RPG: Carbohydrate Dynamics in Aquatic Systems: Sources and Biological Cycling

RPG：水生系统中的碳水化合物动力学：来源和生物循环

• 批准号: 9408127
• 负责人: Merryl Alber
• 金额: $ 1.8万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-09-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9408127&HistoricalAwards=false
• 关键词: RPG; Carbohydrate; Dynamics; Aquatic; Systems

9408127 Alber Carbohydrates are a major component of the dissolved organic carbon (DOC) in natural waters. The purpose of the projected research will be to examine carbohydrate dynamics in aquatic systems from both a biogeochemical and a trophodynamic (e.g., microbial loop) perspective. The biogeochemical perspective involves comparing the carbohydrate composition of various source materials (terrestrial and aquatic plants, macroalgae, phytoplankton, zooplankton, bacteria) to determine whether there are biochemically consistent compositional differences that would be useful indicators of sources of DOC in natural waters. There has been only a limited amount of work to date on this question, in large part because of the analytic difficulty of detecting individual carbohydrates. The proposed work will seek to extend previous studies on the carbohydrate composition of source material and to test the utility of using carbohydrate signatures as geochemical tracers by comparing them to measurements made in field samples. If this approach proves fruitful, it will improve understanding of the relative contribution of various sources of DOC to natural waters.

9408127阿尔伯碳水化合物是天然沃茨中溶解有机碳（DOC）的主要成分。 预计研究的目的将是从生物地球化学和营养动力学两个方面研究水生系统中的碳水化合物动态（例如，微生物循环）的观点。 生物地球化学的观点涉及比较各种源材料（陆生和水生植物，大型藻类，浮游植物，浮游动物，细菌）的碳水化合物组成，以确定是否有生物化学一致的组成差异，这将是在自然沃茨DOC来源的有用指标。 到目前为止，在这个问题上的工作量有限，很大程度上是因为检测单个碳水化合物的分析困难。 拟议的工作将寻求扩大以前对源材料的碳水化合物组成的研究，并通过将碳水化合物特征与实地样品中的测量结果进行比较来测试使用碳水化合物特征作为地球化学示踪剂的效用。 如果这种方法被证明是有效的，它将提高对各种DOC来源对自然沃茨的相对贡献的理解。