Airborne Bacterial Populations Above Desert Soils of the McMurdo Dry Valleys, Antarctica
Abstract 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 terrestria...
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2013
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crspringernat:10.1007/s00248-013-0296-y 2023-05-15T14:05:35+02:00 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, Stephen C. 2013 http://dx.doi.org/10.1007/s00248-013-0296-y https://link.springer.com/content/pdf/10.1007/s00248-013-0296-y.pdf https://link.springer.com/article/10.1007/s00248-013-0296-y/fulltext.html http://link.springer.com/content/pdf/10.1007/s00248-013-0296-y en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/2.0 https://creativecommons.org/licenses/by/2.0 CC-BY Microbial Ecology volume 67, issue 1, page 120-128 ISSN 0095-3628 1432-184X Soil Science Ecology Ecology, Evolution, Behavior and Systematics journal-article 2013 crspringernat https://doi.org/10.1007/s00248-013-0296-y 2022-01-04T15:15:41Z Abstract 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 Springer Nature (via Crossref) Antarctic Austral McMurdo Dry Valleys The Antarctic Microbial Ecology 67 1 120 128 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Soil Science Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Soil Science Ecology Ecology, Evolution, Behavior and Systematics Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, Stephen C. Airborne Bacterial Populations Above Desert Soils of the McMurdo Dry Valleys, Antarctica |
topic_facet |
Soil Science Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract 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, Stephen C. |
author_facet |
Bottos, Eric M. Woo, Anthony C. Zawar-Reza, Peyman Pointing, Stephen B. Cary, Stephen C. |
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 Science and Business Media LLC |
publishDate |
2013 |
url |
http://dx.doi.org/10.1007/s00248-013-0296-y https://link.springer.com/content/pdf/10.1007/s00248-013-0296-y.pdf https://link.springer.com/article/10.1007/s00248-013-0296-y/fulltext.html http://link.springer.com/content/pdf/10.1007/s00248-013-0296-y |
geographic |
Antarctic Austral McMurdo Dry Valleys The Antarctic |
geographic_facet |
Antarctic Austral McMurdo Dry Valleys The Antarctic |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_source |
Microbial Ecology volume 67, issue 1, page 120-128 ISSN 0095-3628 1432-184X |
op_rights |
https://creativecommons.org/licenses/by/2.0 https://creativecommons.org/licenses/by/2.0 |
op_rightsnorm |
CC-BY |
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_ |
1766277517737459712 |