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Exposure to Airborne Bacteria Depends upon Vertical Stratification and Vegetation Complexity

View ORCID ProfileJake M. Robinson, Christian Cando-Dumancela, View ORCID ProfileRachael E. Antwis, Ross Cameron, View ORCID ProfileCraig Liddicoat, Ravin Poudel, View ORCID ProfilePhilip Weinstein, View ORCID ProfileMartin F. Breed
doi: https://doi.org/10.1101/2020.11.11.377630
Jake M. Robinson
1Department of Landscape Architecture, The University of Sheffield S10 2TN, UK
2inVIVO Planetary Health, of the Worldwide Universities Network, NJ 10704, USA
3College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
4The Healthy Urban Microbiome Initiative (HUMI), Australia
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  • For correspondence: jmrobinson3@sheffield.ac.uk
Christian Cando-Dumancela
3College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
4The Healthy Urban Microbiome Initiative (HUMI), Australia
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Rachael E. Antwis
5School of Science, Engineering and Environment, University of Salford, M5 4WX, UK
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Ross Cameron
1Department of Landscape Architecture, The University of Sheffield S10 2TN, UK
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Craig Liddicoat
3College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
4The Healthy Urban Microbiome Initiative (HUMI), Australia
6School of Public Health and the Environment Institute, University of Adelaide, Adelaide, SA, 5005, Australia
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Ravin Poudel
7Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32603, USA
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Philip Weinstein
4The Healthy Urban Microbiome Initiative (HUMI), Australia
6School of Public Health and the Environment Institute, University of Adelaide, Adelaide, SA, 5005, Australia
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Martin F. Breed
3College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
4The Healthy Urban Microbiome Initiative (HUMI), Australia
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  • ORCID record for Martin F. Breed
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Abstract

Exposure to biodiverse aerobiomes may support human health, but it is unclear which ecological factors influence exposure. Few studies have investigated near-surface green space aerobiome dynamics, and no studies have investigated aerobiome vertical stratification in different green spaces. We used columnar sampling and next generation sequencing of the bacterial 16S rRNA gene, combined with geospatial and network analyses to investigate aerobiome spatio-compositional dynamics. We show a strong effect of habitat on bacterial diversity and network complexity. We observed aerobiome vertical stratification and network complexity that was contingent on habitat type. Tree density, closer proximity, and canopy coverage associated with greater aerobiome alpha diversity. Grassland aerobiomes exhibited greater proportions of putative pathogens compared to scrub, and also stratified vertically. We provide new insights into the urban ecosystem with potential importance for public health, whereby the possibility of differential aerobiome exposures appears to depend on habitat type and height in the airspace.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted November 11, 2020.
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Exposure to Airborne Bacteria Depends upon Vertical Stratification and Vegetation Complexity
Jake M. Robinson, Christian Cando-Dumancela, Rachael E. Antwis, Ross Cameron, Craig Liddicoat, Ravin Poudel, Philip Weinstein, Martin F. Breed
bioRxiv 2020.11.11.377630; doi: https://doi.org/10.1101/2020.11.11.377630
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Exposure to Airborne Bacteria Depends upon Vertical Stratification and Vegetation Complexity
Jake M. Robinson, Christian Cando-Dumancela, Rachael E. Antwis, Ross Cameron, Craig Liddicoat, Ravin Poudel, Philip Weinstein, Martin F. Breed
bioRxiv 2020.11.11.377630; doi: https://doi.org/10.1101/2020.11.11.377630

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