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 sum-mer. While light availability is, overall, the external driver of the seasonal changes, several internal biologica...
Published in: | Microorganisms |
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2021
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Online Access: | https://pure.au.dk/portal/da/publications/how-microbial-food-web-interactions-shape-the-arctic-ocean-bacterial-community-revealed-by-size-fractionation-experiments(bf1991bd-15ed-481c-b5f2-1ba60e476819).html https://doi.org/10.3390/microorganisms9112378 http://www.scopus.com/inward/record.url?scp=85119058557&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/bf1991bd-15ed-481c-b5f2-1ba60e476819 2023-05-15T14:24:39+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 2021-11 https://pure.au.dk/portal/da/publications/how-microbial-food-web-interactions-shape-the-arctic-ocean-bacterial-community-revealed-by-size-fractionation-experiments(bf1991bd-15ed-481c-b5f2-1ba60e476819).html https://doi.org/10.3390/microorganisms9112378 http://www.scopus.com/inward/record.url?scp=85119058557&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Müller , O , Seuthe , L , Pree , B , Bratbak , G , Larsen , A & Paulsen , M L 2021 , ' How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments ' , Microorganisms , vol. 9 , no. 11 , 2378 . https://doi.org/10.3390/microorganisms9112378 Arctic Ocean Bacterial community structure Experimental manipulations Microbial food web Microbial resilience Phytoplankton–bacteria association Seasonal changes Trophic interactions article 2021 ftuniaarhuspubl https://doi.org/10.3390/microorganisms9112378 2023-01-18T23:56:45Z 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 sum-mer. 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 phytoplank-ton’—Gammaproteobacteria interactions dominating in the pre‐bloom phase and ‘substrate‐de-pendent 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 understand-ing of the Arctic marine microbial food web and its dynamics. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Phytoplankton Aarhus University: Research Arctic Arctic Ocean Microorganisms 9 11 2378 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic Ocean Bacterial community structure Experimental manipulations Microbial food web Microbial resilience Phytoplankton–bacteria association Seasonal changes Trophic interactions |
spellingShingle |
Arctic Ocean Bacterial community structure Experimental manipulations Microbial food web Microbial resilience Phytoplankton–bacteria association Seasonal changes Trophic interactions 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 |
topic_facet |
Arctic Ocean Bacterial community structure Experimental manipulations Microbial food web Microbial resilience Phytoplankton–bacteria association Seasonal changes Trophic interactions |
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 sum-mer. 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 phytoplank-ton’—Gammaproteobacteria interactions dominating in the pre‐bloom phase and ‘substrate‐de-pendent 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 understand-ing of the Arctic marine microbial food web and its dynamics. |
format |
Article in Journal/Newspaper |
author |
Müller, Oliver Seuthe, Lena Pree, Bernadette Bratbak, Gunnar Larsen, Aud Paulsen, Maria Lund |
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://pure.au.dk/portal/da/publications/how-microbial-food-web-interactions-shape-the-arctic-ocean-bacterial-community-revealed-by-size-fractionation-experiments(bf1991bd-15ed-481c-b5f2-1ba60e476819).html https://doi.org/10.3390/microorganisms9112378 http://www.scopus.com/inward/record.url?scp=85119058557&partnerID=8YFLogxK |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Phytoplankton |
genre_facet |
Arctic Arctic Arctic Ocean Phytoplankton |
op_source |
Müller , O , Seuthe , L , Pree , B , Bratbak , G , Larsen , A & Paulsen , M L 2021 , ' How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments ' , Microorganisms , vol. 9 , no. 11 , 2378 . https://doi.org/10.3390/microorganisms9112378 |
op_rights |
info:eu-repo/semantics/openAccess |
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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1766297085133455360 |