Mechanistic Controls of Carbon Flux by Mesozooplankton: A Joint Global Ocean Flux Study Synthesis

*** 9725976 Roman博士作为JGOFS综合和建模计划的一部分。Roman和Dam将合成JGOFS中浮游动物研究。JGOFS综合工作的一个主要目标是确定食物网结构如何影响欣快和下沉碳通量内的碳循环。中浮游动物放牧（浮游植物和原生动物的消耗）、草率进食（DOM释放）、粪便颗粒的产生和由于diel垂直迁移而向下的碳运输（碳输出的一部分）是这一分析的基本要素。虽然本提案的重点是中浮游动物，但我们的工作将与JGOFS的其他综合工作协同进行。他们将与其他正在合成和模拟生物地球化学通量的生物控制的小组一起参加。利用来自马尾藻海（ZOOSWAT）、北大西洋（NABE）、赤道太平洋（EqPac）、阿拉伯海（ASPS）和南大洋（AESOPS，如果有的话）的JGOFS数据集，以及其他适当的数据（即来自VERTEX和SUPER），他们将研究中浮游动物生物量、放牧和粪便颗粒产量与浮游植物生物量（按大小计算）、原生动物生物量、总初级产量（按大小计算）、新产量和出口通量之间的预测关系。这些结果将为欣快区碳循环的现实模型提供必要的参数。＊＊＊

*** 9725976 Roman As part of the JGOFS Synthesis and Modeling Initiative, Drs. Roman and Dam will synthesize JGOFS mesozooplankton research. A major objective of the JGOFS Synthesis efforts will be to determine how food web structure influences carbon cycling within the euphoric and the sinking carbon flux. Mesozooplankton grazing (consumption of phytoplankton and protozoa), sloppy feeding (DOM release), fecal pellet production and downward carbon transport due to diel vertical migrators (part of carbon export) are essential elements of this analysis. Although this proposal focuses on mesozooplankton, the our efforts will be collaborative with other JGOFS synthesis efforts. They will participate with other groups who are synthesizing and modeling biological control of biogeochemical fluxes. Using the JGOFS datasets from the Sargasso Sea (ZOOSWAT), North Atlantic (NABE), Equatorial Pacific (EqPac), Arabian Sea (ASPS) and Southern Ocean (AESOPS, when available), as well as other appropriate data (i.e. from VERTEX and SUPER) they will examine the predictive relationships between mesozooplankton biomass, grazing and fecal pellet production with phytoplankton biomass (by size), protozoa biomass, total primary production (by size), new production and export flux. The results will provide essential parameters for realistic models of carbon cycling in the euphoric zone. ***