Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica
Bacteria are assumed to disperse widely via aerosolized transport due to their small size and resilience. The question of microbial endemicity in isolated populations is directly related to the level of airborne exogenous inputs, yet this has proven hard to identify. The ice-free terrestrial ecosyst...
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ftunivwaikato:oai:researchcommons.waikato.ac.nz:10289/8549 2024-02-04T09:56:01+01:00 Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, S. Craig United States 2014-01 application/pdf https://hdl.handle.net/10289/8549 https://doi.org/10.1007/s00248-013-0296-y en eng Springer Microbial Ecology Bottos, E. M., Woo, A. C., Zawar-Reza, P., Pointing, S. B., & Cary, S. C. (2014). Airborne Bacterial Populations Above Desert Soils of the McMurdo Dry Valleys, Antarctica. Microb Ecol, 67(1), 120-128. https://hdl.handle.net/10289/8549 doi:10.1007/s00248-013-0296-y This article is published under Creative Commons Attribution licenses. Antarctica bacterial Journal Article 2014 ftunivwaikato https://doi.org/10.1007/s00248-013-0296-y 2024-01-09T18:25:32Z Bacteria are assumed to disperse widely via aerosolized transport due to their small size and resilience. The question of microbial endemicity in isolated populations is directly related to the level of airborne exogenous inputs, yet this has proven hard to identify. The ice-free terrestrial ecosystem of Antarctica, a geographically and climatically isolated continent, was used to interrogate microbial bio-aerosols in relation to the surrounding ecology and climate. High-throughput sequencing of bacterial ribosomal RNA (rRNA) genes was combined with analyses of climate patterns during an austral summer. In general terms, the aerosols were dominated by Firmicutes, whereas surrounding soils supported Actinobacteria-dominated communities. The most abundant taxa were also common to aerosols from other continents, suggesting that a distinct bio-aerosol community is widely dispersed. No evidence for significant marine input to bio-aerosols was found at this maritime valley site, instead local influence was largely from nearby volcanic sources. Back trajectory analysis revealed transport of incoming regional air masses across the Antarctic Plateau, and this is envisaged as a strong selective force. It is postulated that local soil microbial dispersal occurs largely via stochastic mobilization of mineral soil particulates. Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys The University of Waikato: Research Commons Antarctic The Antarctic Austral McMurdo Dry Valleys Microbial Ecology 67 1 120 128 |
institution |
Open Polar |
collection |
The University of Waikato: Research Commons |
op_collection_id |
ftunivwaikato |
language |
English |
topic |
Antarctica bacterial |
spellingShingle |
Antarctica bacterial Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, S. Craig Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
topic_facet |
Antarctica bacterial |
description |
Bacteria are assumed to disperse widely via aerosolized transport due to their small size and resilience. The question of microbial endemicity in isolated populations is directly related to the level of airborne exogenous inputs, yet this has proven hard to identify. The ice-free terrestrial ecosystem of Antarctica, a geographically and climatically isolated continent, was used to interrogate microbial bio-aerosols in relation to the surrounding ecology and climate. High-throughput sequencing of bacterial ribosomal RNA (rRNA) genes was combined with analyses of climate patterns during an austral summer. In general terms, the aerosols were dominated by Firmicutes, whereas surrounding soils supported Actinobacteria-dominated communities. The most abundant taxa were also common to aerosols from other continents, suggesting that a distinct bio-aerosol community is widely dispersed. No evidence for significant marine input to bio-aerosols was found at this maritime valley site, instead local influence was largely from nearby volcanic sources. Back trajectory analysis revealed transport of incoming regional air masses across the Antarctic Plateau, and this is envisaged as a strong selective force. It is postulated that local soil microbial dispersal occurs largely via stochastic mobilization of mineral soil particulates. |
format |
Article in Journal/Newspaper |
author |
Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, S. Craig |
author_facet |
Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, S. Craig |
author_sort |
Bottos, Eric M. |
title |
Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
title_short |
Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
title_full |
Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
title_fullStr |
Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
title_full_unstemmed |
Airborne bacterial populations above desert soils of the McMurdo Dry Valleys, Antarctica |
title_sort |
airborne bacterial populations above desert soils of the mcmurdo dry valleys, antarctica |
publisher |
Springer |
publishDate |
2014 |
url |
https://hdl.handle.net/10289/8549 https://doi.org/10.1007/s00248-013-0296-y |
op_coverage |
United States |
geographic |
Antarctic The Antarctic Austral McMurdo Dry Valleys |
geographic_facet |
Antarctic The Antarctic Austral McMurdo Dry Valleys |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
Microbial Ecology Bottos, E. M., Woo, A. C., Zawar-Reza, P., Pointing, S. B., & Cary, S. C. (2014). Airborne Bacterial Populations Above Desert Soils of the McMurdo Dry Valleys, Antarctica. Microb Ecol, 67(1), 120-128. https://hdl.handle.net/10289/8549 doi:10.1007/s00248-013-0296-y |
op_rights |
This article is published under Creative Commons Attribution licenses. |
op_doi |
https://doi.org/10.1007/s00248-013-0296-y |
container_title |
Microbial Ecology |
container_volume |
67 |
container_issue |
1 |
container_start_page |
120 |
op_container_end_page |
128 |
_version_ |
1789960336111042560 |