High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula
Microorganisms dominate most Antarctic marine ecosystems, in terms of biomass and taxonomic diversity, and play crucial role in ecosystem functioning due to their high metabolic plasticity. Admiralty Bay is the largest bay on King George Island (South Shetland Islands, Antarctic Peninsula) and a com...
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ftpubmed:oai:pubmedcentral.nih.gov:5288382 2023-05-15T13:59:22+02:00 High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula Franco, Diego C. Signori, Camila N. Duarte, Rubens T. D. Nakayama, Cristina R. Campos, Lúcia S. Pellizari, Vivian H. 2017-02-02 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5288382/ https://doi.org/10.3389/fmicb.2017.00153 en eng Frontiers Media S.A. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5288382/ http://dx.doi.org/10.3389/fmicb.2017.00153 Copyright © 2017 Franco, Signori, Duarte, Nakayama, Campos and Pellizari. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. CC-BY Microbiology Text 2017 ftpubmed https://doi.org/10.3389/fmicb.2017.00153 2017-02-19T01:04:45Z Microorganisms dominate most Antarctic marine ecosystems, in terms of biomass and taxonomic diversity, and play crucial role in ecosystem functioning due to their high metabolic plasticity. Admiralty Bay is the largest bay on King George Island (South Shetland Islands, Antarctic Peninsula) and a combination of hydro-oceanographic characteristics (bathymetry, sea ice and glacier melting, seasonal entrance of water masses, turbidity, vertical fluxes) create conditions favoring organic carbon deposition on the seafloor and microbial activities. We sampled surface sediments from 15 sites across Admiralty Bay (100–502 m total depth) and the adjacent North Bransfield Basin (693–1147 m), and used the amplicon 454-sequencing of 16S rRNA gene tags to compare the bacterial composition, diversity, and microbial community structure across environmental parameters (sediment grain size, pigments and organic nutrients) between the two areas. Marine sediments had a high abundance of heterotrophic Gammaproteobacteria (92.4% and 83.8% inside and outside the bay, respectively), followed by Alphaproteobacteria (2.5 and 5.5%), Firmicutes (1.5 and 1.6%), Bacteroidetes (1.1 and 1.7%), Deltaproteobacteria (0.8 and 2.5%) and Actinobacteria (0.7 and 1.3%). Differences in alpha-diversity and bacterial community structure were found between the two areas, reflecting the physical and chemical differences in the sediments, and the organic matter input. Text Antarc* Antarctic Antarctic Peninsula King George Island Sea ice South Shetland Islands PubMed Central (PMC) Admiralty Bay Antarctic Antarctic Peninsula King George Island South Shetland Islands Frontiers in Microbiology 08 |
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English |
topic |
Microbiology |
spellingShingle |
Microbiology Franco, Diego C. Signori, Camila N. Duarte, Rubens T. D. Nakayama, Cristina R. Campos, Lúcia S. Pellizari, Vivian H. High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
topic_facet |
Microbiology |
description |
Microorganisms dominate most Antarctic marine ecosystems, in terms of biomass and taxonomic diversity, and play crucial role in ecosystem functioning due to their high metabolic plasticity. Admiralty Bay is the largest bay on King George Island (South Shetland Islands, Antarctic Peninsula) and a combination of hydro-oceanographic characteristics (bathymetry, sea ice and glacier melting, seasonal entrance of water masses, turbidity, vertical fluxes) create conditions favoring organic carbon deposition on the seafloor and microbial activities. We sampled surface sediments from 15 sites across Admiralty Bay (100–502 m total depth) and the adjacent North Bransfield Basin (693–1147 m), and used the amplicon 454-sequencing of 16S rRNA gene tags to compare the bacterial composition, diversity, and microbial community structure across environmental parameters (sediment grain size, pigments and organic nutrients) between the two areas. Marine sediments had a high abundance of heterotrophic Gammaproteobacteria (92.4% and 83.8% inside and outside the bay, respectively), followed by Alphaproteobacteria (2.5 and 5.5%), Firmicutes (1.5 and 1.6%), Bacteroidetes (1.1 and 1.7%), Deltaproteobacteria (0.8 and 2.5%) and Actinobacteria (0.7 and 1.3%). Differences in alpha-diversity and bacterial community structure were found between the two areas, reflecting the physical and chemical differences in the sediments, and the organic matter input. |
format |
Text |
author |
Franco, Diego C. Signori, Camila N. Duarte, Rubens T. D. Nakayama, Cristina R. Campos, Lúcia S. Pellizari, Vivian H. |
author_facet |
Franco, Diego C. Signori, Camila N. Duarte, Rubens T. D. Nakayama, Cristina R. Campos, Lúcia S. Pellizari, Vivian H. |
author_sort |
Franco, Diego C. |
title |
High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
title_short |
High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
title_full |
High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
title_fullStr |
High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
title_full_unstemmed |
High Prevalence of Gammaproteobacteria in the Sediments of Admiralty Bay and North Bransfield Basin, Northwestern Antarctic Peninsula |
title_sort |
high prevalence of gammaproteobacteria in the sediments of admiralty bay and north bransfield basin, northwestern antarctic peninsula |
publisher |
Frontiers Media S.A. |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5288382/ https://doi.org/10.3389/fmicb.2017.00153 |
geographic |
Admiralty Bay Antarctic Antarctic Peninsula King George Island South Shetland Islands |
geographic_facet |
Admiralty Bay Antarctic Antarctic Peninsula King George Island South Shetland Islands |
genre |
Antarc* Antarctic Antarctic Peninsula King George Island Sea ice South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula King George Island Sea ice South Shetland Islands |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5288382/ http://dx.doi.org/10.3389/fmicb.2017.00153 |
op_rights |
Copyright © 2017 Franco, Signori, Duarte, Nakayama, Campos and Pellizari. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2017.00153 |
container_title |
Frontiers in Microbiology |
container_volume |
08 |
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1766267911262961664 |