| 项目编号: | 1501164
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| 项目名称: | DISSERTATION RESEARCH: Metabolic Resource Partitioning: Scaling Microbial Physiology from Individual Activity to Ecosystem Function |
| 作者: | Jay Lennon
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| 承担单位: | Indiana University
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD19004
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | resource
; physiology
; diversity
; microbial metabolic activity
; resource specialization
; function
; research project
; ecosystem function
; ecosystem functioning
; microbial activity
; metabolic activity
; important earth ecosystem
; microbial specialist
; resource transformation
; microbial diversity
; isotope-labeled resource tracking
|
| 英文摘要: | Human impacts have altered the movement of resources within and across landscapes. Resources drive population dynamics, mediate ecological interactions, and are the currency governing elemental cycles such as the carbon cycle. For the most part, these cycles are controlled by microorgranisms. This project focuses on the physiology and diversity of aquatic microorganisms that use terrestrially-derived dissolved organic carbon, which over the past 30 years has been increasing in concentration in lakes and streams, causing them to turn brown. Not only is this "browning" unpleasant to look at, it represents a major change in the function of critically important earth ecosystems.
The overarching goals of this research project are to link the diversity, physiology, and metabolic capacity of microorganisms to resource transformations in the environment. These goals will be addressed by focusing on resource specialization within communities, the abundance and activity of microbial specialists, and how they affect ecosystem functions. The proposed research project will achieve these goals by linking the diversity and physiology of specialized microorganisms to ecosystem functioning, specifically the carbon cycle. To accomplish this, the project will address the following questions: 1) How does variation in microbial metabolic activity influence the transformation rate and the fate of resources? 2) Do microbial diversity and metabolic activity provide insight into resource specialization and the transformation of resources? The project will use a combination of isotope-labeled resource tracking and single-cell approaches to understanding microbial metabolic activity and diversity. These techniques provide increased ability to track resources, such as terrestrially dissolved organic carbon, and to understand the physiology and diversity of specialized microorganisms. As such, the proposed project addresses how microbial activity, physiology, and diversity relate to ecosystem functions and the fate of resources. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94146
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Jay Lennon. DISSERTATION RESEARCH: Metabolic Resource Partitioning: Scaling Microbial Physiology from Individual Activity to Ecosystem Function. 2014-01-01.
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