The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica
Cryoconite holes are oases of microbial diversity on ice surfaces. In contrast to the Arctic, where during the summer most cryoconite holes are ‘open’, in Continental Antarctica they are most often ‘lidded’ or completely frozen year-round. Thus, they represent ideal systems for the study of microbia...
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ftdoajarticles:oai:doaj.org/article:7db624b47d4547fd80cefcb0edcc5841 2023-05-15T14:03:41+02:00 The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica Stefanie Lutz Lori A. Ziolkowski Liane G. Benning 2019-06-01T00:00:00Z https://doi.org/10.3390/microorganisms7060160 https://doaj.org/article/7db624b47d4547fd80cefcb0edcc5841 EN eng MDPI AG https://www.mdpi.com/2076-2607/7/6/160 https://doaj.org/toc/2076-2607 2076-2607 doi:10.3390/microorganisms7060160 https://doaj.org/article/7db624b47d4547fd80cefcb0edcc5841 Microorganisms, Vol 7, Iss 6, p 160 (2019) Cryoconite holes Antarctica high-throughput sequencing bacteria eukaryotes carbon 13 C 14 C Biology (General) QH301-705.5 article 2019 ftdoajarticles https://doi.org/10.3390/microorganisms7060160 2022-12-31T07:11:24Z Cryoconite holes are oases of microbial diversity on ice surfaces. In contrast to the Arctic, where during the summer most cryoconite holes are ‘open’, in Continental Antarctica they are most often ‘lidded’ or completely frozen year-round. Thus, they represent ideal systems for the study of microbial community assemblies as well as carbon accumulation, since individual cryoconite holes can be isolated from external inputs for years. Here, we use high-throughput sequencing of the 16S and 18S rRNA genes to describe the bacterial and eukaryotic community compositions in cryoconite holes and surrounding lake, snow, soil and rock samples in Queen Maud Land. We cross correlate our findings with a broad range of geochemical data including for the first time 13 C and 14 C analyses of Antarctic cryoconites. We show that the geographic location has a larger effect on the distribution of the bacterial community compared to the eukaryotic community. Cryoconite holes are distinct from the local soils in both 13 C and 14 C and their isotopic composition is different from similar samples from the Arctic. Carbon contents were generally low (≤0.2%) and older (6−10 ky) than the surrounding soils, suggesting that the cryoconite holes are much more isolated from the atmosphere than the soils. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic East Antarctica Queen Maud Land Directory of Open Access Journals: DOAJ Articles Arctic Antarctic East Antarctica Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Microorganisms 7 6 160 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Cryoconite holes Antarctica high-throughput sequencing bacteria eukaryotes carbon 13 C 14 C Biology (General) QH301-705.5 |
spellingShingle |
Cryoconite holes Antarctica high-throughput sequencing bacteria eukaryotes carbon 13 C 14 C Biology (General) QH301-705.5 Stefanie Lutz Lori A. Ziolkowski Liane G. Benning The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
topic_facet |
Cryoconite holes Antarctica high-throughput sequencing bacteria eukaryotes carbon 13 C 14 C Biology (General) QH301-705.5 |
description |
Cryoconite holes are oases of microbial diversity on ice surfaces. In contrast to the Arctic, where during the summer most cryoconite holes are ‘open’, in Continental Antarctica they are most often ‘lidded’ or completely frozen year-round. Thus, they represent ideal systems for the study of microbial community assemblies as well as carbon accumulation, since individual cryoconite holes can be isolated from external inputs for years. Here, we use high-throughput sequencing of the 16S and 18S rRNA genes to describe the bacterial and eukaryotic community compositions in cryoconite holes and surrounding lake, snow, soil and rock samples in Queen Maud Land. We cross correlate our findings with a broad range of geochemical data including for the first time 13 C and 14 C analyses of Antarctic cryoconites. We show that the geographic location has a larger effect on the distribution of the bacterial community compared to the eukaryotic community. Cryoconite holes are distinct from the local soils in both 13 C and 14 C and their isotopic composition is different from similar samples from the Arctic. Carbon contents were generally low (≤0.2%) and older (6−10 ky) than the surrounding soils, suggesting that the cryoconite holes are much more isolated from the atmosphere than the soils. |
format |
Article in Journal/Newspaper |
author |
Stefanie Lutz Lori A. Ziolkowski Liane G. Benning |
author_facet |
Stefanie Lutz Lori A. Ziolkowski Liane G. Benning |
author_sort |
Stefanie Lutz |
title |
The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
title_short |
The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
title_full |
The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
title_fullStr |
The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
title_full_unstemmed |
The Biodiversity and Geochemistry of Cryoconite Holes in Queen Maud Land, East Antarctica |
title_sort |
biodiversity and geochemistry of cryoconite holes in queen maud land, east antarctica |
publisher |
MDPI AG |
publishDate |
2019 |
url |
https://doi.org/10.3390/microorganisms7060160 https://doaj.org/article/7db624b47d4547fd80cefcb0edcc5841 |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) |
geographic |
Arctic Antarctic East Antarctica Queen Maud Land |
geographic_facet |
Arctic Antarctic East Antarctica Queen Maud Land |
genre |
Antarc* Antarctic Antarctica Arctic East Antarctica Queen Maud Land |
genre_facet |
Antarc* Antarctic Antarctica Arctic East Antarctica Queen Maud Land |
op_source |
Microorganisms, Vol 7, Iss 6, p 160 (2019) |
op_relation |
https://www.mdpi.com/2076-2607/7/6/160 https://doaj.org/toc/2076-2607 2076-2607 doi:10.3390/microorganisms7060160 https://doaj.org/article/7db624b47d4547fd80cefcb0edcc5841 |
op_doi |
https://doi.org/10.3390/microorganisms7060160 |
container_title |
Microorganisms |
container_volume |
7 |
container_issue |
6 |
container_start_page |
160 |
_version_ |
1766274502519422976 |