Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources
The Arctic is a hot spot for climate change with potentially large consequences on a global scale. Aerosols, including bioaerosols, are important players in regulating the heat balance through direct interaction with sunlight and indirectly, through inducing cloud formation. Airborne bacteria are th...
Published in: | Frontiers in Microbiology |
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2022
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Online Access: | https://pure.au.dk/portal/da/publications/seasonal-variation-of-the-atmospheric-bacterial-community-in-the-greenlandic-high-arctic-is-influenced-by-weather-events-and-local-and-distant-sources(06b246f1-46ad-4843-9e8e-ffd26df18c39).html https://doi.org/10.3389/fmicb.2022.909980 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/06b246f1-46ad-4843-9e8e-ffd26df18c39 2023-05-15T14:25:34+02:00 Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources Jensen, Lasse Z. Glasius, Marianne Gryning, Sven Erik Massling, Andreas Finster, Kai Santl-Temkiv, Tina 2022-07 https://pure.au.dk/portal/da/publications/seasonal-variation-of-the-atmospheric-bacterial-community-in-the-greenlandic-high-arctic-is-influenced-by-weather-events-and-local-and-distant-sources(06b246f1-46ad-4843-9e8e-ffd26df18c39).html https://doi.org/10.3389/fmicb.2022.909980 eng eng info:eu-repo/semantics/openAccess Jensen , L Z , Glasius , M , Gryning , S E , Massling , A , Finster , K & Santl-Temkiv , T 2022 , ' Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources ' , Frontiers in Microbiology , vol. 13 , 909980 . https://doi.org/10.3389/fmicb.2022.909980 Arctic haze atmospheric bacterial community bioaerosols ice nucleation microbial activity article 2022 ftuniaarhuspubl https://doi.org/10.3389/fmicb.2022.909980 2022-11-23T23:57:02Z The Arctic is a hot spot for climate change with potentially large consequences on a global scale. Aerosols, including bioaerosols, are important players in regulating the heat balance through direct interaction with sunlight and indirectly, through inducing cloud formation. Airborne bacteria are the major bioaerosols with some species producing the most potent ice nucleating compounds known, which are implicated in the formation of ice in clouds. Little is known about the numbers and dynamics of airborne bacteria in the Arctic and even less about their seasonal variability. We collected aerosol samples and wet deposition samples in spring 2015 and summer 2016, at the Villum Research Station in Northeast Greenland. We used amplicon sequencing and qPCR targeting the 16S rRNA genes to assess the quantities and composition of the DNA and cDNA-level bacterial community. We found a clear seasonal variation in the atmospheric bacterial community, which is likely due to variable sources and meteorology. In early spring, the atmospheric bacterial community was dominated by taxa originating from temperate and Subarctic regions and arriving at the sampling site through long-range transport. We observed an efficient washout of the aerosolized bacterial cells during a snowstorm, which was followed by very low concentrations of bacteria in the atmosphere during the consecutive 4 weeks. We suggest that this is because in late spring, the long-range transport ceased, and the local sources which comprised only of ice and snow surfaces were weak resulting in low bacterial concentrations. This was supported by observed changes in the chemical composition of aerosols. In summer, the air bacterial community was confined to local sources such as soil, plant material and melting sea-ice. Aerosolized and deposited Cyanobacteria in spring had a high activity potential, implying their activity in the atmosphere or in surface snow. Overall, we show how the composition of bacterial aerosols in the high Arctic varies on a seasonal scale, ... Article in Journal/Newspaper Arctic Arctic Climate change Greenland greenlandic Sea ice Subarctic Aarhus University: Research Arctic Greenland Frontiers in Microbiology 13 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic haze atmospheric bacterial community bioaerosols ice nucleation microbial activity |
spellingShingle |
Arctic haze atmospheric bacterial community bioaerosols ice nucleation microbial activity Jensen, Lasse Z. Glasius, Marianne Gryning, Sven Erik Massling, Andreas Finster, Kai Santl-Temkiv, Tina Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
topic_facet |
Arctic haze atmospheric bacterial community bioaerosols ice nucleation microbial activity |
description |
The Arctic is a hot spot for climate change with potentially large consequences on a global scale. Aerosols, including bioaerosols, are important players in regulating the heat balance through direct interaction with sunlight and indirectly, through inducing cloud formation. Airborne bacteria are the major bioaerosols with some species producing the most potent ice nucleating compounds known, which are implicated in the formation of ice in clouds. Little is known about the numbers and dynamics of airborne bacteria in the Arctic and even less about their seasonal variability. We collected aerosol samples and wet deposition samples in spring 2015 and summer 2016, at the Villum Research Station in Northeast Greenland. We used amplicon sequencing and qPCR targeting the 16S rRNA genes to assess the quantities and composition of the DNA and cDNA-level bacterial community. We found a clear seasonal variation in the atmospheric bacterial community, which is likely due to variable sources and meteorology. In early spring, the atmospheric bacterial community was dominated by taxa originating from temperate and Subarctic regions and arriving at the sampling site through long-range transport. We observed an efficient washout of the aerosolized bacterial cells during a snowstorm, which was followed by very low concentrations of bacteria in the atmosphere during the consecutive 4 weeks. We suggest that this is because in late spring, the long-range transport ceased, and the local sources which comprised only of ice and snow surfaces were weak resulting in low bacterial concentrations. This was supported by observed changes in the chemical composition of aerosols. In summer, the air bacterial community was confined to local sources such as soil, plant material and melting sea-ice. Aerosolized and deposited Cyanobacteria in spring had a high activity potential, implying their activity in the atmosphere or in surface snow. Overall, we show how the composition of bacterial aerosols in the high Arctic varies on a seasonal scale, ... |
format |
Article in Journal/Newspaper |
author |
Jensen, Lasse Z. Glasius, Marianne Gryning, Sven Erik Massling, Andreas Finster, Kai Santl-Temkiv, Tina |
author_facet |
Jensen, Lasse Z. Glasius, Marianne Gryning, Sven Erik Massling, Andreas Finster, Kai Santl-Temkiv, Tina |
author_sort |
Jensen, Lasse Z. |
title |
Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
title_short |
Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
title_full |
Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
title_fullStr |
Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
title_full_unstemmed |
Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources |
title_sort |
seasonal variation of the atmospheric bacterial community in the greenlandic high arctic is influenced by weather events and local and distant sources |
publishDate |
2022 |
url |
https://pure.au.dk/portal/da/publications/seasonal-variation-of-the-atmospheric-bacterial-community-in-the-greenlandic-high-arctic-is-influenced-by-weather-events-and-local-and-distant-sources(06b246f1-46ad-4843-9e8e-ffd26df18c39).html https://doi.org/10.3389/fmicb.2022.909980 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Climate change Greenland greenlandic Sea ice Subarctic |
genre_facet |
Arctic Arctic Climate change Greenland greenlandic Sea ice Subarctic |
op_source |
Jensen , L Z , Glasius , M , Gryning , S E , Massling , A , Finster , K & Santl-Temkiv , T 2022 , ' Seasonal Variation of the Atmospheric Bacterial Community in the Greenlandic High Arctic Is Influenced by Weather Events and Local and Distant Sources ' , Frontiers in Microbiology , vol. 13 , 909980 . https://doi.org/10.3389/fmicb.2022.909980 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2022.909980 |
container_title |
Frontiers in Microbiology |
container_volume |
13 |
_version_ |
1766298005711880192 |