Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton
Carbon cycling by Antarctic microbial plankton is poorly understood but it plays a major role in CO2 sequestration in the Southern Ocean. We investigated the summer bacterioplankton community in the largely understudied Weddell Sea, applying Illumina amplicon sequencing, measurements of bacterial pr...
Published in: | Environmental Microbiology |
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Society for Applied Microbiology
2022
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Online Access: | https://oceanrep.geomar.de/id/eprint/56327/ https://oceanrep.geomar.de/id/eprint/56327/7/Environmental%20Microbiology%20-%202022%20-%20Piontek%20-%20Organic%20matter%20availability%20drives%20the%20spatial%20variation%20in%20the%20community.pdf https://doi.org/10.1111/1462-2920.16087 |
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ftoceanrep:oai:oceanrep.geomar.de:56327 2024-02-11T09:56:50+01:00 Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton Piontek, Judith Meeske, Christian Hassenrück, Christiane Engel, Anja Jürgens, Klaus 2022-09 text https://oceanrep.geomar.de/id/eprint/56327/ https://oceanrep.geomar.de/id/eprint/56327/7/Environmental%20Microbiology%20-%202022%20-%20Piontek%20-%20Organic%20matter%20availability%20drives%20the%20spatial%20variation%20in%20the%20community.pdf https://doi.org/10.1111/1462-2920.16087 en eng Society for Applied Microbiology Wiley https://oceanrep.geomar.de/id/eprint/56327/7/Environmental%20Microbiology%20-%202022%20-%20Piontek%20-%20Organic%20matter%20availability%20drives%20the%20spatial%20variation%20in%20the%20community.pdf Piontek, J., Meeske, C., Hassenrück, C., Engel, A. and Jürgens, K. (2022) Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton. Open Access Environmental Microbiology, 24 (9). pp. 4030-4048. DOI 10.1111/1462-2920.16087 <https://doi.org/10.1111/1462-2920.16087>. doi:10.1111/1462-2920.16087 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2022 ftoceanrep https://doi.org/10.1111/1462-2920.16087 2024-01-15T00:25:40Z Carbon cycling by Antarctic microbial plankton is poorly understood but it plays a major role in CO2 sequestration in the Southern Ocean. We investigated the summer bacterioplankton community in the largely understudied Weddell Sea, applying Illumina amplicon sequencing, measurements of bacterial production and chemical analyses of organic matter. The results revealed that the patchy distribution of productive coastal polynyas and less productive, mostly ice-covered sites was the major driver of the spatial changes in the taxonomic composition and activity of bacterioplankton. Gradients in organic matter availability induced by phytoplankton blooms were reflected in the concentrations and composition of dissolved carbohydrates and proteins. Bacterial production at bloom stations was, on average, 2.7 times higher than at less productive sites. Abundant bloom-responsive lineages were predominately affiliated with ubiquitous marine taxa, including Polaribacter, Yoonia-Loktanella, Sulfitobacter, the SAR92 clade, and Ulvibacter, suggesting a widespread genetic potential for adaptation to sub-zero seawater temperatures. A co-occurrence network analysis showed that dominant taxa at stations with low phytoplankton productivity were highly connected, indicating beneficial interactions. Overall, our study demonstrates that heterotrophic bacterial communities along Weddell Sea ice shelves were primarily constrained by the availability of labile organic matter rather than low seawater temperature. Article in Journal/Newspaper Antarc* Antarctic Ice Shelves Sea ice Southern Ocean Weddell Sea OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean Weddell Sea Weddell Environmental Microbiology |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Carbon cycling by Antarctic microbial plankton is poorly understood but it plays a major role in CO2 sequestration in the Southern Ocean. We investigated the summer bacterioplankton community in the largely understudied Weddell Sea, applying Illumina amplicon sequencing, measurements of bacterial production and chemical analyses of organic matter. The results revealed that the patchy distribution of productive coastal polynyas and less productive, mostly ice-covered sites was the major driver of the spatial changes in the taxonomic composition and activity of bacterioplankton. Gradients in organic matter availability induced by phytoplankton blooms were reflected in the concentrations and composition of dissolved carbohydrates and proteins. Bacterial production at bloom stations was, on average, 2.7 times higher than at less productive sites. Abundant bloom-responsive lineages were predominately affiliated with ubiquitous marine taxa, including Polaribacter, Yoonia-Loktanella, Sulfitobacter, the SAR92 clade, and Ulvibacter, suggesting a widespread genetic potential for adaptation to sub-zero seawater temperatures. A co-occurrence network analysis showed that dominant taxa at stations with low phytoplankton productivity were highly connected, indicating beneficial interactions. Overall, our study demonstrates that heterotrophic bacterial communities along Weddell Sea ice shelves were primarily constrained by the availability of labile organic matter rather than low seawater temperature. |
format |
Article in Journal/Newspaper |
author |
Piontek, Judith Meeske, Christian Hassenrück, Christiane Engel, Anja Jürgens, Klaus |
spellingShingle |
Piontek, Judith Meeske, Christian Hassenrück, Christiane Engel, Anja Jürgens, Klaus Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
author_facet |
Piontek, Judith Meeske, Christian Hassenrück, Christiane Engel, Anja Jürgens, Klaus |
author_sort |
Piontek, Judith |
title |
Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
title_short |
Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
title_full |
Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
title_fullStr |
Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
title_full_unstemmed |
Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton |
title_sort |
organic matter availability drives the spatial variation in the community composition and activity of antarctic marine bacterioplankton |
publisher |
Society for Applied Microbiology |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/56327/ https://oceanrep.geomar.de/id/eprint/56327/7/Environmental%20Microbiology%20-%202022%20-%20Piontek%20-%20Organic%20matter%20availability%20drives%20the%20spatial%20variation%20in%20the%20community.pdf https://doi.org/10.1111/1462-2920.16087 |
geographic |
Antarctic Southern Ocean Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea Weddell |
genre |
Antarc* Antarctic Ice Shelves Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Ice Shelves Sea ice Southern Ocean Weddell Sea |
op_relation |
https://oceanrep.geomar.de/id/eprint/56327/7/Environmental%20Microbiology%20-%202022%20-%20Piontek%20-%20Organic%20matter%20availability%20drives%20the%20spatial%20variation%20in%20the%20community.pdf Piontek, J., Meeske, C., Hassenrück, C., Engel, A. and Jürgens, K. (2022) Organic matter availability drives the spatial variation in the community composition and activity of Antarctic marine bacterioplankton. Open Access Environmental Microbiology, 24 (9). pp. 4030-4048. DOI 10.1111/1462-2920.16087 <https://doi.org/10.1111/1462-2920.16087>. doi:10.1111/1462-2920.16087 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/1462-2920.16087 |
container_title |
Environmental Microbiology |
_version_ |
1790606222822473728 |