Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data
Heard Island in the Southern Ocean is a biological hotspot that is suffering the effects of climate change. Significant glacier retreat has generated proglacial lagoons, some of which are open to the ocean. We used pyrotag sequencing of SSU rRNA genes and environmental data to characterize microorga...
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_49939 2024-05-19T07:41:40+00:00 Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data Allen, MA Cavicchioli, R 2017-03-14 application/pdf http://hdl.handle.net/1959.4/unsworks_49939 https://unsworks.unsw.edu.au/bitstreams/da9c4c72-417a-4977-abd2-da5246ea46d1/download https://doi.org/10.1038/srep44480 unknown Springer Nature http://purl.org/au-research/grants/arc/DP1095504 http://hdl.handle.net/1959.4/unsworks_49939 https://unsworks.unsw.edu.au/bitstreams/da9c4c72-417a-4977-abd2-da5246ea46d1/download https://doi.org/10.1038/srep44480 open access https://purl.org/coar/access_right/c_abf2 CC BY https://creativecommons.org/licenses/by/4.0/ free_to_read urn:ISSN:2045-2322 Scientific Reports, 7, 1, 44480 14 Life Below Water 13 Climate Action Animals Archaea Bacteria Biodiversity Climate Change Eukaryota Heterotrophic Processes Ice Cover Islands Phylogeny RNA Ribosomal 16S Salinity Seawater Water Microbiology journal article http://purl.org/coar/resource_type/c_6501 2017 ftunswworks https://doi.org/10.1038/srep44480 2024-04-24T00:28:52Z Heard Island in the Southern Ocean is a biological hotspot that is suffering the effects of climate change. Significant glacier retreat has generated proglacial lagoons, some of which are open to the ocean. We used pyrotag sequencing of SSU rRNA genes and environmental data to characterize microorganisms from two pools adjacent to animal breeding areas, two glacial lagoons and Atlas Cove (marine site). The more abundant taxa included Actinobacteria, Bacteroidetes and Proteobacteria, ciliates and picoflagellates (e.g. Micromonas), and relatively few Archaea. Seal Pool, which is rich in organic matter, was characterized by a heterotrophic degradative community, while the less eutrophic Atlas Pool had more eucaryotic primary producers. Brown Lagoon, with the lowest nutrient levels, had Eucarya and Bacteria predicted to be oligotrophs, possess small cell sizes, and have the ability to metabolize organic matter. The marine influence on Winston Lagoon was evident by its salinity and the abundance of marine-like Gammaproteobacteria, while also lacking typical marine eucaryotes indicating the system was still functioning as a distinct niche. This is the first microbiology study of Heard Island and revealed that communities are distinct at each location and heavily influenced by local environmental factors. Article in Journal/Newspaper Heard Island Southern Ocean UNSW Sydney (The University of New South Wales): UNSWorks Scientific Reports 7 1 |
institution |
Open Polar |
collection |
UNSW Sydney (The University of New South Wales): UNSWorks |
op_collection_id |
ftunswworks |
language |
unknown |
topic |
14 Life Below Water 13 Climate Action Animals Archaea Bacteria Biodiversity Climate Change Eukaryota Heterotrophic Processes Ice Cover Islands Phylogeny RNA Ribosomal 16S Salinity Seawater Water Microbiology |
spellingShingle |
14 Life Below Water 13 Climate Action Animals Archaea Bacteria Biodiversity Climate Change Eukaryota Heterotrophic Processes Ice Cover Islands Phylogeny RNA Ribosomal 16S Salinity Seawater Water Microbiology Allen, MA Cavicchioli, R Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
topic_facet |
14 Life Below Water 13 Climate Action Animals Archaea Bacteria Biodiversity Climate Change Eukaryota Heterotrophic Processes Ice Cover Islands Phylogeny RNA Ribosomal 16S Salinity Seawater Water Microbiology |
description |
Heard Island in the Southern Ocean is a biological hotspot that is suffering the effects of climate change. Significant glacier retreat has generated proglacial lagoons, some of which are open to the ocean. We used pyrotag sequencing of SSU rRNA genes and environmental data to characterize microorganisms from two pools adjacent to animal breeding areas, two glacial lagoons and Atlas Cove (marine site). The more abundant taxa included Actinobacteria, Bacteroidetes and Proteobacteria, ciliates and picoflagellates (e.g. Micromonas), and relatively few Archaea. Seal Pool, which is rich in organic matter, was characterized by a heterotrophic degradative community, while the less eutrophic Atlas Pool had more eucaryotic primary producers. Brown Lagoon, with the lowest nutrient levels, had Eucarya and Bacteria predicted to be oligotrophs, possess small cell sizes, and have the ability to metabolize organic matter. The marine influence on Winston Lagoon was evident by its salinity and the abundance of marine-like Gammaproteobacteria, while also lacking typical marine eucaryotes indicating the system was still functioning as a distinct niche. This is the first microbiology study of Heard Island and revealed that communities are distinct at each location and heavily influenced by local environmental factors. |
format |
Article in Journal/Newspaper |
author |
Allen, MA Cavicchioli, R |
author_facet |
Allen, MA Cavicchioli, R |
author_sort |
Allen, MA |
title |
Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
title_short |
Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
title_full |
Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
title_fullStr |
Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
title_full_unstemmed |
Microbial communities of aquatic environments on Heard Island characterized by pyrotag sequencing and environmental data |
title_sort |
microbial communities of aquatic environments on heard island characterized by pyrotag sequencing and environmental data |
publisher |
Springer Nature |
publishDate |
2017 |
url |
http://hdl.handle.net/1959.4/unsworks_49939 https://unsworks.unsw.edu.au/bitstreams/da9c4c72-417a-4977-abd2-da5246ea46d1/download https://doi.org/10.1038/srep44480 |
genre |
Heard Island Southern Ocean |
genre_facet |
Heard Island Southern Ocean |
op_source |
urn:ISSN:2045-2322 Scientific Reports, 7, 1, 44480 |
op_relation |
http://purl.org/au-research/grants/arc/DP1095504 http://hdl.handle.net/1959.4/unsworks_49939 https://unsworks.unsw.edu.au/bitstreams/da9c4c72-417a-4977-abd2-da5246ea46d1/download https://doi.org/10.1038/srep44480 |
op_rights |
open access https://purl.org/coar/access_right/c_abf2 CC BY https://creativecommons.org/licenses/by/4.0/ free_to_read |
op_doi |
https://doi.org/10.1038/srep44480 |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1799481267965657088 |