| DOI: | 10.1002/2014GL062865
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| 论文题名: | Bacteria-driven production of alkyl nitrates in seawater |
| 作者: | Kim M.J.; Michaud J.M.; Williams R.; Sherwood B.P.; Pomeroy R.; Azam F.; Burkart M.; Bertram T.H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9025
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| EISSN: | 1944-8756
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| 出版年: | 2015
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| 卷: | 42, 期:2 | | 起始页码: | 597
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| 结束页码: | 604
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| 语种: | 英语
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| 英文关键词: | air-sea exchange
; bacteria
; reactive nitrogen
; trace gases
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| Scopus关键词: | Bacteria
; Gases
; Nitrates
; Nitrogen
; Nitrogen compounds
; Air-sea exchange
; Chlorophyll-a concentration
; Heterotrophic bacterias
; Low light conditions
; Photochemical production
; Production mechanisms
; Reactive nitrogen
; Trace-gases
; Seawater
; gas phase reaction
; microbial ecology
; nitrate
; photochemistry
; seawater
; solar radiation
; wastewater
; Bacteria (microorganisms)
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| 英文摘要: | Aircraft- and ship-borne measurements have shown that the ocean is a large, diffuse source for short chain (C1-C3) gas phase alkyl nitrates (RONO2). Photochemical production of RONO2 has been demonstrated previously as a viable mechanism in surface waters; however, it cannot account for the observed depth profile of RONO2, suggesting an additional, dark RONO2 production mechanism. We present measurements of gas phase C1-C5 alkyl nitrates emitted from seawater in a controlled mesocosm experiment conducted under low-light conditions in a glass-walled wave channel. Ethyl and butyl nitrate emission rates from seawater are strongly correlated with the abundance of heterotrophic bacteria (R2-≥-0.89) and show no correlation to chlorophyll a concentration. Controlled flask experiments conducted using ambient and sterile seawater, inoculated with a heterotrophic bacterium, confirm that bacterial driven production of select RONO2 can proceed efficiently in the absence of light. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923613560&doi=10.1002%2f2014GL062865&partnerID=40&md5=489119b8d000e407778214fc5e3bff18
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8641
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Scripps Institution of Oceanography, University of California, San Diego, CA, United States
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| Recommended Citation: | |
Kim M.J.,Michaud J.M.,Williams R.,et al. Bacteria-driven production of alkyl nitrates in seawater[J]. Geophysical Research Letters,2015-01-01,42(2).
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