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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Online Access: | https://hdl.handle.net/20.500.11794/70021 https://doi.org/10.1038/s41598-021-87906-4 |
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ftunivlavalcorp:oai:corpus.ulaval.ca:20.500.11794/70021 2024-09-09T19:20:40+00:00 A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels Lovejoy, Connie Freyria, Nastasia J. Joli, Nathalie Arctique Baffin, Région de la baie de Nares, Détroit de 2021-08-15T22:24:58Z application/pdf https://hdl.handle.net/20.500.11794/70021 https://doi.org/10.1038/s41598-021-87906-4 eng eng Nature Publishing Group 2045-2322 http://hdl.handle.net/20.500.11794/70021 doi:10.1038/s41598-021-87906-4 http://purl.org/coar/access_right/c_abf2 Biodiversity Biogeography Microbial communities Ecology Environmental microbiology Marine Biology Microbial ecology Mirobiology Ocean sciences Cellules eucaryotes Protistes Plancton marin Écologie microbienne marine Phytoplancton -- Populations Dinoflagellés article de recherche COAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherche 2021 ftunivlavalcorp https://doi.org/20.500.11794/7002110.1038/s41598-021-87906-4 2024-06-17T23:42:35Z 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. Other/Unknown Material Arctic Arctic Ocean Arctique* Baffin Ellesmere Island Greenland Phytoplankton Université Laval: CorpusUL Arctic Arctic Ocean Ellesmere Island Greenland Nares ENVELOPE(158.167,158.167,-81.450,-81.450) Scientific Reports 11 1 |
institution |
Open Polar |
collection |
Université Laval: CorpusUL |
op_collection_id |
ftunivlavalcorp |
language |
English |
topic |
Biodiversity Biogeography Microbial communities Ecology Environmental microbiology Marine Biology Microbial ecology Mirobiology Ocean sciences Cellules eucaryotes Protistes Plancton marin Écologie microbienne marine Phytoplancton -- Populations Dinoflagellés |
spellingShingle |
Biodiversity Biogeography Microbial communities Ecology Environmental microbiology Marine Biology Microbial ecology Mirobiology Ocean sciences Cellules eucaryotes Protistes Plancton marin Écologie microbienne marine Phytoplancton -- Populations Dinoflagellés Lovejoy, Connie Freyria, Nastasia J. Joli, Nathalie A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels |
topic_facet |
Biodiversity Biogeography Microbial communities Ecology Environmental microbiology Marine Biology Microbial ecology Mirobiology Ocean sciences Cellules eucaryotes Protistes Plancton marin Écologie microbienne marine Phytoplancton -- Populations Dinoflagellés |
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 |
Other/Unknown Material |
author |
Lovejoy, Connie Freyria, Nastasia J. Joli, Nathalie |
author_facet |
Lovejoy, Connie Freyria, Nastasia J. Joli, Nathalie |
author_sort |
Lovejoy, Connie |
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 |
publishDate |
2021 |
url |
https://hdl.handle.net/20.500.11794/70021 https://doi.org/10.1038/s41598-021-87906-4 |
op_coverage |
Arctique Baffin, Région de la baie de Nares, Détroit de |
long_lat |
ENVELOPE(158.167,158.167,-81.450,-81.450) |
geographic |
Arctic Arctic Ocean Ellesmere Island Greenland Nares |
geographic_facet |
Arctic Arctic Ocean Ellesmere Island Greenland Nares |
genre |
Arctic Arctic Ocean Arctique* Baffin Ellesmere Island Greenland Phytoplankton |
genre_facet |
Arctic Arctic Ocean Arctique* Baffin Ellesmere Island Greenland Phytoplankton |
op_relation |
2045-2322 http://hdl.handle.net/20.500.11794/70021 doi:10.1038/s41598-021-87906-4 |
op_rights |
http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/20.500.11794/7002110.1038/s41598-021-87906-4 |
container_title |
Scientific Reports |
container_volume |
11 |
container_issue |
1 |
_version_ |
1809760820131790848 |