Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 9814972 |
| Collaborative Research: Microbial Life within the Extreme Environment Posed by Permanent Antarctic Lake Ice | |
| Christian Fritsen | |
| 主持机构 | Nevada System of Higher Education, Desert Research Institute |
| 开始日期 | 1998-08-15 |
| 结束日期 | 2003-07-31 |
| 资助经费 | 250743(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | 9814972 FRITSEN Three to twenty meter thick permanent ice covers on lakes in the McMurdo Dry Valleys, Antarctic contain viable microbial cells in association wit sediment aggregates. These aggregates are now recognized as sites where physical, chemical and biological interactions promote microbial growth under extreme conditions inherent to the ice environment. This interdisciplinary research program will define specific processes which allow (1) the creation of liquid water (the essential element for life) in the permanent ice, (2) the survival and structuring of microbial populations subjected to freezing and thawing, (3) the production of substances which alter the physical attributes of the ice crystal habitat and (4) nutrient supply to the microbial populations which is essential for not only survival, but net microbial growth and biomass accumulation. The work will be on ice aggregates embedded within the permanent ice covers on the lakes in the Taylor Valley, which have been tentatively characterized in previous studies. Research on microbes in permanent ice provides information on the ecology of microbes in ice ecosystems and promises to have biotechnological implications. Furthermore, these studies will provide insights into the conditions, which support or have supported life beyond our own planet in association with water ice which is currently present within and beyond our own solar system. |
| 来源学科分类 | Geosciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=9814972 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/342164 |
| 推荐引用方式 GB/T 7714 | Christian Fritsen.Collaborative Research: Microbial Life within the Extreme Environment Posed by Permanent Antarctic Lake Ice.1998. |
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