EAR-PF: The Source and Composition of Refractory Dissolved Organic Matter Accumulating in Aquatic Environments

Stuart Goldberg博士获得美国国家科学基金会地球科学博士后奖学金，在斯克里普斯海洋学研究所开展研究和教育项目。戈德堡博士将确定太浩湖盆地三个湖泊中溶解有机物的起源、年龄、组成和积累机制。戈德堡博士将测量优先保存的脂质中碳同位素（12C和13C）和氢同位素（H和D）的丰度，以推断有机物（例如陆生植物、土壤或水生植物）的来源。有机化合物的年龄将用14C测定。这项研究的结果将有助于理解陆地和水生环境中现代和过去的碳循环。此外，Goldberg博士将为高中生和入门级研究生的科学教育做出贡献。戈德堡博士将指导两名高中生完成他们的科学展览项目，他将带领研究生进行讨论和实验室工作，这些讨论和实验室工作与利用有机物的同位素组成研究自然过程有关。

Dr. Stuart Goldberg is awarded an NSF Earth Science Postdoctoral Fellowship to carry out a program of research and education at Scripps Institution of Oceanography. Dr. Goldberg will determine the origin, age, composition, and accumulation mechanisms of dissolved organic matter from three lakes in the Lake Tahoe Basin. Dr. Goldberg will measure the abundance the carbon isotopes (12C and 13C) and hydrogen isotopes (H and D) in preferentially preserved lipids to infer the origin of the organic matter (for example, terrestrial plants, soils, or aquatic plants). The age of the organic compounds will be determined using 14C. The results from this research will contribute the understanding of the modern and past carbon cycle in terrestrial and aquatic environments. In addition, Dr. Goldberg will contribute to the scientific education of high school students and entry level graduate students. Dr. Goldberg will mentor two high school students on their science fair projects and he will lead graduate students in discussions and laboratory work relate to the study of natural processes using the isotopic composition of organic matter.