A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels

Abstract 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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Nastasia J. Freyria, Nathalie Joli, Connie Lovejoy
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5c3f200571df455dbce42f396a6a7d21
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5c3f200571df455dbce42f396a6a7d21
record_format	dspace
spelling	oai:doaj.org-article:5c3f200571df455dbce42f396a6a7d212021-12-02T14:27:46ZA decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels10.1038/s41598-021-87906-42045-2322https://doaj.org/article/5c3f200571df455dbce42f396a6a7d212021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87906-4https://doaj.org/toc/2045-2322Abstract 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.Nastasia J. FreyriaNathalie JoliConnie LovejoyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nastasia J. Freyria Nathalie Joli Connie Lovejoy A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels
description	Abstract 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	article
author	Nastasia J. Freyria Nathalie Joli Connie Lovejoy
author_facet	Nastasia J. Freyria Nathalie Joli Connie Lovejoy
author_sort	Nastasia J. Freyria
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 Portfolio
publishDate	2021
url	https://doaj.org/article/5c3f200571df455dbce42f396a6a7d21
work_keys_str_mv	AT nastasiajfreyria adecadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels AT nathaliejoli adecadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels AT connielovejoy adecadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels AT nastasiajfreyria decadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels AT nathaliejoli decadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels AT connielovejoy decadalperspectiveonnorthwatermicrobialeukaryotesasarcticoceansentinels
_version_	1718391253725347840

A decadal perspective on north water microbial eukaryotes as Arctic Ocean sentinels

Ejemplares similares