A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels
The North Water region, between Greenland and Ellesmere Island, with high populations of marine birds and mammals, is an Arctic icon. Due to climate related changes, seasonal patterns in water column primary production are changing but the implications for the planktonic microbial eukaryote communit...
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ftpubmed:oai:pubmedcentral.nih.gov:8052464 2023-05-15T14:46:35+02:00 A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels Freyria, Nastasia J. Joli, Nathalie Lovejoy, Connie 2021-04-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8052464/ http://www.ncbi.nlm.nih.gov/pubmed/33863972 https://doi.org/10.1038/s41598-021-87906-4 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8052464/ http://www.ncbi.nlm.nih.gov/pubmed/33863972 http://dx.doi.org/10.1038/s41598-021-87906-4 © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2021 ftpubmed https://doi.org/10.1038/s41598-021-87906-4 2021-04-25T00:32:01Z The North Water region, between Greenland and Ellesmere Island, with high populations of marine birds and mammals, is an Arctic icon. Due to climate related changes, seasonal patterns in water column primary production are changing but the implications for the planktonic microbial eukaryote communities that support the ecosystem are unknown. Here we report microbial community phenology in samples collected over 12 years (2005–2018) from July to October and analysed using high throughput 18S rRNA V4 amplicon sequencing. Community composition was tied to seasonality with summer communities more variable than distinct October communities. In summer, sentinel pan-Arctic species, including a diatom in the Chaetoceros socialis-gelidus complex and the picochlorophyte Micromonas polaris dominated phytoplankton and were summer specialists. In autumn, uncultured undescribed open water dinoflagellates were favored, and their ubiquity suggests they are sentinels of arctic autumn conditions. Despite the input of nutrients into surface waters, autumn chlorophyll concentrations remained low, refuting projected scenarios that longer ice-free seasons are synonymous with high autumn production and a diatom dominated bloom. Overall, the summer sentinel microbial taxa are persisting, and a subset oceanic dinoflagellate should be monitored for possible ecosystem shifts as later autumn ice formation becomes prevalent elsewhere. Text Arctic Arctic Ocean Ellesmere Island Greenland Phytoplankton PubMed Central (PMC) Arctic Arctic Ocean Ellesmere Island Greenland Scientific Reports 11 1 |
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Article Freyria, Nastasia J. Joli, Nathalie Lovejoy, Connie A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
topic_facet |
Article |
description |
The North Water region, between Greenland and Ellesmere Island, with high populations of marine birds and mammals, is an Arctic icon. Due to climate related changes, seasonal patterns in water column primary production are changing but the implications for the planktonic microbial eukaryote communities that support the ecosystem are unknown. Here we report microbial community phenology in samples collected over 12 years (2005–2018) from July to October and analysed using high throughput 18S rRNA V4 amplicon sequencing. Community composition was tied to seasonality with summer communities more variable than distinct October communities. In summer, sentinel pan-Arctic species, including a diatom in the Chaetoceros socialis-gelidus complex and the picochlorophyte Micromonas polaris dominated phytoplankton and were summer specialists. In autumn, uncultured undescribed open water dinoflagellates were favored, and their ubiquity suggests they are sentinels of arctic autumn conditions. Despite the input of nutrients into surface waters, autumn chlorophyll concentrations remained low, refuting projected scenarios that longer ice-free seasons are synonymous with high autumn production and a diatom dominated bloom. Overall, the summer sentinel microbial taxa are persisting, and a subset oceanic dinoflagellate should be monitored for possible ecosystem shifts as later autumn ice formation becomes prevalent elsewhere. |
format |
Text |
author |
Freyria, Nastasia J. Joli, Nathalie Lovejoy, Connie |
author_facet |
Freyria, Nastasia J. Joli, Nathalie Lovejoy, Connie |
author_sort |
Freyria, Nastasia J. |
title |
A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
title_short |
A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
title_full |
A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
title_fullStr |
A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
title_full_unstemmed |
A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
title_sort |
decadal perspective on north water microbial eukaryotes as arctic ocean sentinels |
publisher |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8052464/ http://www.ncbi.nlm.nih.gov/pubmed/33863972 https://doi.org/10.1038/s41598-021-87906-4 |
geographic |
Arctic Arctic Ocean Ellesmere Island Greenland |
geographic_facet |
Arctic Arctic Ocean Ellesmere Island Greenland |
genre |
Arctic Arctic Ocean Ellesmere Island Greenland Phytoplankton |
genre_facet |
Arctic Arctic Ocean Ellesmere Island Greenland Phytoplankton |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8052464/ http://www.ncbi.nlm.nih.gov/pubmed/33863972 http://dx.doi.org/10.1038/s41598-021-87906-4 |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-87906-4 |
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Scientific Reports |
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