Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time
Abstract Submesoscale eddies and fronts are important components of oceanic mixing and energy fluxes. These phenomena occur in the surface ocean for a period of several days, on scales between a few hundred meters and few tens of kilometers. Remote sensing and modeling suggest that eddies and fronts...
Published in: | Limnology and Oceanography |
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crwiley:10.1002/lno.11799 2024-06-23T07:50:12+00:00 Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time Fadeev, Eduard Wietz, Matthias von Appen, Wilken‐Jon Iversen, Morten H. Nöthig, Eva‐Maria Engel, Anja Grosse, Julia Graeve, Martin Boetius, Antje Austrian Science Fund Bundesministerium für Bildung und Forschung FP7 Ideas: European Research Council Helmholtz Association Max-Planck-Gesellschaft 2021 http://dx.doi.org/10.1002/lno.11799 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11799 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11799 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11799 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Limnology and Oceanography volume 66, issue 7, page 2901-2913 ISSN 0024-3590 1939-5590 journal-article 2021 crwiley https://doi.org/10.1002/lno.11799 2024-06-13T04:24:18Z Abstract Submesoscale eddies and fronts are important components of oceanic mixing and energy fluxes. These phenomena occur in the surface ocean for a period of several days, on scales between a few hundred meters and few tens of kilometers. Remote sensing and modeling suggest that eddies and fronts may influence marine ecosystem dynamics, but their limited temporal and spatial scales make them challenging for observation and in situ sampling. Here, the study of a submesoscale filament in summerly Arctic waters (depth 0–400 m) revealed enhanced mixing of Polar and Atlantic water masses, resulting in a ca. 4 km wide and ca. 50 km long filament with distinct physical and biogeochemical characteristics. Compared to the surrounding waters, the filament was characterized by a distinct phytoplankton bloom, associated with depleted inorganic nutrients, elevated chlorophyll a concentrations, as well as twofold higher phyto‐ and bacterioplankton cell abundances. High‐throughput 16S rRNA gene sequencing of bacterioplankton communities revealed enrichment of typical phytoplankton bloom‐associated taxonomic groups (e.g., Flavobacteriales ) inside the filament. Furthermore, linked to the strong water subduction, the vertical export of organic matter to 400 m depth inside the filament was twofold higher compared to the surrounding waters. Altogether, our results show that physical submesoscale mixing can shape distinct biogeochemical conditions and microbial communities within a few kilometers of the ocean. Hence, the role of submesoscale features in polar waters for surface ocean biodiversity and biogeochemical processes need further investigation, especially with regard to the fate of sea ice in the warming Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Sea ice Wiley Online Library Arctic Arctic Ocean Limnology and Oceanography 66 7 2901 2913 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Submesoscale eddies and fronts are important components of oceanic mixing and energy fluxes. These phenomena occur in the surface ocean for a period of several days, on scales between a few hundred meters and few tens of kilometers. Remote sensing and modeling suggest that eddies and fronts may influence marine ecosystem dynamics, but their limited temporal and spatial scales make them challenging for observation and in situ sampling. Here, the study of a submesoscale filament in summerly Arctic waters (depth 0–400 m) revealed enhanced mixing of Polar and Atlantic water masses, resulting in a ca. 4 km wide and ca. 50 km long filament with distinct physical and biogeochemical characteristics. Compared to the surrounding waters, the filament was characterized by a distinct phytoplankton bloom, associated with depleted inorganic nutrients, elevated chlorophyll a concentrations, as well as twofold higher phyto‐ and bacterioplankton cell abundances. High‐throughput 16S rRNA gene sequencing of bacterioplankton communities revealed enrichment of typical phytoplankton bloom‐associated taxonomic groups (e.g., Flavobacteriales ) inside the filament. Furthermore, linked to the strong water subduction, the vertical export of organic matter to 400 m depth inside the filament was twofold higher compared to the surrounding waters. Altogether, our results show that physical submesoscale mixing can shape distinct biogeochemical conditions and microbial communities within a few kilometers of the ocean. Hence, the role of submesoscale features in polar waters for surface ocean biodiversity and biogeochemical processes need further investigation, especially with regard to the fate of sea ice in the warming Arctic Ocean. |
author2 |
Austrian Science Fund Bundesministerium für Bildung und Forschung FP7 Ideas: European Research Council Helmholtz Association Max-Planck-Gesellschaft |
format |
Article in Journal/Newspaper |
author |
Fadeev, Eduard Wietz, Matthias von Appen, Wilken‐Jon Iversen, Morten H. Nöthig, Eva‐Maria Engel, Anja Grosse, Julia Graeve, Martin Boetius, Antje |
spellingShingle |
Fadeev, Eduard Wietz, Matthias von Appen, Wilken‐Jon Iversen, Morten H. Nöthig, Eva‐Maria Engel, Anja Grosse, Julia Graeve, Martin Boetius, Antje Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
author_facet |
Fadeev, Eduard Wietz, Matthias von Appen, Wilken‐Jon Iversen, Morten H. Nöthig, Eva‐Maria Engel, Anja Grosse, Julia Graeve, Martin Boetius, Antje |
author_sort |
Fadeev, Eduard |
title |
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
title_short |
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
title_full |
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
title_fullStr |
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
title_full_unstemmed |
Submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
title_sort |
submesoscale physicochemical dynamics directly shape bacterioplankton community structure in space and time |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/lno.11799 https://onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11799 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/lno.11799 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11799 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Phytoplankton Sea ice |
op_source |
Limnology and Oceanography volume 66, issue 7, page 2901-2913 ISSN 0024-3590 1939-5590 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/lno.11799 |
container_title |
Limnology and Oceanography |
container_volume |
66 |
container_issue |
7 |
container_start_page |
2901 |
op_container_end_page |
2913 |
_version_ |
1802641081747111936 |