Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum
ABSTRACTWinter conditions greatly alter the limnological properties of lotic ecosystems and the availability of nutrients, carbon, and energy resources for microbial processes. However, the composition and metabolic capabilities of winter microbial communities are still largely uncharacterized. Here...
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American Society for Microbiology
2024
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ftdoajarticles:oai:doaj.org/article:adc5059a42764dc6931c55bd82f399a6 2024-09-15T18:08:14+00:00 Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum Marie-Amélie Blais Warwick F. Vincent Adrien Vigneron Aurélie Labarre Alex Matveev Lígia Fonseca Coelho Connie Lovejoy 2024-05-01T00:00:00Z https://doi.org/10.1128/spectrum.04160-23 https://doaj.org/article/adc5059a42764dc6931c55bd82f399a6 EN eng American Society for Microbiology https://journals.asm.org/doi/10.1128/spectrum.04160-23 https://doaj.org/toc/2165-0497 doi:10.1128/spectrum.04160-23 2165-0497 https://doaj.org/article/adc5059a42764dc6931c55bd82f399a6 Microbiology Spectrum, Vol 12, Iss 5 (2024) winter limnology coastal water river metagenome microbiome prokaryotes Microbiology QR1-502 article 2024 ftdoajarticles https://doi.org/10.1128/spectrum.04160-23 2024-08-05T17:49:27Z ABSTRACTWinter conditions greatly alter the limnological properties of lotic ecosystems and the availability of nutrients, carbon, and energy resources for microbial processes. However, the composition and metabolic capabilities of winter microbial communities are still largely uncharacterized. Here, we sampled the winter under-ice microbiome of the Great Whale River (Nunavik, Canada) and its discharge plume into Hudson Bay. We used a combination of 16S and 18S rRNA gene amplicon analysis and metagenomic sequencing to evaluate the size-fractionated composition and functional potential of the microbial plankton. These under-ice communities were diverse in taxonomic composition and metabolically versatile in terms of energy and carbon acquisition, including the capacity to carry out phototrophic processes and degrade aromatic organic matter. Limnological properties, community composition, and metabolic potential differed between shallow and deeper sites in the river, and between fresh and brackish water in the vertical profile of the plume. Community composition also varied by size fraction, with a greater richness of prokaryotes in the larger size fraction (>3 µm) and of microbial eukaryotes in the smaller size fraction (0.22–3 µm). The freshwater communities included cosmopolitan bacterial genera that were previously detected in the summer, indicating their persistence over time in a wide range of physico-chemical conditions. These observations imply that the microbial communities of subarctic rivers and their associated discharge plumes retain a broad taxonomic and functional diversity throughout the year and that microbial processing of complex terrestrial materials persists beneath the ice during the long winter season.IMPORTANCEMicrobiomes vary over multiple timescales, with short- and long-term changes in the physico-chemical environment. However, there is a scarcity of data and understanding about the structure and functioning of aquatic ecosystems during winter relative to summer. This is especially ... Article in Journal/Newspaper Great Whale River Hudson Bay Subarctic Nunavik Directory of Open Access Journals: DOAJ Articles Microbiology Spectrum 12 5 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
winter limnology coastal water river metagenome microbiome prokaryotes Microbiology QR1-502 |
spellingShingle |
winter limnology coastal water river metagenome microbiome prokaryotes Microbiology QR1-502 Marie-Amélie Blais Warwick F. Vincent Adrien Vigneron Aurélie Labarre Alex Matveev Lígia Fonseca Coelho Connie Lovejoy Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
topic_facet |
winter limnology coastal water river metagenome microbiome prokaryotes Microbiology QR1-502 |
description |
ABSTRACTWinter conditions greatly alter the limnological properties of lotic ecosystems and the availability of nutrients, carbon, and energy resources for microbial processes. However, the composition and metabolic capabilities of winter microbial communities are still largely uncharacterized. Here, we sampled the winter under-ice microbiome of the Great Whale River (Nunavik, Canada) and its discharge plume into Hudson Bay. We used a combination of 16S and 18S rRNA gene amplicon analysis and metagenomic sequencing to evaluate the size-fractionated composition and functional potential of the microbial plankton. These under-ice communities were diverse in taxonomic composition and metabolically versatile in terms of energy and carbon acquisition, including the capacity to carry out phototrophic processes and degrade aromatic organic matter. Limnological properties, community composition, and metabolic potential differed between shallow and deeper sites in the river, and between fresh and brackish water in the vertical profile of the plume. Community composition also varied by size fraction, with a greater richness of prokaryotes in the larger size fraction (>3 µm) and of microbial eukaryotes in the smaller size fraction (0.22–3 µm). The freshwater communities included cosmopolitan bacterial genera that were previously detected in the summer, indicating their persistence over time in a wide range of physico-chemical conditions. These observations imply that the microbial communities of subarctic rivers and their associated discharge plumes retain a broad taxonomic and functional diversity throughout the year and that microbial processing of complex terrestrial materials persists beneath the ice during the long winter season.IMPORTANCEMicrobiomes vary over multiple timescales, with short- and long-term changes in the physico-chemical environment. However, there is a scarcity of data and understanding about the structure and functioning of aquatic ecosystems during winter relative to summer. This is especially ... |
format |
Article in Journal/Newspaper |
author |
Marie-Amélie Blais Warwick F. Vincent Adrien Vigneron Aurélie Labarre Alex Matveev Lígia Fonseca Coelho Connie Lovejoy |
author_facet |
Marie-Amélie Blais Warwick F. Vincent Adrien Vigneron Aurélie Labarre Alex Matveev Lígia Fonseca Coelho Connie Lovejoy |
author_sort |
Marie-Amélie Blais |
title |
Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
title_short |
Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
title_full |
Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
title_fullStr |
Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
title_full_unstemmed |
Diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
title_sort |
diverse winter communities and biogeochemical cycling potential in the under-ice microbial plankton of a subarctic river-to-sea continuum |
publisher |
American Society for Microbiology |
publishDate |
2024 |
url |
https://doi.org/10.1128/spectrum.04160-23 https://doaj.org/article/adc5059a42764dc6931c55bd82f399a6 |
genre |
Great Whale River Hudson Bay Subarctic Nunavik |
genre_facet |
Great Whale River Hudson Bay Subarctic Nunavik |
op_source |
Microbiology Spectrum, Vol 12, Iss 5 (2024) |
op_relation |
https://journals.asm.org/doi/10.1128/spectrum.04160-23 https://doaj.org/toc/2165-0497 doi:10.1128/spectrum.04160-23 2165-0497 https://doaj.org/article/adc5059a42764dc6931c55bd82f399a6 |
op_doi |
https://doi.org/10.1128/spectrum.04160-23 |
container_title |
Microbiology Spectrum |
container_volume |
12 |
container_issue |
5 |
_version_ |
1810445570674786304 |