Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica
Parts of the Antarctic are experiencing dramatic ecosystem change due to rapid and record warming, which may weaken biogeographic boundaries and modify dispersal barriers, increasing the risk of biological invasions. In this study, we collected air samples from 100 locations around the Southern Ocea...
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ftnerc:oai:nora.nerc.ac.uk:533331 2023-05-15T14:02:21+02:00 Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica Malard, Lucie A. Avila-Jimenez, Maria-Luisa Schmale, Julia Cuthbertson, Lewis Cockerton, Luke Pearce, David A. 2022-11 text http://nora.nerc.ac.uk/id/eprint/533331/ https://nora.nerc.ac.uk/id/eprint/533331/1/1-s2.0-S0160412022004196-main.pdf https://www.sciencedirect.com/science/article/pii/S0160412022004196 en eng Elseiver https://nora.nerc.ac.uk/id/eprint/533331/1/1-s2.0-S0160412022004196-main.pdf Malard, Lucie A.; Avila-Jimenez, Maria-Luisa; Schmale, Julia; Cuthbertson, Lewis; Cockerton, Luke; Pearce, David A. orcid:0000-0001-5292-4596 . 2022 Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica. Environment International, 169, 107492. https://doi.org/10.1016/j.envint.2022.107492 <https://doi.org/10.1016/j.envint.2022.107492> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1016/j.envint.2022.107492 2023-02-04T19:53:40Z Parts of the Antarctic are experiencing dramatic ecosystem change due to rapid and record warming, which may weaken biogeographic boundaries and modify dispersal barriers, increasing the risk of biological invasions. In this study, we collected air samples from 100 locations around the Southern Ocean to analyze bacterial biodiversity in the circumpolar air around the Antarctic continent, as understanding dispersal processes is paramount to assessing the risks of microbiological invasions. We also compared the Southern Ocean air bacterial biodiversity to non-polar ecosystems to identify the potential origin of these Southern Ocean air microorganisms. The bacterial diversity in the air had both local and global origins and presented low richness overall but high heterogeneity, compatible with a scenario whereby samples are composed of a suite of different species in very low relative abundances. Only 4% of Amplicon Sequence Variants (ASVs) were identified in both polar and non-polar air masses, suggesting that the polar air mass over the Southern Ocean can act as a selective dispersal filter. Furthermore, both microbial diversity and community structure both varied significantly with meteorological data, suggesting that regional bacterial biodiversity could be sensitive to changes in weather conditions, potentially altering the existing pattern of microbial deposition in the Antarctic. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Environment International 169 107492 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
Parts of the Antarctic are experiencing dramatic ecosystem change due to rapid and record warming, which may weaken biogeographic boundaries and modify dispersal barriers, increasing the risk of biological invasions. In this study, we collected air samples from 100 locations around the Southern Ocean to analyze bacterial biodiversity in the circumpolar air around the Antarctic continent, as understanding dispersal processes is paramount to assessing the risks of microbiological invasions. We also compared the Southern Ocean air bacterial biodiversity to non-polar ecosystems to identify the potential origin of these Southern Ocean air microorganisms. The bacterial diversity in the air had both local and global origins and presented low richness overall but high heterogeneity, compatible with a scenario whereby samples are composed of a suite of different species in very low relative abundances. Only 4% of Amplicon Sequence Variants (ASVs) were identified in both polar and non-polar air masses, suggesting that the polar air mass over the Southern Ocean can act as a selective dispersal filter. Furthermore, both microbial diversity and community structure both varied significantly with meteorological data, suggesting that regional bacterial biodiversity could be sensitive to changes in weather conditions, potentially altering the existing pattern of microbial deposition in the Antarctic. |
format |
Article in Journal/Newspaper |
author |
Malard, Lucie A. Avila-Jimenez, Maria-Luisa Schmale, Julia Cuthbertson, Lewis Cockerton, Luke Pearce, David A. |
spellingShingle |
Malard, Lucie A. Avila-Jimenez, Maria-Luisa Schmale, Julia Cuthbertson, Lewis Cockerton, Luke Pearce, David A. Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
author_facet |
Malard, Lucie A. Avila-Jimenez, Maria-Luisa Schmale, Julia Cuthbertson, Lewis Cockerton, Luke Pearce, David A. |
author_sort |
Malard, Lucie A. |
title |
Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
title_short |
Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
title_full |
Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
title_fullStr |
Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
title_full_unstemmed |
Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
title_sort |
aerobiology over the southern ocean – implications for bacterial colonization of antarctica |
publisher |
Elseiver |
publishDate |
2022 |
url |
http://nora.nerc.ac.uk/id/eprint/533331/ https://nora.nerc.ac.uk/id/eprint/533331/1/1-s2.0-S0160412022004196-main.pdf https://www.sciencedirect.com/science/article/pii/S0160412022004196 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/533331/1/1-s2.0-S0160412022004196-main.pdf Malard, Lucie A.; Avila-Jimenez, Maria-Luisa; Schmale, Julia; Cuthbertson, Lewis; Cockerton, Luke; Pearce, David A. orcid:0000-0001-5292-4596 . 2022 Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica. Environment International, 169, 107492. https://doi.org/10.1016/j.envint.2022.107492 <https://doi.org/10.1016/j.envint.2022.107492> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.envint.2022.107492 |
container_title |
Environment International |
container_volume |
169 |
container_start_page |
107492 |
_version_ |
1766272562391678976 |