Studies on the Ecological Physiology of Midwater Animals

中层水域动物的生态生理学研究

• 批准号: 9115551
• 负责人: James Childress
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115551&HistoricalAwards=false
• 关键词: Studies; Ecological; Physiology; Midwater; Animals

This study will use enzymatic indicators of metabolic function and direct measurements of respiratory rates to describe the pattern of metabolic potentials of midwater animals as a function of depth of occurrence, the presence of mid-depth oxygen minima, and body size. Preliminary data suggest that previous generalizations based on physiologically complex, visually-orienting fishes and crustaceans are not generally applicable to micronekton and zooplankton of other taxa which have largely been ignored in previous studies. This study will allow investigation of a broader range of animals than previously possible, especially those which are more fragile in structure, enabling us to extend the description of the patterns of variation in metabolic potential to all of the major midwater groups (with emphasis on chaetognaths, medusae, worms and molluscs and more superficial work on ctenophores and siphonophores). The research is directed at achieving a synthesis of the carbon fluxes through this ecosystem. This application of the research will be tested by collecting data on the biomass of the major groups of midwater animals in a 4100 m California Current water column and using the metabolic data to estimate respiratory carbon flux due to zooplankton and micronekton in this community.

本研究将使用代谢功能的酶指标和呼吸频率的直接测量来描述中层动物的代谢潜力模式，作为发生深度、中层最低氧含量的存在和体型的函数。初步数据表明，以前基于生理复杂、视觉导向的鱼类和甲壳类动物的概括并不普遍适用于其他类群的微游生物和浮游动物，而这些在以前的研究中很大程度上被忽略了。这项研究将允许对比以前更广泛的动物进行研究，特别是那些结构更脆弱的动物，使我们能够将代谢潜力变化模式的描述扩展到所有主要的中水类群（重点是毛颌动物、水母科、蠕虫和软体动物，以及对栉水母和管水母的更肤浅的研究）。该研究旨在实现通过该生态系统的碳通量的合成。该研究的应用将通过收集 4100 m 加州海流水柱中主要中层水域动物群体的生物量数据进行测试，并使用代谢数据来估计该群落中浮游动物和微游生物的呼吸碳通量。