The Role of Bacterial Processes in the Biogeochemistry of Humic Substances in the Okefenokee Swamp Ecosystem

细菌过程在奥克弗诺基沼泽生态系统腐殖质生物地球化学中的作用

• 批准号: 9222479
• 负责人: Robert Hodson
• 金额: $ 36万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1998-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222479&HistoricalAwards=false
• 关键词: Role; Bacterial; Processes; Biogeochemistry; Humic

The role of bacteria in recycling dissolved organic matter in freshwater and marine environments is, at present, pooly known. Yet because dissolved organic matter is one of the largest pools of biospheric carbon, knowledge of the processes involved in its formation and biological utilization is essential for a full understanding of global carbon cycling. One particular class of dissolved organic matter, the humic substances, is of particular interest because it makes up a very large fraction of the total dissolved substances (up to 80% in some natural environments) but has been very poorly studied in the past. We propose to examine the bacterial processes involved in recycling (formation and utilization ) of dissolved humic substances in a freshwater wetland in the southeastern United States (the Okefenokee Swamp Ecosystem).

细菌在循环溶解有机物中的作用 淡水和海洋环境目前知之甚少。 然而，由于溶解的有机物是最大的水池之一， 生物圈碳的研究，其所涉及的过程的知识 形成和生物利用是必不可少的充分 了解全球碳循环。 一种特殊的 溶解有机物，腐殖物质，是特别的， 因为它占了总数的很大一部分 溶解物质（在某些自然环境中高达80%）， 在过去研究得很少。 我们建议研究 参与再循环的细菌过程（形成和 淡水湿地溶解腐殖物质的利用 位于美国东南部（奥克弗诺基沼泽生态系统）。