Dissertation Research: EXPLORING THE DIFFERENTIAL UPTAKE AND BREAKDOWN OF PHOSPHORUS BY FRESHWATER BACTERIAL POPULATIONS

论文研究：探索淡水细菌对磷的吸收和分解的差异

• 批准号: 0710059
• 负责人: Katherine McMahon
• 金额: $ 1.2万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-15 至 2008-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0710059&HistoricalAwards=false
• 关键词: Dissertation; Research; EXPLORING; DIFFERENTIAL; UPTAKE

The accelerated eutrophication of surface freshwater due to human activity is a well-documented, but complex and poorly understood phenomenon. Freshwater eutrophication causes serious deterioration of ecosystem services and water quality worldwide and has been a persistent problem in central Wisconsin lakes since the late 1800's. Increased amounts of limiting nutrients, especially phosphorus, are considered the primary trigger for accelerated eutrophication. Microbes (primarily algae and bacteria) are thought to control the phosphorus cycle in lakes, yet a detailed understanding of the microbial participants driving this process is unknown. In this proposal the researchers aim to identify the primary bacterial populations that are involved in phosphorus cycling within eutrophic Wisconsin lakes. Identification of bacteria involved in both the uptake and breakdown of phosphorus containing compounds will aid in the identification of the mechanisms driving the phosphorus cycle in lakes and will lead to an improved ability to predict water quality in response to policy changes.

人类活动导致地表淡水加速富营养化是一种有据可查的现象，但这种现象复杂且人们知之甚少。 淡水富营养化导致全球生态系统服务和水质严重恶化，自 1800 年代末以来一直是威斯康星州中部湖泊的一个持续存在的问题。 限制性营养物质（尤其是磷）数量的增加被认为是加速富营养化的主要原因。 人们认为微生物（主要是藻类和细菌）控制着湖泊中的磷循环，但对推动这一过程的微生物参与者的详细了解尚不清楚。 在这项提案中，研究人员旨在确定威斯康星州富营养化湖泊中参与磷循环的主要细菌种群。 识别参与含磷化合物吸收和分解的细菌将有助于识别驱动湖泊磷循环的机制，并将提高预测水质以应对政策变化的能力。