REU: An Experimental Study of the Effects of Nutrients and Inorganic Suspended Solids on Phytoplankton Community Structure

REU：营养物和无机悬浮固体对浮游植物群落结构影响的实验研究

• 批准号: 8717638
• 负责人: Val Smith
• 金额: $ 23.4万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-02-15 至 1990-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8717638&HistoricalAwards=false
• 关键词: REU; Experimental; Study; Effects; Nutrients

This research proposes direct tests of the applicability of resource-based competition theory to turbid aquatic ecosystems. It is hypothesized that experimental gradients of nitrogen, phosphorus, and clay turbidity will lead to predictable and repeatable changes in phytoplankton community structure in 0.33 cubic meter laboratory tanks. Subsequent field tests will be made to determine whether these trends can be repeated using in situ enclosures. Moreover, this research recognizes the potential importance of sedimentation losses in determining phytoplankton community structure, and will quantify their effects. Because measurements will also be made of zooplankton biomass and community structure, this research also complements ongoing studies of the effects of nutrients and inorganic suspended matter on aquatic food webs, currently being made elsewhere. It is intended that the proposed research will provide additional information on the ecological effects of suspended sediments, and will allow us to better predict the impact of future nutrient and erosion controls. This research should thus assist in the development of rational guidelines for the control of non-point source pollution to freshwater lakes and reservoirs.

这项研究提出了直接测试的适用性， 资源竞争理论应用于浊水生态系统。 假设氮的实验梯度， 磷和粘土浊度将导致可预测的， 浮游植物群落结构在0.33 立方米实验室储罐。 随后的实地测试将在 以确定这些趋势是否可以重复使用 原地围栏。 此外，这项研究承认， 沉积损失在确定 浮游植物群落结构，并将量化其 方面的影响. 因为浮游动物也会被测量 生物量和群落结构，这项研究也补充了 正在进行的营养素和无机物对 水生食物网上的悬浮物，目前正在 其他地方 拟议的研究将 提供更多关于生态影响的信息 悬浮沉积物，并将使我们能够更好地预测 未来养分和侵蚀控制的影响。 本研究 因此，应有助于制定合理的指导方针， 控制淡水湖泊的非点源污染， 水库