Environmental Significance of Population Diversity in Methane-Oxidizing Bacteria

甲烷氧化细菌种群多样性的环境意义

• 批准号: 9707383
• 负责人: Mary Lidstrom
• 金额: $ 5万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-15 至 2000-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9707383&HistoricalAwards=false
• 关键词: Environmental; Significance; Population; Diversity; Methane

ABSTRACT 97-07383 Lidstrom Environmental significance of population diversity in methane-oxidizing bacteria This project investigates different classes of methane-using bacteria to ascertain their properties in a natural ecosystem: the sediments of Lake Washington, Seattle. Newly developed environmental gene probes will be used to enumerate specific classes of methane-utilizing bacteria, and these results will be correlated with process measurements for trace gas cycling by these bacteria. Bacteria that use methane gas are important components of natural ecosystems. Methane gas is produced from the natural breakdown of dead organisms, and these bacteria consume this gas, keeping the carbon in the methane within the ecosystem. Methane gas that escapes from aquatic and terrestrial ecosystems enters the atmosphere, where it becomes a greenhouse gas with a potentially significant contribution to global warming. It is important to understand natural populations of methane-utilizing bacteria, and the details of how these bacteria cycle trace gases such as methane.

摘要 甲烷氧化细菌种群多样性的环境意义 本项目调查不同类别的甲烷利用细菌，以确定它们在自然生态系统中的特性：华盛顿湖，西雅图的沉积物。 新开发的环境基因探针将被用来枚举特定类别的甲烷利用细菌，这些结果将与这些细菌的微量气体循环过程测量。利用甲烷气体的细菌是自然生态系统的重要组成部分。 甲烷气体是由死亡生物的自然分解产生的，这些细菌消耗这种气体，将甲烷中的碳保持在生态系统中。 从水生和陆地生态系统中逃逸的甲烷气体进入大气层，在那里它成为一种温室气体，对全球变暖有潜在的重大贡献。重要的是要了解自然种群的甲烷利用细菌，以及这些细菌如何循环微量气体，如甲烷的细节。