Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity?
Background The impact of climate on biodiversity is indisputable. Climate changes over geological time must have significantly influenced the evolution of biodiversity, ultimately leading to its present pattern. Here we consider the paleoclimate data record, inferring that present-day hot and cold e...
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ftdoajarticles:oai:doaj.org/article:7c872ddef2e84bc9b2808036e77bda1a 2023-05-15T14:57:07+02:00 Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? Thorsten Stoeck Jennifer Kasper John Bunge Chesley Leslin Valya Ilyin Slava Epstein 2007-08-01T00:00:00Z https://doi.org/10.1371/journal.pone.0000728 https://doaj.org/article/7c872ddef2e84bc9b2808036e77bda1a EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0000728 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0000728 https://doaj.org/article/7c872ddef2e84bc9b2808036e77bda1a PLoS ONE, Vol 2, Iss 8, p e728 (2007) Medicine R Science Q article 2007 ftdoajarticles https://doi.org/10.1371/journal.pone.0000728 2022-12-31T12:50:34Z Background The impact of climate on biodiversity is indisputable. Climate changes over geological time must have significantly influenced the evolution of biodiversity, ultimately leading to its present pattern. Here we consider the paleoclimate data record, inferring that present-day hot and cold environments should contain, respectively, the largest and the smallest diversity of ancestral lineages of microbial eukaryotes. Methodology/principal findings We investigate this hypothesis by analyzing an original dataset of 18S rRNA gene sequences from Western Greenland in the Arctic, and data from the existing literature on 18S rRNA gene diversity in hydrothermal vent, temperate sediments, and anoxic water column communities. Unexpectedly, the community from the cold environment emerged as one of the richest observed to date in protistan species, and most diverse in ancestral lineages. Conclusions/significance This pattern is consistent with natural selection sweeps on aerobic non-psychrophilic microbial eukaryotes repeatedly caused by low temperatures and global anoxia of snowball Earth conditions. It implies that cold refuges persisted through the periods of greenhouse conditions, which agrees with some, although not all, current views on the extent of the past global cooling and warming events. We therefore identify cold environments as promising targets for microbial discovery. Article in Journal/Newspaper Arctic Greenland Directory of Open Access Journals: DOAJ Articles Arctic Greenland PLoS ONE 2 8 e728 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
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Medicine R Science Q |
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Medicine R Science Q Thorsten Stoeck Jennifer Kasper John Bunge Chesley Leslin Valya Ilyin Slava Epstein Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
topic_facet |
Medicine R Science Q |
description |
Background The impact of climate on biodiversity is indisputable. Climate changes over geological time must have significantly influenced the evolution of biodiversity, ultimately leading to its present pattern. Here we consider the paleoclimate data record, inferring that present-day hot and cold environments should contain, respectively, the largest and the smallest diversity of ancestral lineages of microbial eukaryotes. Methodology/principal findings We investigate this hypothesis by analyzing an original dataset of 18S rRNA gene sequences from Western Greenland in the Arctic, and data from the existing literature on 18S rRNA gene diversity in hydrothermal vent, temperate sediments, and anoxic water column communities. Unexpectedly, the community from the cold environment emerged as one of the richest observed to date in protistan species, and most diverse in ancestral lineages. Conclusions/significance This pattern is consistent with natural selection sweeps on aerobic non-psychrophilic microbial eukaryotes repeatedly caused by low temperatures and global anoxia of snowball Earth conditions. It implies that cold refuges persisted through the periods of greenhouse conditions, which agrees with some, although not all, current views on the extent of the past global cooling and warming events. We therefore identify cold environments as promising targets for microbial discovery. |
format |
Article in Journal/Newspaper |
author |
Thorsten Stoeck Jennifer Kasper John Bunge Chesley Leslin Valya Ilyin Slava Epstein |
author_facet |
Thorsten Stoeck Jennifer Kasper John Bunge Chesley Leslin Valya Ilyin Slava Epstein |
author_sort |
Thorsten Stoeck |
title |
Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
title_short |
Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
title_full |
Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
title_fullStr |
Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
title_full_unstemmed |
Protistan diversity in the Arctic: a case of paleoclimate shaping modern biodiversity? |
title_sort |
protistan diversity in the arctic: a case of paleoclimate shaping modern biodiversity? |
publisher |
Public Library of Science (PLoS) |
publishDate |
2007 |
url |
https://doi.org/10.1371/journal.pone.0000728 https://doaj.org/article/7c872ddef2e84bc9b2808036e77bda1a |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland |
genre_facet |
Arctic Greenland |
op_source |
PLoS ONE, Vol 2, Iss 8, p e728 (2007) |
op_relation |
https://doi.org/10.1371/journal.pone.0000728 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0000728 https://doaj.org/article/7c872ddef2e84bc9b2808036e77bda1a |
op_doi |
https://doi.org/10.1371/journal.pone.0000728 |
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PLoS ONE |
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2 |
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8 |
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e728 |
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