| DOI: | 10.2172/1221415
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| 报告号: | DOE-UCI--04731
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| 报告题名: | Final technical report. Can microbial functional traits predict the response and resilience of decomposition to global change? |
| 作者: | Allison, Steven D.
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| 出版年: | 2015
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| 发表日期: | 2015-09-24
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| 总页数: | 13
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | microbial community
; carbon cycling
; traits
; extracellular enzyme
; global change
|
| 中文主题词: | 碳
; 氮
; 干旱
|
| 主题词: | CARBON
; NITROGEN
; DROUGHT
|
| 英文摘要: | The role of specific micro-organisms in the carbon cycle, and their responses to environmental change, are unknown in most ecosystems. This knowledge gap limits scientistsâ ability to predict how important ecosystem processes, like soil carbon storage and loss, will change with climate and other environmental factors. The investigators addressed this knowledge gap by transplanting microbial communities from different environments into new environments and measuring the response of community composition and carbon cycling over time. Using state-of-the-art sequencing techniques, computational tools, and nanotechnology, the investigators showed that microbial communities on decomposing plant material shift dramatically with natural and experimentally-imposed drought. Microbial communities also shifted in response to added nitrogen, but the effects were smaller. These changes had implications for carbon cycling, with lower rates of carbon loss under drought conditions, and changes in the efficiency of decomposition with nitrogen addition. Even when transplanted into the same conditions, microbial communities from different environments remained distinct in composition and functioning for up to one year. Changes in functioning were related to differences in enzyme gene content across different microbial groups. Computational approaches developed for this project allowed the conclusions to be tested more broadly in other ecosystems, and new computer models will facilitate the prediction of microbial traits and functioning across environments. The data and models resulting from this project benefit the public by improving the ability to predict how microbial communities and carbon cycling functions respond to climate change, nutrient enrichment, and other large-scale environmental changes. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1221415
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41765
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1221415.pdf（352KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Allison, Steven D.. Final technical report. Can microbial functional traits predict the response and resilience of decomposition to global change?. 2015-01-01.
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