The Role of Bacterial Processes in the Biogeochemistry of Humic Substances in 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，其过程中所涉及的知识， 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 淡水湿地中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）。

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).