SGER: Science of Opportunity: A SGER proposal to develop methods for the quantitative measurement of calcification rates of planktonic foraminifera

SGER：机会科学：SGER 提议开发定量测量浮游有孔虫钙化率的方法

• 批准号: 0842778
• 负责人: Victoria Fabry
• 金额: $ 3.5万
• 依托单位: California State University San Marcos Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0842778&HistoricalAwards=false
• 关键词: SGER; Science; Opportunity; proposal; develop

This Small Grant for Exploratory Research (SGER) will support the rapid development of a new method to quantify calcification rates in planktonic foraminifera. Planktonic foraminifera are a major group of biogenic carbonate producers in the world?s oceans, contributing an estimated 25% to 65% of the total deep marine calcite budget. Direct quantitative measurement of calcification rates in planktonic foraminifera is necessary for determination of calciu carbonate (CaCO3) production rates ? a key component of the global ocean CaCO3 budget, for documenting baseline planktonic calcification rates in today?s ocean for comparisons in future decades ? particularly in regions where warming and ocean acidification are projected to substantially change the physical and chemical environment of the upper ocean, and for investigating the response of planktonic foraminifera in CO2-perturbation experiments.The principal investigator on this project, a researcher at the California State University at San Marcos, will work with paleoceanographers this at the Wrigley Marine Science Center (University of Southern California) on Catalina Island to devise methods that will provide quantitative measurements of calcification rates of diver-collected and net-collected planktonic foraminifera. The new methods to be developed would combine her previous experience using radioisotopes as an index of calcification in shelled pteropods with the techniques used by colleagues at the Wrigley Laboratory and the University of California at Davis . Because the collection and culture methods of the USC and UC-Davis collaborators are very labor intensive and because they will soon close down their foraminiferal culturing facility, this collaborative venture is likely to be the last opportunity for this kind of multidisciplinary knowledge transfer for some time.The techniques developed here will be published and new protocols and data made available via the Internet (e.g., OCB web site and data base; planned IOCCP guidelines to best practices in ocean acidification research) so that others may use these methods in developing estimates of CaCO3 production, ocean acidification research, field measurements, and other applications.Broader impacts: The new methods developed are certain to be of great use to the broader community, particularly in ocean acidification research (perturbation experiments and measurements of field populations) and constructing budgets of the oceanic CaCO3 cycle. One undergraduate student and one graduate student will participate in all aspects of the work at Catalina Island and interact with UC Davis researchers and graduate students. Because nearly all CSUSM students must work to support themselves, funds for students are necessary for them to be able to participate in this unique opportunity.

这项探索性研究小额赠款（SGER）将支持一种量化浮游有孔虫钙化率的新方法的快速发展。浮游有孔虫是世界上主要的生物碳酸盐生产者。据估计，它们占深海方解石总量的25%至65%。直接定量测量浮游有孔虫的钙化速率对于测定碳酸钙（CaCO3）的生成速率是必要的。这是全球海洋CaCO3预算的关键组成部分，用于记录当今浮游生物钙化的基线率。未来几十年的对比？特别是在预计变暖和海洋酸化将大大改变上层海洋物理和化学环境的地区，以及在二氧化碳扰动实验中调查浮游有孔虫的反应。该项目的首席研究员是圣马科斯加州州立大学的一名研究员，他将与卡塔利娜岛瑞格利海洋科学中心（南加州大学）的古海洋学家合作，设计出一种方法，对潜水员收集的和网络收集的浮游有孔虫的钙化率进行定量测量。即将开发的新方法将把她以前使用放射性同位素作为有壳翼足类动物钙化指标的经验与瑞格利实验室和加州大学戴维斯分校的同事使用的技术结合起来。由于南加州大学和加州大学戴维斯分校的合作者的收集和培养方法是非常劳动密集型的，因为他们很快就会关闭他们的有孔虫培养设施，这次合作很可能是一段时间内这种多学科知识转移的最后一次机会。在此开发的技术将通过互联网发布，新的协议和数据将通过互联网提供（例如，OCB网站和数据库；计划的IOCCP关于海洋酸化研究最佳实践的指导方针），以便其他人可以使用这些方法来制定CaCO3产量估算、海洋酸化研究、实地测量和其他应用。更广泛的影响：开发的新方法肯定会对更广泛的社区有很大的用处，特别是在海洋酸化研究（扰动实验和野外种群测量）和构建海洋CaCO3循环预算方面。一名本科生和一名研究生将参与卡塔利娜岛的各个方面的工作，并与加州大学戴维斯分校的研究人员和研究生进行互动。因为几乎所有的CSUSM学生都必须工作来养活自己，所以为学生提供资金是必要的，因为他们能够参加这个独特的机会。