Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica
Abstract: Despite evidence for microbial endemism, an understanding of the impact of geological and paleoclimate events on the evolution of regional protist communities remains elusive. Here, we provide insights into the biogeographical history of Antarctic freshwater diatoms, using lacustrine fossi...
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ftunivantwerpen:c:irua:181737 2023-11-05T03:33:30+01:00 Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica Pinseel, Eveline Van de Vijver, Bart Wolfe, Alexander P. Harper, Margaret Antoniades, Dermot Ashworth, Allan C. Ector, Luc Lewis, Adam R. Perren, Bianca Hodgson, Dominic A. Sabbe, Koen Verleyen, Elie Vyverman, Wim 2021 https://hdl.handle.net/10067/1817370151162165141 https://repository.uantwerpen.be/docstore/d:irua:8653 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1126/SCIADV.ABH3233 info:eu-repo/semantics/altIdentifier/isi/000697350600027 info:eu-repo/semantics/openAccess 2375-2548 Science Advances Biology Engineering sciences. Technology info:eu-repo/semantics/article 2021 ftunivantwerpen https://doi.org/10.1126/SCIADV.ABH3233 2023-10-11T22:26:02Z Abstract: Despite evidence for microbial endemism, an understanding of the impact of geological and paleoclimate events on the evolution of regional protist communities remains elusive. Here, we provide insights into the biogeographical history of Antarctic freshwater diatoms, using lacustrine fossils from mid-Miocene and Quaternary Antarctica, and dovetail this dataset with a global inventory of modern freshwater diatom communities. We reveal the existence of a diverse mid-Miocene diatom flora bearing similarities with several former Gondwanan landmasses. Miocene cooling and Plio-Pleistocene glaciations triggered multiple extinction waves, resulting in the selective depauperation of this flora. Although extinction dominated, in situ speciation and new colonizations ultimately shaped the species-poor, yet highly adapted and largely endemic, modern Antarctic diatom flora. Our results provide a more holistic view on the scale of biodiversity turnover in Neogene and Pleistocene Antarctica than the fragmentary perspective offered by macrofossils and underscore the sensitivity of lacustrine microbiota to large-scale climate perturbations. Article in Journal/Newspaper Antarc* Antarctic Antarctica IRUA - Institutional Repository van de Universiteit Antwerpen Science Advances 7 38 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology Engineering sciences. Technology |
spellingShingle |
Biology Engineering sciences. Technology Pinseel, Eveline Van de Vijver, Bart Wolfe, Alexander P. Harper, Margaret Antoniades, Dermot Ashworth, Allan C. Ector, Luc Lewis, Adam R. Perren, Bianca Hodgson, Dominic A. Sabbe, Koen Verleyen, Elie Vyverman, Wim Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
topic_facet |
Biology Engineering sciences. Technology |
description |
Abstract: Despite evidence for microbial endemism, an understanding of the impact of geological and paleoclimate events on the evolution of regional protist communities remains elusive. Here, we provide insights into the biogeographical history of Antarctic freshwater diatoms, using lacustrine fossils from mid-Miocene and Quaternary Antarctica, and dovetail this dataset with a global inventory of modern freshwater diatom communities. We reveal the existence of a diverse mid-Miocene diatom flora bearing similarities with several former Gondwanan landmasses. Miocene cooling and Plio-Pleistocene glaciations triggered multiple extinction waves, resulting in the selective depauperation of this flora. Although extinction dominated, in situ speciation and new colonizations ultimately shaped the species-poor, yet highly adapted and largely endemic, modern Antarctic diatom flora. Our results provide a more holistic view on the scale of biodiversity turnover in Neogene and Pleistocene Antarctica than the fragmentary perspective offered by macrofossils and underscore the sensitivity of lacustrine microbiota to large-scale climate perturbations. |
format |
Article in Journal/Newspaper |
author |
Pinseel, Eveline Van de Vijver, Bart Wolfe, Alexander P. Harper, Margaret Antoniades, Dermot Ashworth, Allan C. Ector, Luc Lewis, Adam R. Perren, Bianca Hodgson, Dominic A. Sabbe, Koen Verleyen, Elie Vyverman, Wim |
author_facet |
Pinseel, Eveline Van de Vijver, Bart Wolfe, Alexander P. Harper, Margaret Antoniades, Dermot Ashworth, Allan C. Ector, Luc Lewis, Adam R. Perren, Bianca Hodgson, Dominic A. Sabbe, Koen Verleyen, Elie Vyverman, Wim |
author_sort |
Pinseel, Eveline |
title |
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
title_short |
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
title_full |
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
title_fullStr |
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
title_full_unstemmed |
Extinction of austral diatoms in response to large-scale climate dynamics in Antarctica |
title_sort |
extinction of austral diatoms in response to large-scale climate dynamics in antarctica |
publishDate |
2021 |
url |
https://hdl.handle.net/10067/1817370151162165141 https://repository.uantwerpen.be/docstore/d:irua:8653 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
2375-2548 Science Advances |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1126/SCIADV.ABH3233 info:eu-repo/semantics/altIdentifier/isi/000697350600027 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1126/SCIADV.ABH3233 |
container_title |
Science Advances |
container_volume |
7 |
container_issue |
38 |
_version_ |
1781699832036982784 |