Dissertation Research: The Effects of Mixing and Storm Events on Lake Phytoplankton Production

论文研究：混合和风暴事件对湖泊浮游植物生产的影响

基本信息

批准号：
0508570
负责人：
George Kling
金额：
$ 1.2万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-07-15 至 2007-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508570&HistoricalAwards=false
关键词：
Dissertation Research Effects Mixing Storm

项目摘要

The proposed research will determine how storms affect the primary production (PP) of lake algae. Algae require both nutrients and light to sustain growth, and storm events affect the amounts of nutrients and light that are available to algae. Rain storms wash nutrients into lakes and redistribute nutrients within the lake. Wind storms also redistribute nutrients and cause algae to be exposed to different levels of light. Initial results of this research indicate that significant enhancement of PP from these physical forcing events may be unaccounted for in our current estimates of aquatic production. Specifically, this research will increase current understanding of aquatic ecosystems by combining observational studies, experimentation, and modeling. Algal primary production and water chemistry will be measured before, during, and after storm events. Experiments will be performed to determine the impacts of mixing on light and nutrients as they relate to algal growth. The results from these measurements and experiments will be used to construct a mathematical model to predict algal primary production. The new knowledge derived from this research effort will improve our understanding of the effects of storm events on lakes, and our ability to predict ecological responses to climate change. The broader impacts of the proposed research include training a Ph.D. student and improving the ability of scientists to predict how disturbance or changes in climate will impact aquatic ecosystems in the future.

拟议的研究将决定风暴如何影响藻类湖的主要产量（PP）。藻类需要营养和光以维持生长，风暴事件会影响藻类可用的营养和光的量。雨暴风雨将养分洗净到湖泊中，并在湖中重新分配营养。风暴还重新分配营养，并导致藻类暴露于不同水平的光线。这项研究的最初结果表明，在我们目前对水生生产的估计中，这些物理强迫事件的PP显着增强可能是不明显的。具体而言，这项研究将通过结合观察性研究，实验和建模来增加对水生生态系统的当前理解。在暴风雨事件发生之前，期间和之后，将测量藻类初级生产和水化学。将进行实验，以确定与藻类生长有关的混合对光和养分的影响。这些测量结果和实验的结果将用于构建数学模型，以预测藻类原代生产。从这项研究工作中获得的新知识将提高我们对风暴事件对湖泊影响的理解，以及我们预测对气候变化的生态反应的能力。拟议研究的更广泛影响包括培训A博士学位。学生并提高科学家预测气候变化的能力将如何影响水生生态系统。