Arid
DOI10.1016/j.scitotenv.2014.04.030
Structure, inter-annual recurrence, and global-scale connectivity of airborne microbial communities
Barberan, Albert1; Henley, Jessica2; Fierer, Noah2,3; Casamayor, Emilio O.1
通讯作者Casamayor, Emilio O.
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2014
卷号487页码:187-195
英文摘要

Dust coming from the large deserts on Earth, such as the Sahara, can travel long distances and be dispersed over thousands of square kilometers. Remote dust deposition rates are increasing as a consequence of global change and may represent a mechanism for intercontinental microbial dispersal. Remote oligotrophic alpine lakes are particularly sensitive to dust inputs and can serve as sentinels of airborne microbial transport and the ecological consequences of accelerated intercontinental microbial migration. In this study, we applied high-throughput sequencing techniques (16S rRNA amplicon pyrosequencing) to characterize the microbial communities of atmospheric deposition collected in the Central Pyrenees (NE Spain) along three years. Additionally, bacteria from soils in Mauritania and from the air-water interface of high altitude Pyrenean lakes were also examined. Communities in aerosol deposition varied in time with a strong seasonal component of interannual similarity. Communities from the same season tended to resemble more each other than those from different seasons. Samples from disparate dates, in turn, slightly tended to have more dissimilar microbial assemblages (i.e., temporal distance decay), overall suggesting that atmospheric deposition may influence sink habitats in a temporally predictable manner. The three habitats examined (soil, deposition, and air-water interface) harbored distinct microbial communities, although airborne samples collected in the Pyrenees during Saharan dust outbreaks were closer to Mauritian soil samples than those collected during no Saharan dust episodes. The three habitats shared c.a. 1.4% of the total number of microbial sequences in the dataset Such successful immigrants were spread in different bacterial classes. Overall, this study suggests that local and regional features may generate global trends in the dynamics and distribution of airborne microbial assemblages, and that the diversity of viable cells in the high atmosphere is likely higher than previously expected. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Aerosols Saharan dust outbreaks Airborne bacteria Temporal pattern 16S rRNA gene Diversity
类型Article
语种英语
国家Spain ; USA
收录类别SCI-E
WOS记录号WOS:000337259100022
WOS关键词HIGH-MOUNTAIN LAKES ; BACTERIAL COMMUNITIES ; MEDITERRANEAN REGION ; ATMOSPHERIC INPUTS ; ALPINE LAKES ; DESERT DUST ; DIVERSITY ; TRANSPORT ; VARIABILITY ; POPULATIONS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184875
作者单位1.CSIC, CEAB, Dept Continental Ecol, Biogeodynam & Biodivers Grp, Blanes, Spain;
2.Univ CO, Cooperat Inst Res Environm Sci, Boulder, CO USA;
3.Univ CO, Dept Ecol & Evolutionary Biol, Boulder, CO USA
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GB/T 7714
Barberan, Albert,Henley, Jessica,Fierer, Noah,et al. Structure, inter-annual recurrence, and global-scale connectivity of airborne microbial communities[J],2014,487:187-195.
APA Barberan, Albert,Henley, Jessica,Fierer, Noah,&Casamayor, Emilio O..(2014).Structure, inter-annual recurrence, and global-scale connectivity of airborne microbial communities.SCIENCE OF THE TOTAL ENVIRONMENT,487,187-195.
MLA Barberan, Albert,et al."Structure, inter-annual recurrence, and global-scale connectivity of airborne microbial communities".SCIENCE OF THE TOTAL ENVIRONMENT 487(2014):187-195.
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