Microbial Biogeochemistry and Functional Diversity across the Forest-Tundra Ecotone in the Rocky Mountains

落基山脉森林-苔原生态交错带的微生物生物地球化学和功能多样性

• 批准号: 0084223
• 负责人: Steven Schmidt
• 金额: $ 100万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-10-01 至 2005-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0084223&HistoricalAwards=false
• 关键词: Microbial; Biogeochemistry; Functional; Diversity; across

Drs. Steven K. Schmidt and Andrew P. Martin have been awarded a grant to establish a microbial observatory to study the distribution and functioning of microorganisms that live in soils of high-elevation tundra and forests of the Rocky Mountains. They will concentrate on microorganisms that are involved in environmentally important processes such as soil nitrogen transformations and methane (natural gas) exchange between soil and the atmosphere. These processes are important because they can contribute to global warming and pollution of drinking water down stream from high mountain areas. Emphasis will be placed on studying the microbes that carry out these functions during the winter under deep snow packs of the Rocky Mountain region. Their preliminary work shows that soils under deep snow are actually very biologically active and that important environmental transformations of nitrogen and methane take place under the snow. Almost nothing is known, however, about the identity of the cold-adapted organisms that carry out these processes under the snow pack. Drs. Schmidt and Martin will measure the production and consumption of various nitrogen compounds and methane across the landscape during summer and winter. They will simultaneously use DNA sequencing and probing methods to determine the identity of the dominant microorganisms that carry out these important biogeochemical processes.

博士。史蒂文·施密特（Steven K. Schmidt）和安德鲁·马丁（Andrew P. 它们将集中于与环境重要过程有关的微生物，例如土壤氮转化和土壤与大气之间的甲烷（天然气）交换。 这些过程很重要，因为它们可以为来自高山地区的饮用水供水而造成全球变暖和污染。 将重点放在研究冬季在落基山地区深雪包下执行这些功能的微生物。 他们的初步工作表明，深雪下的土壤实际上是非常活跃的，并且在雪下发生了重要的氮和甲烷的环境转化。 然而，几乎一无所知，关于在雪堆下进行这些过程的冷适应生物的身份。 博士。施密特（Schmidt）和马丁（Martin）将在夏季和冬季测量整个景观中各种氮化合物和甲烷的生产和消费。 他们将同时使用DNA测序和探测方法来确定执行这些重要生物地球化学过程的主要微生物的身份。