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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Published in:Microbial Ecology
Main Authors: Bottos, Eric M., Woo, Anthony C., Zawar-Reza, Peyman, Pointing, Stephen B., Cary, Stephen C.
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2013
Subjects:
Online Access: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
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spelling 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
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