How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments
In the Arctic, seasonal changes are substantial, and as a result, the marine bacterial community composition and functions differ greatly between the dark winter and light-intensive summer. While light availability is, overall, the external driver of the seasonal changes, several internal biological...
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Online Access: | https://hdl.handle.net/11250/2834128 https://doi.org/10.3390/microorganisms9112378 |
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ftnorce:oai:norceresearch.brage.unit.no:11250/2834128 2023-05-15T14:50:49+02:00 How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments Müller, Oliver Seuthe, Lena Pree, Bernadette Bratbak, Gunnar Larsen, Aud Paulsen, Maria Lund 2021 application/pdf https://hdl.handle.net/11250/2834128 https://doi.org/10.3390/microorganisms9112378 eng eng Norges forskningsråd: 276730 Norges forskningsråd: 280292 Norges forskningsråd: 280414 Norges forskningsråd: 225956 Norges forskningsråd: 226415 Microorganisms. 2021, 9 (11), 1-21. urn:issn:2076-2607 https://hdl.handle.net/11250/2834128 https://doi.org/10.3390/microorganisms9112378 cristin:1959920 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021, the authors CC-BY Microorganisms 9 11 1-21 Journal article Peer reviewed 2021 ftnorce https://doi.org/10.3390/microorganisms9112378 2022-10-13T05:50:47Z In the Arctic, seasonal changes are substantial, and as a result, the marine bacterial community composition and functions differ greatly between the dark winter and light-intensive summer. While light availability is, overall, the external driver of the seasonal changes, several internal biological interactions structure the bacterial community during shorter timescales. These include specific phytoplankton–bacteria associations, viral infections and other top-down controls. Here, we uncover these microbial interactions and their effects on the bacterial community composition during a full annual cycle by manipulating the microbial food web using size fractionation. The most profound community changes were detected during the spring, with ‘mutualistic phytoplankton’—Gammaproteobacteria interactions dominating in the pre-bloom phase and ‘substrate-dependent phytoplankton’—Flavobacteria interactions during blooming conditions. Bacterivores had an overall limited effect on the bacterial community composition most of the year. However, in the late summer, grazing was the main factor shaping the community composition and transferring carbon to higher trophic levels. Identifying these small-scale interactions improves our understanding of the Arctic marine microbial food web and its dynamics. publishedVersion Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton NORCE vitenarkiv (Norwegian Research Centre) Arctic Arctic Ocean Microorganisms 9 11 2378 |
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Open Polar |
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NORCE vitenarkiv (Norwegian Research Centre) |
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ftnorce |
language |
English |
description |
In the Arctic, seasonal changes are substantial, and as a result, the marine bacterial community composition and functions differ greatly between the dark winter and light-intensive summer. While light availability is, overall, the external driver of the seasonal changes, several internal biological interactions structure the bacterial community during shorter timescales. These include specific phytoplankton–bacteria associations, viral infections and other top-down controls. Here, we uncover these microbial interactions and their effects on the bacterial community composition during a full annual cycle by manipulating the microbial food web using size fractionation. The most profound community changes were detected during the spring, with ‘mutualistic phytoplankton’—Gammaproteobacteria interactions dominating in the pre-bloom phase and ‘substrate-dependent phytoplankton’—Flavobacteria interactions during blooming conditions. Bacterivores had an overall limited effect on the bacterial community composition most of the year. However, in the late summer, grazing was the main factor shaping the community composition and transferring carbon to higher trophic levels. Identifying these small-scale interactions improves our understanding of the Arctic marine microbial food web and its dynamics. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Müller, Oliver Seuthe, Lena Pree, Bernadette Bratbak, Gunnar Larsen, Aud Paulsen, Maria Lund |
spellingShingle |
Müller, Oliver Seuthe, Lena Pree, Bernadette Bratbak, Gunnar Larsen, Aud Paulsen, Maria Lund How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
author_facet |
Müller, Oliver Seuthe, Lena Pree, Bernadette Bratbak, Gunnar Larsen, Aud Paulsen, Maria Lund |
author_sort |
Müller, Oliver |
title |
How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
title_short |
How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
title_full |
How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
title_fullStr |
How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
title_full_unstemmed |
How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
title_sort |
how microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/2834128 https://doi.org/10.3390/microorganisms9112378 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Ocean Phytoplankton |
op_source |
Microorganisms 9 11 1-21 |
op_relation |
Norges forskningsråd: 276730 Norges forskningsråd: 280292 Norges forskningsråd: 280414 Norges forskningsråd: 225956 Norges forskningsråd: 226415 Microorganisms. 2021, 9 (11), 1-21. urn:issn:2076-2607 https://hdl.handle.net/11250/2834128 https://doi.org/10.3390/microorganisms9112378 cristin:1959920 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021, the authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/microorganisms9112378 |
container_title |
Microorganisms |
container_volume |
9 |
container_issue |
11 |
container_start_page |
2378 |
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1766321867479580672 |