Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx
Ultra-oligotrophic Lake Untersee is among the largest and deepest surface lakes of Central Queen Maud Land in East Antarctica. It is dammed at its north end by the Anuchin Glacier and the ice-cover dynamics are controlled by sublimation — not melt — as the dominating ablation process and therefore s...
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ftfrontimediafig:oai:figshare.com:article/8108711 2023-05-15T13:38:04+02:00 Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx Klemens Weisleitner Alexandra Perras Christine Moissl-Eichinger Dale T. Andersen Birgit Sattler 2019-05-10T12:28:34Z https://doi.org/10.3389/fmicb.2019.01019.s001 https://figshare.com/articles/Data_Sheet_1_Source_Environments_of_the_Microbiome_in_Perennially_Ice-Covered_Lake_Untersee_Antarctica_docx/8108711 unknown doi:10.3389/fmicb.2019.01019.s001 https://figshare.com/articles/Data_Sheet_1_Source_Environments_of_the_Microbiome_in_Perennially_Ice-Covered_Lake_Untersee_Antarctica_docx/8108711 CC BY 4.0 CC-BY Microbiology Microbial Genetics Microbial Ecology Mycology Lake Untersee 16S rRNA Antarctica Anuchin Glacier cryoconite holes transfer of biota source tracking Dataset 2019 ftfrontimediafig https://doi.org/10.3389/fmicb.2019.01019.s001 2019-05-15T22:59:03Z Ultra-oligotrophic Lake Untersee is among the largest and deepest surface lakes of Central Queen Maud Land in East Antarctica. It is dammed at its north end by the Anuchin Glacier and the ice-cover dynamics are controlled by sublimation — not melt — as the dominating ablation process and therefore surface melt during austral summer does not provide significant amounts of water for recharge compared to subsurface melt of the Anuchin Glacier. Several studies have already described the structure and function of the microbial communities within the water column and benthic environments of Lake Untersee, however, thus far there have been no studies that examine the linkages between the lake ecosystem with that of the surrounding soils or the Anuchin Glacier. The glacier may also play an important role as a major contributor of nutrients and biota into the lake ecosystem. Based on microbial 16S rRNA amplicon sequencing, we showed that the dominant bacterial signatures in Lake Untersee, the Anuchin Glacier and its surrounding soils were affiliated with Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, and Proteobacteria. Aerosol and local soil depositions on the glacier surface resulted in distinct microbial communities developing in glacier ice and cryoconite holes. Based on a source tracking algorithm, we found that cryoconite microbial assemblages were a potential source of organisms, explaining up to 36% of benthic microbial mat communities in the lake. However, the major biotic sources for the lake ecosystem are still unknown, illustrating the possible importance of englacial and subglacial zones. The Anuchin Glacier may be considered as a vector in a biological sense for the bacterial colonization of the perennially ice-covered Lake Untersee. However, despite a thick perennial ice cover, observed “lift-off” microbial mats escaping the lake make a bidirectional transfer of biota plausible. Hence, there is an exchange of biota between Lake Untersee and connective habitats possible despite the apparent ... Dataset Antarc* Antarctica Anuchin Glacier East Antarctica Queen Maud Land Frontiers: Figshare East Antarctica Austral Untersee ENVELOPE(13.467,13.467,-71.350,-71.350) Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Anuchin Glacier ENVELOPE(13.517,13.517,-71.283,-71.283) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Microbiology Microbial Genetics Microbial Ecology Mycology Lake Untersee 16S rRNA Antarctica Anuchin Glacier cryoconite holes transfer of biota source tracking |
spellingShingle |
Microbiology Microbial Genetics Microbial Ecology Mycology Lake Untersee 16S rRNA Antarctica Anuchin Glacier cryoconite holes transfer of biota source tracking Klemens Weisleitner Alexandra Perras Christine Moissl-Eichinger Dale T. Andersen Birgit Sattler Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
