GLOBEC Collaborative Research: Effects of Seasonal and Interannual Variability of Zooplankton Populations in the California Current System Using Coupled Biophysical Models

GLOBEC 合作研究：使用耦合生物物理模型研究加州海流系统中浮游动物种群的季节和年际变化的影响

• 批准号: 0002892
• 负责人: Dale Haidvogel
• 金额: $ 30.5万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-07-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0002892&HistoricalAwards=false
• 关键词: GLOBEC; Collaborative; Research; Effects; Seasonal

The California Current System (CCS) owes its high phytoplankton productivity to wind-driven circulation patterns that bring nutrient?rich waters to the surface. These high rates of primary productivity are translated via high zooplankton secondary productivity, into high biomass of epipelagic fishes such as anchovies, hake, and salmon. Further, spatial patterns of high primary and secondary productivity are heterogeneous and appear to be closely linked to mesoscale physical structures (e.g., filaments, jets, and eddies). Using a series of linked physical/ecosystern/zooplankton models, this study will examine the complex interaction of physical and biological processes (diel vertical migration and growth efficiency) in the CCS on seasonal and interannual time?scales. Major calanoid copepods (e.g., Calanus pacificus and Metridia pacifica) and euphausiid species (e.g., Euphausia pacifica and Thysanoessa spinifera) that represent critical linkages between primary production and salmon populations will be emphasized. In addition, the roles of these processes will be further illuminated through comparative studies with other ecosystems located within both similar and dissimilar dynamical environments.The goal of this study is to address the following questions: How does the circulation field impact the distribution and population success of major CCS zooplankton species such as C. pacificus, M. pacifica, E. pacifica, and T. spinifera? How do the behavioral and bioenergetic differences of these species interact with the circulation field, prey distribution and temperature to influence their relative population success? How does the interannual variability of the local environment (e.g., from large?scale atmospheric or oceanic fluctuations) modify these distributions and relative success of major CCS zooplankton species? How do physical and biological aspects of the CC/Zooplankton System compare to other well?studied ecosystems including those of particular interest to GLOBEC (e.g., Georges Bank, Gulf of Alaska, and Southern Ocean)?The results of this study will include the developed ecosystem and zooplankton models, applied within regional and basin?scale circulation models. The coupled systems will be analyzed under seasonal and realistic surface forcing closely tied to CCS process studies. Furthermore, a comparative synthesis of physical and biological coupling within this and other well?studied GLOBEC ecosystems will begin.

加利福尼亚电流系统（CCS）将其高浮游植物的生产力归功于风向循环模式，这些循环模式将营养丰富的水带到了地表。这些高生产率的高速率通过高浮游动物的二级生产力转化为高生生物量，例如凤尾鱼，始终和鲑鱼。此外，高级和次要生产率的空间模式是异质的，似乎与中尺度的物理结构（例如细丝，喷气机和涡流）密切相关。使用一系列链接的物理/ecosystern/浮游动物模型，本研究将检查CCS在季节性和年际时间尺度上的物理和生物过程（DIEL垂直迁移和生长效率）的复杂相互作用。将要强调主要的calanoid copepods（例如Calanus pacificus和Metridia pacifica）和Euphausiid物种（例如Euphausia pacifica和Thysanoessa spinifera），这些物种代表了初级生产和鲑鱼种群之间关键联系。此外，通过与位于相似和相似动力环境中的其他生态系统的比较研究，这些过程的作用将进一步阐明。本研究的目的是解决以下问题：循环场如何影响主要CCS Zooplankton物种的分布和人口成功，例如C. c. pacificus，M.Pacifica，E.Pacifica，E.Pacifica，E.Pacifica，e.pacifica，spin.spinifera和T. Spinifera和T. Spinifera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T. Spinera和T。 这些物种的行为和生物能差异如何与循环场相互作用，捕食分布和温度以影响其相对人口成功？ 当地环境的年际变异性（例如，大型大气或海洋波动）如何改变这些分布和主要CCS浮游动物物种的相对成功？ CC/浮游动物系统的物理和生物学方面与其他井的生态系统相比如何？包括Globec特别感兴趣的生态系统（例如Georges Bank，Alaska的Georges Bank，Alaska的Gulf和Southern Ocease）？这项研究的结果将包括开发的生态系统和浮游动物模型，在区域和基础范围内应用模型？耦合系统将在季节性和逼真的表面下进行分析，从而与CCS过程研究紧密相关。此外，在该井和其他井中研究的Globec生态系统中的物理和生物耦合的比较合成将开始。