896 mg C m^-2 d^-1 supports a total heterotrophic carbon demand from bacteria, protozoa, and metazooplankton that is 2.5 times higher. Scaling our results to primary production and zooplankton biomass at Stn ALOHA suggests that zooplankton nutritional requirements for high growth might similarly be met in oligotrophic subtropical waters through a less efficient trophic structure. Metazooplankton production available to higher-level consumers is a significant contributor to the total export needed for an overall biogeochemical balance of the region and to export requirements to meet carbon demand in the mesopelagic depth range.

中文翻译：

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食物网通量支持赤道太平洋中游浮游动物的高呼吸和生产

摘要：我们通过比较经验关系的预测速率与基于严格约束的实地测得速率的逆模型的逆向模型中独立确定的解的比较，研究了开放海洋系统中食物网流动网络如何支持中线浮游动物呼吸和生产的高速率。赤道太平洋。模型结果与赤道太平洋总净初级生产量（GPP：NPP），细菌总产量：NPP，沉没颗粒出口和总出口的估算以及细菌，原生藻和细菌的生长效率的一般文献价值相一致。 metazooplankton。该模型的平均速率估算值与池田（1985; Mar Biol 85：1-11）的呼吸预测值相比具有优势（146 vs. 144 mg C m ^-2 d^-1）和根据Hirst＆Sheader（1997; Mar Ecol Prog Ser 154：155-165）的增长率方程估算的产量（153对144 mg C m ^-2 d ^-1）。原生动物浮游动物（39％），浮游植物（36％），碎屑（15％）和食肉动物（10％）的混合饮食满足了超动物的营养需求。在食物网网络内，NPP为896 mg C m ^-2 d ^-1支持细菌，原生动物和后生浮游动物的总异养碳需求量高出2.5倍。将我们的结果扩展到Stn ALOHA的初级生产和浮游生物的生物量表明，在低营养的亚热带水域中，营养效率较低的营养结构同样可以满足浮游动物对高生长的营养需求。可供上级消费者使用的超球形浮游生物生产是该地区总体生物地球化学平衡所需总出口量以及满足中中度深度范围碳需求的出口需求的重要贡献。