Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake
Abstract Knowledge about biodiversity changes during transitions from glacial landscape to lake formation is limited to contemporary studies. Here, we combined analyses of lithology, chronology and geochemistry with sedimentary ancient DNA metabarcoding to assess such transition in maritime Antarcti...
Published in: | Communications Earth & Environment |
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Online Access: | https://doi.org/10.1038/s43247-024-01245-6 https://doaj.org/article/30d6cf1878da451eab0a29226476bf4d |
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ftdoajarticles:oai:doaj.org/article:30d6cf1878da451eab0a29226476bf4d 2024-09-15T17:43:39+00:00 Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake C. Piccini F. Bertoglio R. Sommaruga G. Martínez de la Escalera L. Pérez L. Bugoni L. Bergamino H. Evangelista F. García-Rodriguez 2024-02-01T00:00:00Z https://doi.org/10.1038/s43247-024-01245-6 https://doaj.org/article/30d6cf1878da451eab0a29226476bf4d EN eng Nature Portfolio https://doi.org/10.1038/s43247-024-01245-6 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-024-01245-6 2662-4435 https://doaj.org/article/30d6cf1878da451eab0a29226476bf4d Communications Earth & Environment, Vol 5, Iss 1, Pp 1-11 (2024) Geology QE1-996.5 Environmental sciences GE1-350 article 2024 ftdoajarticles https://doi.org/10.1038/s43247-024-01245-6 2024-08-05T17:49:52Z Abstract Knowledge about biodiversity changes during transitions from glacial landscape to lake formation is limited to contemporary studies. Here, we combined analyses of lithology, chronology and geochemistry with sedimentary ancient DNA metabarcoding to assess such transition in maritime Antarctica. We inferred three paleoenvironmental stages covering the Holocene glacier retreat process. From 4900 to 3850 years before the present, we found the lowest prokaryotic richness/diversity, with bacterial taxa indicators associated to soil and terrestrial environments. From 3850 to 2650 years before the present, a higher carbon content, higher Carbon/Nitrogen variability, increased species richness/diversity, and prokaryotic taxa indicators of long-term energy starvation were detected. Finally, from 2650 to 1070 years before the present, we inferred the onset of a genuine lacustrine environment holding stable Carbon/Nitrogen ratios and the highest prokaryotic diversity, with known aquatic bacterial taxa. Our study unveils for the first time the evolution from a glacier-covered to a freshwater lake through a millennial scale. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Communications Earth & Environment 5 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 Environmental sciences GE1-350 |
spellingShingle |
Geology QE1-996.5 Environmental sciences GE1-350 C. Piccini F. Bertoglio R. Sommaruga G. Martínez de la Escalera L. Pérez L. Bugoni L. Bergamino H. Evangelista F. García-Rodriguez Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
topic_facet |
Geology QE1-996.5 Environmental sciences GE1-350 |
description |
Abstract Knowledge about biodiversity changes during transitions from glacial landscape to lake formation is limited to contemporary studies. Here, we combined analyses of lithology, chronology and geochemistry with sedimentary ancient DNA metabarcoding to assess such transition in maritime Antarctica. We inferred three paleoenvironmental stages covering the Holocene glacier retreat process. From 4900 to 3850 years before the present, we found the lowest prokaryotic richness/diversity, with bacterial taxa indicators associated to soil and terrestrial environments. From 3850 to 2650 years before the present, a higher carbon content, higher Carbon/Nitrogen variability, increased species richness/diversity, and prokaryotic taxa indicators of long-term energy starvation were detected. Finally, from 2650 to 1070 years before the present, we inferred the onset of a genuine lacustrine environment holding stable Carbon/Nitrogen ratios and the highest prokaryotic diversity, with known aquatic bacterial taxa. Our study unveils for the first time the evolution from a glacier-covered to a freshwater lake through a millennial scale. |
format |
Article in Journal/Newspaper |
author |
C. Piccini F. Bertoglio R. Sommaruga G. Martínez de la Escalera L. Pérez L. Bugoni L. Bergamino H. Evangelista F. García-Rodriguez |
author_facet |
C. Piccini F. Bertoglio R. Sommaruga G. Martínez de la Escalera L. Pérez L. Bugoni L. Bergamino H. Evangelista F. García-Rodriguez |
author_sort |
C. Piccini |
title |
Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
title_short |
Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
title_full |
Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
title_fullStr |
Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
title_full_unstemmed |
Prokaryotic richness and diversity increased during Holocene glacier retreat and onset of an Antarctic Lake |
title_sort |
prokaryotic richness and diversity increased during holocene glacier retreat and onset of an antarctic lake |
publisher |
Nature Portfolio |
publishDate |
2024 |
url |
https://doi.org/10.1038/s43247-024-01245-6 https://doaj.org/article/30d6cf1878da451eab0a29226476bf4d |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Communications Earth & Environment, Vol 5, Iss 1, Pp 1-11 (2024) |
op_relation |
https://doi.org/10.1038/s43247-024-01245-6 https://doaj.org/toc/2662-4435 doi:10.1038/s43247-024-01245-6 2662-4435 https://doaj.org/article/30d6cf1878da451eab0a29226476bf4d |
op_doi |
https://doi.org/10.1038/s43247-024-01245-6 |
container_title |
Communications Earth & Environment |
container_volume |
5 |
container_issue |
1 |
_version_ |
1810490733295042560 |