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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Online Access: | https://doi.org/10.1016/j.envint.2022.107492 https://doaj.org/article/75333a107c114193b6ceba153551ce26 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:75333a107c114193b6ceba153551ce26 2023-05-15T14:04:54+02:00 Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica Lucie A. Malard Maria-Luisa Avila-Jimenez Julia Schmale Lewis Cuthbertson Luke Cockerton David A. Pearce 2022-11-01 https://doi.org/10.1016/j.envint.2022.107492 https://doaj.org/article/75333a107c114193b6ceba153551ce26 en eng Elsevier 0160-4120 doi:10.1016/j.envint.2022.107492 https://doaj.org/article/75333a107c114193b6ceba153551ce26 undefined Environment International, Vol 169, Iss , Pp 107492- (2022) Antarctica Aerobiology Dispersal Bacteria Biodiversity Invasion geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.1016/j.envint.2022.107492 2023-01-22T19:12:04Z 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 Unknown Antarctic Southern Ocean The Antarctic Environment International 169 107492 |
institution |
Open Polar |
collection |
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language |
English |
topic |
Antarctica Aerobiology Dispersal Bacteria Biodiversity Invasion geo envir |
spellingShingle |
Antarctica Aerobiology Dispersal Bacteria Biodiversity Invasion geo envir Lucie A. Malard Maria-Luisa Avila-Jimenez Julia Schmale Lewis Cuthbertson Luke Cockerton David A. Pearce Aerobiology over the Southern Ocean – Implications for bacterial colonization of Antarctica |
topic_facet |
Antarctica Aerobiology Dispersal Bacteria Biodiversity Invasion geo envir |
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 |
Lucie A. Malard Maria-Luisa Avila-Jimenez Julia Schmale Lewis Cuthbertson Luke Cockerton David A. Pearce |
author_facet |
Lucie A. Malard Maria-Luisa Avila-Jimenez Julia Schmale Lewis Cuthbertson Luke Cockerton David A. Pearce |
author_sort |
Lucie A. Malard |
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 |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.envint.2022.107492 https://doaj.org/article/75333a107c114193b6ceba153551ce26 |
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_source |
Environment International, Vol 169, Iss , Pp 107492- (2022) |
op_relation |
0160-4120 doi:10.1016/j.envint.2022.107492 https://doaj.org/article/75333a107c114193b6ceba153551ce26 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1016/j.envint.2022.107492 |
container_title |
Environment International |
container_volume |
169 |
container_start_page |
107492 |
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1766276342210363392 |