DOI: 10.1002/2015GL066898
论文题名: Contribution of airborne microbes to bacterial production and N2 fixation in seawater upon aerosol deposition
作者: Rahav E. ; Ovadia G. ; Paytan A. ; Herut B.
刊名: Geophysical Research Letters
ISSN: 0094-9436
EISSN: 1944-9167
出版年: 2016
卷: 43, 期: 2 起始页码: 719
结束页码: 727
语种: 英语
英文关键词: aerosol deposition
; airborne bacteria
; bacterial production
; dust deposition
; Mediterranean Sea
; N2 fixation
Scopus关键词: Aerosols
; Bioassay
; Deposition
; Dust
; Microorganisms
; Respiratory mechanics
; Aerosol deposition
; Airborne bacteria
; Bacterial production
; Dust deposition
; Mediterranean sea
; Bacteria
; abundance
; aerosol
; atmospheric deposition
; bacterium
; community composition
; dust
; marine environment
; microbial community
; nitrogen fixation
; oligotrophic environment
; seawater
; Mediterranean Sea
; Bacteria (microorganisms)
英文摘要: Aerosol deposition may supply a high diversity of airborne microbes, which can affect surface microbial composition and biological production. This study reports a diverse microbial community associated with dust and other aerosol particles, which differed significantly according to their geographical air mass origin. Microcosm bioassay experiments, in which aerosols were added to sterile (0.2 μm filtered and autoclaved) SE Mediterranean Sea (SEMS) water, were performed to assess the potential impact of airborne bacteria on bacterial abundance, production, and N2 fixation. Significant increase was observed in all parameters within a few hours, and calculations suggest that airborne microbes can account for one third in bacterial abundance and 50-100% in bacterial production and N2-fixation rates following dust/aerosol amendments in the surface SEMS. We show that dust/aerosol deposition can be a potential source of a wide array of microorganisms, which may impact microbial composition and food web dynamics in oligotrophic marine systems such as the SEMS. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961285623&doi=10.1002%2f2015GL066898&partnerID=40&md5=0e0d9c600253ea15155e721b3746a4f2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10399
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: Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa, Israel
Recommended Citation:
Rahav E.,Ovadia G.,Paytan A.,et al. Contribution of airborne microbes to bacterial production and N2 fixation in seawater upon aerosol deposition[J]. Geophysical Research Letters,2016-01-01,43(2).