Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic
Polar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of...
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ftdoajarticles:oai:doaj.org/article:810dcdd90aeb493e9e2b4508e519dde0 2023-05-15T15:10:50+02:00 Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan 2021-07-01T00:00:00Z https://doi.org/10.1016/j.ecolind.2021.107704 https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S1470160X21003691 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2021.107704 https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0 Ecological Indicators, Vol 126, Iss , Pp 107704- (2021) Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5 article 2021 ftdoajarticles https://doi.org/10.1016/j.ecolind.2021.107704 2022-12-31T09:19:10Z Polar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of the samples collected from recently deglaciated sites comprised of less diverse, yet abundant bacterial groups compared to the samples from comparatively older sites, where the bacterial diversity was very rich and evenly distributed. Bacterial phyla viz. (a) Proteobacteria (14–44.58%) comprising classes of alpha- and gamma Proteobacteria along with (b) Actinobacteriota (8.8–33.8%) were predominantly distributed across the samples, while phyla Bacteroidota (up to 21%) was mainly distributed in the recently deglaciated samples and phyla Acidobacteriota (up to 24%) in deglaciated samples which were older. Bacterial families (Sulfurovaceae and Sulfurimonadaceae) affiliated with bio weathering of rocks for their energy metabolism was also detected in the present study from the recently deglaciated region. Bacterial genera belonging to Luteolibacter (up to 10.25%), Polaribacter (up to 12.32%), Acidimicrobium (6%) and Sulfitobacter (13.6%) were highly abundant in the recently deglaciated samples, while Candidatus_Udaeobacter (up to 17%) and RB41 (up to 10.5%) were found to be abundant in the older stage samples. Linear discriminant analysis revealed 121 Operational Taxonomic Units that could be attributed to the differences in the community diversity between the two groups. Among the analyzed environmental variables, pH, Cr, Cd and Ca significantly contributed to the differences in the bacterial community structure. Article in Journal/Newspaper Arctic glacier Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Ecological Indicators 126 107704 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5 |
spellingShingle |
Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5 Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
topic_facet |
Glacier foreland Soil development Bacterial succession Amplicon sequencing Ecology QH540-549.5 |
description |
Polar regions provide an ideal environment to investigate the succession of bacterial communities. In the present study, we investigated the bacterial diversity and community structure of the Midtre Lovénbreen glacier foreland ecosystem using a chronosequence approach. The alpha diversity indices of the samples collected from recently deglaciated sites comprised of less diverse, yet abundant bacterial groups compared to the samples from comparatively older sites, where the bacterial diversity was very rich and evenly distributed. Bacterial phyla viz. (a) Proteobacteria (14–44.58%) comprising classes of alpha- and gamma Proteobacteria along with (b) Actinobacteriota (8.8–33.8%) were predominantly distributed across the samples, while phyla Bacteroidota (up to 21%) was mainly distributed in the recently deglaciated samples and phyla Acidobacteriota (up to 24%) in deglaciated samples which were older. Bacterial families (Sulfurovaceae and Sulfurimonadaceae) affiliated with bio weathering of rocks for their energy metabolism was also detected in the present study from the recently deglaciated region. Bacterial genera belonging to Luteolibacter (up to 10.25%), Polaribacter (up to 12.32%), Acidimicrobium (6%) and Sulfitobacter (13.6%) were highly abundant in the recently deglaciated samples, while Candidatus_Udaeobacter (up to 17%) and RB41 (up to 10.5%) were found to be abundant in the older stage samples. Linear discriminant analysis revealed 121 Operational Taxonomic Units that could be attributed to the differences in the community diversity between the two groups. Among the analyzed environmental variables, pH, Cr, Cd and Ca significantly contributed to the differences in the bacterial community structure. |
format |
Article in Journal/Newspaper |
author |
Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan |
author_facet |
Siddarthan Venkatachalam Vatharamattathil Mohanan Kannan Vadakke Neelamanakesavan Saritha Dinesh Sanka Loganathachetti Mahesh Mohan Kottekkatu Padinchati Krishnan |
author_sort |
Siddarthan Venkatachalam |
title |
Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
title_short |
Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
title_full |
Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
title_fullStr |
Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
title_full_unstemmed |
Bacterial diversity and community structure along the glacier foreland of Midtre Lovénbreen, Svalbard, Arctic |
title_sort |
bacterial diversity and community structure along the glacier foreland of midtre lovénbreen, svalbard, arctic |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ecolind.2021.107704 https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic glacier Svalbard |
genre_facet |
Arctic glacier Svalbard |
op_source |
Ecological Indicators, Vol 126, Iss , Pp 107704- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1470160X21003691 https://doaj.org/toc/1470-160X 1470-160X doi:10.1016/j.ecolind.2021.107704 https://doaj.org/article/810dcdd90aeb493e9e2b4508e519dde0 |
op_doi |
https://doi.org/10.1016/j.ecolind.2021.107704 |
container_title |
Ecological Indicators |
container_volume |
126 |
container_start_page |
107704 |
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1766341784800067584 |