The Role of Mesozooplankton in the Biological Pump of the Central Equatorial Pacific Ocean

中赤道太平洋生物泵中中生动物的作用

• 批准号: 9022418
• 负责人: Hans Dam
• 金额: $ 20.48万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-10-15 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022418&HistoricalAwards=false
• 关键词: Role; Mesozooplankton; Biological; Pump; Central

This project constitutes a part of the United States Joint Global Ocean Flux Study to be conducted in the Central Equatorial Pacific in 1992. Metazoan zooplankton have been identified as the most likely agents for particle transformation and subsequent export of organic matter to deeper ocean layers. thus, understanding the functioning and assessing the efficiency of the biological pump, that is the downward fluxes of carbon and nitrogen resulting from the balance of production and consumption of biological material by the pelagic community, requires knowledge of the rates at which zooplankton consume and transform suspended particles. This project will examine in detail the role of metazoa zooplankton in the biological pump of the central equatorial Pacific Ocean. Sophisticated techniques will be used to assess the variability in the upper 200 m of mesozooplankton biomass, grazing rates and fecal matter production rates. Size specific and community based rates of phytoplankton consumption will be compared with phytoplankton production and fecal matter production will be related to particulate organic carbon and nitrogen flux to establish what percentage of the photosynthetically fixed carbon is ingested and potentially exported to deeper zones. this project will provide critical information necessary to quantify the flow of carbon and nitrogen in the upper layers of the central equatorial Pacific.

该项目构成了1992年在中央赤道太平洋进行的美国联合全球海洋通量研究的一部分。已经确定了Metazoan浮游生物是颗粒转化的最有可能的推理，随后将有机物出口到更深的海洋层。 因此，理解生物泵的功能和评估的功能和评估，即碳和氮的向下通量是由于浮力群落的生产和消耗生产和消耗生物材料所产生的，需要了解浮游动物消耗和转化悬浮颗粒的速度。 该项目将详细研究Metazoa Zooplankton在中央太平洋中央生物泵中的作用。 复杂的技术将用于评估中上200 m的中龙群生物量，放牧率和粪便生产率的变异性。 将浮游植物消费量的尺寸特异性和基于社区的速率与浮游植物的生产进行比较，粪便物质生产将与颗粒有机碳和氮通量有关，以确定将光合固定碳的百分比摄入，并潜在地导出到深地域。 该项目将提供必要的关键信息，以量化中央赤道太平洋上层中碳和氮的流动。