topic_facet |
Microbiology Microbial Genetics Microbial Ecology Mycology Lake Untersee 16S rRNA Antarctica Anuchin Glacier cryoconite holes transfer of biota source tracking |
description |
Ultra-oligotrophic Lake Untersee is among the largest and deepest surface lakes of Central Queen Maud Land in East Antarctica. It is dammed at its north end by the Anuchin Glacier and the ice-cover dynamics are controlled by sublimation — not melt — as the dominating ablation process and therefore surface melt during austral summer does not provide significant amounts of water for recharge compared to subsurface melt of the Anuchin Glacier. Several studies have already described the structure and function of the microbial communities within the water column and benthic environments of Lake Untersee, however, thus far there have been no studies that examine the linkages between the lake ecosystem with that of the surrounding soils or the Anuchin Glacier. The glacier may also play an important role as a major contributor of nutrients and biota into the lake ecosystem. Based on microbial 16S rRNA amplicon sequencing, we showed that the dominant bacterial signatures in Lake Untersee, the Anuchin Glacier and its surrounding soils were affiliated with Actinobacteria, Bacteroidetes, Cyanobacteria, Firmicutes, and Proteobacteria. Aerosol and local soil depositions on the glacier surface resulted in distinct microbial communities developing in glacier ice and cryoconite holes. Based on a source tracking algorithm, we found that cryoconite microbial assemblages were a potential source of organisms, explaining up to 36% of benthic microbial mat communities in the lake. However, the major biotic sources for the lake ecosystem are still unknown, illustrating the possible importance of englacial and subglacial zones. The Anuchin Glacier may be considered as a vector in a biological sense for the bacterial colonization of the perennially ice-covered Lake Untersee. However, despite a thick perennial ice cover, observed “lift-off” microbial mats escaping the lake make a bidirectional transfer of biota plausible. Hence, there is an exchange of biota between Lake Untersee and connective habitats possible despite the apparent ... |
format |
Dataset |
author |
Klemens Weisleitner Alexandra Perras Christine Moissl-Eichinger Dale T. Andersen Birgit Sattler |
author_facet |
Klemens Weisleitner Alexandra Perras Christine Moissl-Eichinger Dale T. Andersen Birgit Sattler |
author_sort |
Klemens Weisleitner |
title |
Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
title_short |
Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
title_full |
Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
title_fullStr |
Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
title_full_unstemmed |
Data_Sheet_1_Source Environments of the Microbiome in Perennially Ice-Covered Lake Untersee, Antarctica.docx |
title_sort |
data_sheet_1_source environments of the microbiome in perennially ice-covered lake untersee, antarctica.docx |
publishDate |
2019 |
url |
https://doi.org/10.3389/fmicb.2019.01019.s001 https://figshare.com/articles/Data_Sheet_1_Source_Environments_of_the_Microbiome_in_Perennially_Ice-Covered_Lake_Untersee_Antarctica_docx/8108711 |
long_lat |
ENVELOPE(13.467,13.467,-71.350,-71.350) ENVELOPE(12.000,12.000,-72.500,-72.500) ENVELOPE(13.517,13.517,-71.283,-71.283) |
geographic |
East Antarctica Austral Untersee Queen Maud Land Anuchin Glacier |
geographic_facet |
East Antarctica Austral Untersee Queen Maud Land Anuchin Glacier |
genre |
Antarc* Antarctica Anuchin Glacier East Antarctica Queen Maud Land |
genre_facet |
Antarc* Antarctica Anuchin Glacier East Antarctica Queen Maud Land |
op_relation |
doi:10.3389/fmicb.2019.01019.s001 https://figshare.com/articles/Data_Sheet_1_Source_Environments_of_the_Microbiome_in_Perennially_Ice-Covered_Lake_Untersee_Antarctica_docx/8108711 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmicb.2019.01019.s001 |
_version_ |
1766101281382858752 |