Dissertation Research: The Effects of Cyanobacterial Blooms on Aquatic Communities and Ecosystem Functioning

论文研究：蓝藻水华对水生群落和生态系统功能的影响

• 批准号: 1010862
• 负责人: Nelson Hairston
• 金额: $ 1.5万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2012-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1010862&HistoricalAwards=false
• 关键词: Dissertation; Research; Effects; Cyanobacterial; Blooms

The alteration of biogeochemical cycles by anthropogenic activity has modified ecological interactions in ecosystems across the globe. In aquatic ecosystems, nutrient pollution has increased eutrophication, creating biological, chemical, and physical differences between low-nutrient (oligotrophic) and high-nutrient (eutrophic) lakes. Simultaneously, blooms of planktonic cyanobacteria are increasing in both types of lakes, with the potential to have substantial effects on ecological dynamics in them. The goal of this research is to determine the effects of cyanobacterial blooms on aquatic communities and ecosystems, and how nutrient pollution mediates the effect of cyanobacterial blooms on lake processes. Field experiments will be combined with an analysis of long-term data from the Global Lake Ecological Observatory Network to address these goals.As cyanobacterial blooms increase in frequency and geographical range, understanding their ecological effects is increasingly critical for defining appropriate lake management strategies. Results from this research will inform lake management practices in New England, and will be disseminated to citizen scientists and schoolchildren via collaboration with a non-profit lake association in New Hampshire. The resulting global lake analyses will contribute to a limnology course for high school students and to laboratory modules for undergraduate courses.

通过人为活性改变生物地球化学循环的改变已改变了全球生态系统的生态相互作用。 在水生生态系统中，养分污染增加了富营养化，从而在低营养（贫营养）和高氮（富营养化）湖泊之间产生了生物学，化学和物理差异。同时，两种类型的湖泊中浮游生物蓝细菌的开花都在增加，并有可能对它们的生态动力学产生重大影响。 这项研究的目的是确定蓝细菌花朵对水生群落和生态系统的影响，以及营养污染如何介导蓝细菌花朵对湖泊过程的影响。 现场实验将与对全球湖泊生态天文台网络的长期数据的分析相结合，以解决这些目标。随着蓝细菌的开花的频率和地理范围的增加，了解它们的生态影响对于确定适当的湖泊管理策略至关重要。这项研究的结果将为新英格兰的湖泊管理实践提供依据，并通过与新罕布什尔州的非营利性湖泊协会合作将公民科学家和学童传播。由此产生的全球湖泊分析将为高中生和本科课程的实验室模块介绍一门羊水学课程。