Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation
Abstract Background and aims At the West Antarctic Peninsula, snow algae blooms are composed of complex microbial communities dominated by green microalgae and bacteria. During their progression, the assembly of these microbial communities occurs under harsh environmental conditions and variable nut...
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ftdoajarticles:oai:doaj.org/article:1f4cc481d81a40d8a8319445e2f0db2e 2023-10-09T21:47:09+02:00 Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation Daniela F. Soto Iván Gómez Pirjo Huovinen 2023-09-01T00:00:00Z https://doi.org/10.1186/s40168-023-01643-6 https://doaj.org/article/1f4cc481d81a40d8a8319445e2f0db2e EN eng BMC https://doi.org/10.1186/s40168-023-01643-6 https://doaj.org/toc/2049-2618 doi:10.1186/s40168-023-01643-6 2049-2618 https://doaj.org/article/1f4cc481d81a40d8a8319445e2f0db2e Microbiome, Vol 11, Iss 1, Pp 1-19 (2023) Microbial ecology QR100-130 article 2023 ftdoajarticles https://doi.org/10.1186/s40168-023-01643-6 2023-09-17T00:39:25Z Abstract Background and aims At the West Antarctic Peninsula, snow algae blooms are composed of complex microbial communities dominated by green microalgae and bacteria. During their progression, the assembly of these microbial communities occurs under harsh environmental conditions and variable nutrient content due to fast snow melting. To date, it is still unclear what are the ecological mechanisms governing the composition and abundance of microorganisms during the formation of snow algae blooms. In this study, we aim to examine the main ecological mechanisms governing the assembly of snow algae blooms from early stages to colorful stages blooms. Methods The composition of the microbial communities within snow algae blooms was recorded in the West Antarctic Peninsula (Isabel Riquelme Islet) during a 35-day period using 16S rRNA and 18S rRNA metabarcoding. In addition, the contribution of different ecological processes to the assembly of the microbial community was quantified using phylogenetic bin-based null model analysis. Results Our results showed that alpha diversity indices of the eukaryotic communities displayed a higher variation during the formation of the algae bloom compared with the bacterial community. Additionally, in a macronutrients rich environment, the content of nitrate, ammonium, phosphate, and organic carbon did not play a major role in structuring the community. The quantification of ecological processes showed that the bacterial community assembly was governed by selective processes such as homogenous selection. In contrast, stochastic processes such as dispersal limitation and drift, and to a lesser extent, homogenous selection, regulate the eukaryotic community. Conclusions Overall, our study highlights the differences in the microbial assembly between bacteria and eukaryotes in snow algae blooms and proposes a model to integrate both assembly processes. Video Abstract Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Antarctic Antarctic Peninsula Riquelme ENVELOPE(-63.583,-63.583,-65.083,-65.083) Microbiome 11 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
Microbial ecology QR100-130 |
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Microbial ecology QR100-130 Daniela F. Soto Iván Gómez Pirjo Huovinen Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
topic_facet |
Microbial ecology QR100-130 |
description |
Abstract Background and aims At the West Antarctic Peninsula, snow algae blooms are composed of complex microbial communities dominated by green microalgae and bacteria. During their progression, the assembly of these microbial communities occurs under harsh environmental conditions and variable nutrient content due to fast snow melting. To date, it is still unclear what are the ecological mechanisms governing the composition and abundance of microorganisms during the formation of snow algae blooms. In this study, we aim to examine the main ecological mechanisms governing the assembly of snow algae blooms from early stages to colorful stages blooms. Methods The composition of the microbial communities within snow algae blooms was recorded in the West Antarctic Peninsula (Isabel Riquelme Islet) during a 35-day period using 16S rRNA and 18S rRNA metabarcoding. In addition, the contribution of different ecological processes to the assembly of the microbial community was quantified using phylogenetic bin-based null model analysis. Results Our results showed that alpha diversity indices of the eukaryotic communities displayed a higher variation during the formation of the algae bloom compared with the bacterial community. Additionally, in a macronutrients rich environment, the content of nitrate, ammonium, phosphate, and organic carbon did not play a major role in structuring the community. The quantification of ecological processes showed that the bacterial community assembly was governed by selective processes such as homogenous selection. In contrast, stochastic processes such as dispersal limitation and drift, and to a lesser extent, homogenous selection, regulate the eukaryotic community. Conclusions Overall, our study highlights the differences in the microbial assembly between bacteria and eukaryotes in snow algae blooms and proposes a model to integrate both assembly processes. Video Abstract |
format |
Article in Journal/Newspaper |
author |
Daniela F. Soto Iván Gómez Pirjo Huovinen |
author_facet |
Daniela F. Soto Iván Gómez Pirjo Huovinen |
author_sort |
Daniela F. Soto |
title |
Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
title_short |
Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
title_full |
Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
title_fullStr |
Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
title_full_unstemmed |
Antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
title_sort |
antarctic snow algae: unraveling the processes underlying microbial community assembly during blooms formation |
publisher |
BMC |
publishDate |
2023 |
url |
https://doi.org/10.1186/s40168-023-01643-6 https://doaj.org/article/1f4cc481d81a40d8a8319445e2f0db2e |
long_lat |
ENVELOPE(-63.583,-63.583,-65.083,-65.083) |
geographic |
Antarctic Antarctic Peninsula Riquelme |
geographic_facet |
Antarctic Antarctic Peninsula Riquelme |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Microbiome, Vol 11, Iss 1, Pp 1-19 (2023) |
op_relation |
https://doi.org/10.1186/s40168-023-01643-6 https://doaj.org/toc/2049-2618 doi:10.1186/s40168-023-01643-6 2049-2618 https://doaj.org/article/1f4cc481d81a40d8a8319445e2f0db2e |
op_doi |
https://doi.org/10.1186/s40168-023-01643-6 |
container_title |
Microbiome |
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11 |
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1 |
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1779309971891027968 |