DISSERTATION RESEARCH: Causes and consequences of cyanobacteria dominance and toxin production: Interactions among nutrient supply, nutrient ratios and light intensity

论文研究：蓝藻优势和毒素产生的原因和后果：营养供应、营养比例和光强度之间的相互作用

• 批准号: 1110536
• 负责人: Michael Vanni
• 金额: $ 1.47万
• 依托单位: Miami University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-06-01 至 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1110536&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Causes; consequences; cyanobacteria

This doctoral dissertation improvement project will study factors causing algal blooms in lakes and reservoirs. An experimental approach in which the absolute concentration of phosphorus, the amount of phosphorus relative to nitrogen, and the amount of light are manipulated will be used to assess how these factors affect the occurrence and abundance of algal species. The study will also assess what combination of factors lead to toxin production by blue-green algae.Many inland waters are impacted by excessive nutrient input, which can lead to surface scums of algae. This cultural eutrophication can lead to decreases in property values and recreational opportunities, and in some cases can result in disruptions of drinking water supplies. Understanding the factors leading to algal blooms is important in developing strategies to mitigate the effects of nutrient pollution in surface waters.

本次博士论文改进项目将研究湖泊和水库中藻华的成因。一种实验方法，其中磷的绝对浓度，磷相对于氮的量，以及光的量被操纵，将被用来评估这些因素如何影响藻类物种的发生和丰度。这项研究还将评估哪些因素的组合导致蓝绿藻产生毒素。许多内陆水域受到过多的营养输入的影响，这可能导致藻类的表面浮渣。这种文化富营养化可能导致财产价值和娱乐机会的减少，在某些情况下可能导致饮用水供应中断。了解导致藻华的因素对于制定减轻地表水营养物污染影响的策略非常重要。