When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains
Summary The replacement of seed‐free plants and gymnosperms by flowering plants during the Cretaceous is one of the most important biotic events in the evolution of life. However, the magnitude of this global turnover remains largely unknown. Here we present sampling‐standardized diversity estimates...
Published in: | New Phytologist |
---|---|
Main Authors: | , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15823 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 |
id |
crwiley:10.1111/nph.15823 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/nph.15823 2024-04-28T08:01:55+00:00 When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains Barreda, Viviana D. Palazzesi, Luis Olivero, Eduardo B. Consejo Nacional de Investigaciones Científicas y Técnicas Agencia Nacional de Promoción Científica y Tecnológica 2019 http://dx.doi.org/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15823 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 223, issue 2, page 1023-1030 ISSN 0028-646X 1469-8137 Plant Science Physiology journal-article 2019 crwiley https://doi.org/10.1111/nph.15823 2024-04-02T08:47:02Z Summary The replacement of seed‐free plants and gymnosperms by flowering plants during the Cretaceous is one of the most important biotic events in the evolution of life. However, the magnitude of this global turnover remains largely unknown. Here we present sampling‐standardized diversity estimates from a high resolution palynological record of the Late Cretaceous (85–66 Ma) from Antarctica, in the context of the past climatic events. Our fossil evidence reveals the occurrence of a rich Campanian flora peaking at c . 80 Ma, with angiosperms as the most diverse group of plants for the first time in Antarctica. This peak of diversity was followed by a period of a stepwise deterioration; 60% of ferns and 40% of gymnosperms became locally extinct from the early/mid‐Campanian to the late Maastrichtian. Although angiosperms also faced several extinctions – 25% became extinct – they were far less affected than nonangiosperms. The onset of deterioration of the greenhouse conditions at the end of the Cretaceous – low CO 2 and global cooling trends – would have led to our observed pattern of change. Overall, our study reveals the beginning of a profound floristic turnover in the highest southern latitudes that pre‐dates the major extinction event of the end of the Cretaceous by 15 Myr. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library New Phytologist 223 2 1023 1030 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Plant Science Physiology |
spellingShingle |
Plant Science Physiology Barreda, Viviana D. Palazzesi, Luis Olivero, Eduardo B. When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
topic_facet |
Plant Science Physiology |
description |
Summary The replacement of seed‐free plants and gymnosperms by flowering plants during the Cretaceous is one of the most important biotic events in the evolution of life. However, the magnitude of this global turnover remains largely unknown. Here we present sampling‐standardized diversity estimates from a high resolution palynological record of the Late Cretaceous (85–66 Ma) from Antarctica, in the context of the past climatic events. Our fossil evidence reveals the occurrence of a rich Campanian flora peaking at c . 80 Ma, with angiosperms as the most diverse group of plants for the first time in Antarctica. This peak of diversity was followed by a period of a stepwise deterioration; 60% of ferns and 40% of gymnosperms became locally extinct from the early/mid‐Campanian to the late Maastrichtian. Although angiosperms also faced several extinctions – 25% became extinct – they were far less affected than nonangiosperms. The onset of deterioration of the greenhouse conditions at the end of the Cretaceous – low CO 2 and global cooling trends – would have led to our observed pattern of change. Overall, our study reveals the beginning of a profound floristic turnover in the highest southern latitudes that pre‐dates the major extinction event of the end of the Cretaceous by 15 Myr. |
author2 |
Consejo Nacional de Investigaciones Científicas y Técnicas Agencia Nacional de Promoción Científica y Tecnológica |
format |
Article in Journal/Newspaper |
author |
Barreda, Viviana D. Palazzesi, Luis Olivero, Eduardo B. |
author_facet |
Barreda, Viviana D. Palazzesi, Luis Olivero, Eduardo B. |
author_sort |
Barreda, Viviana D. |
title |
When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
title_short |
When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
title_full |
When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
title_fullStr |
When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
title_full_unstemmed |
When flowering plants ruled Antarctica: evidence from Cretaceous pollen grains |
title_sort |
when flowering plants ruled antarctica: evidence from cretaceous pollen grains |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/nph.15823 https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/nph.15823 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
New Phytologist volume 223, issue 2, page 1023-1030 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/nph.15823 |
container_title |
New Phytologist |
container_volume |
223 |
container_issue |
2 |
container_start_page |
1023 |
op_container_end_page |
1030 |
_version_ |
1797573465442615296 |