New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications
Abstract Premise The Fagaceae comprise around 1000 tree species in the Northern Hemisphere. Despite an extensive fossil pollen record, reconstructing biogeographic patterns is hampered because it is difficult to achieve good taxonomic resolution with light microscopy alone. We investigate dispersed...
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Online Access: | http://dx.doi.org/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ajb2.1716 |
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crwiley:10.1002/ajb2.1716 2024-06-02T08:15:03+00:00 New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications Denk, Thomas Bouchal, Johannes M. 2021 http://dx.doi.org/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ajb2.1716 en eng Wiley http://creativecommons.org/licenses/by-nc/4.0/ American Journal of Botany volume 108, issue 8, page 1500-1524 ISSN 0002-9122 1537-2197 journal-article 2021 crwiley https://doi.org/10.1002/ajb2.1716 2024-05-03T11:41:44Z Abstract Premise The Fagaceae comprise around 1000 tree species in the Northern Hemisphere. Despite an extensive fossil pollen record, reconstructing biogeographic patterns is hampered because it is difficult to achieve good taxonomic resolution with light microscopy alone. We investigate dispersed pollen of Fagaceae from the Miocene Søby flora, Denmark. We explore the latitudinal gradient in Fagaceae distribution during the Miocene Climatic Optimum (MCO) in Europe and the Northern Hemisphere to compare it with the Eocene Warmhouse and the present. Methods We investigated dispersed pollen using light and scanning electron microscopy. We assessed biogeographic patterns in Fagaceae during two warm periods in Earth history (MCO, Eocene) and the present. Results Eight species of Fagaceae were recognized in the Søby flora. Of these, Fagus had a continuous Mediterranean to subarctic distribution during MCO; Quercus sect. Cerris and castaneoids had northern limits in Denmark, and evergreen Quercus sect. Ilex in Central Europe. In a northern hemispheric context, Fagus and sections of Quercus had more northerly distribution limits during Eocene and MCO with maximum northward extensions during Eocene ( Fagus , castaneoids) or Oligo‐Miocene ( Quercus sects. Cerris and Ilex ). The known distribution of the extinct Tricolporopollenites theacoides during MCO included Central Europe and East China, while this taxon thrived in South China during Eocene. Conclusions More northerly distributions during MCO and Eocene probably were determined by temperature. In contrast, fossil occurrences in areas that are arid or semi‐humid today were determined by maritime conditions in these areas (western North America, Central Asia) during the Cenozoic. Article in Journal/Newspaper Subarctic Wiley Online Library American Journal of Botany 108 8 1500 1524 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Premise The Fagaceae comprise around 1000 tree species in the Northern Hemisphere. Despite an extensive fossil pollen record, reconstructing biogeographic patterns is hampered because it is difficult to achieve good taxonomic resolution with light microscopy alone. We investigate dispersed pollen of Fagaceae from the Miocene Søby flora, Denmark. We explore the latitudinal gradient in Fagaceae distribution during the Miocene Climatic Optimum (MCO) in Europe and the Northern Hemisphere to compare it with the Eocene Warmhouse and the present. Methods We investigated dispersed pollen using light and scanning electron microscopy. We assessed biogeographic patterns in Fagaceae during two warm periods in Earth history (MCO, Eocene) and the present. Results Eight species of Fagaceae were recognized in the Søby flora. Of these, Fagus had a continuous Mediterranean to subarctic distribution during MCO; Quercus sect. Cerris and castaneoids had northern limits in Denmark, and evergreen Quercus sect. Ilex in Central Europe. In a northern hemispheric context, Fagus and sections of Quercus had more northerly distribution limits during Eocene and MCO with maximum northward extensions during Eocene ( Fagus , castaneoids) or Oligo‐Miocene ( Quercus sects. Cerris and Ilex ). The known distribution of the extinct Tricolporopollenites theacoides during MCO included Central Europe and East China, while this taxon thrived in South China during Eocene. Conclusions More northerly distributions during MCO and Eocene probably were determined by temperature. In contrast, fossil occurrences in areas that are arid or semi‐humid today were determined by maritime conditions in these areas (western North America, Central Asia) during the Cenozoic. |
format |
Article in Journal/Newspaper |
author |
Denk, Thomas Bouchal, Johannes M. |
spellingShingle |
Denk, Thomas Bouchal, Johannes M. New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
author_facet |
Denk, Thomas Bouchal, Johannes M. |
author_sort |
Denk, Thomas |
title |
New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
title_short |
New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
title_full |
New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
title_fullStr |
New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
title_full_unstemmed |
New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
title_sort |
new fagaceous pollen taxa from the miocene søby flora of denmark and their biogeographic implications |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajb2.1716 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ajb2.1716 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
American Journal of Botany volume 108, issue 8, page 1500-1524 ISSN 0002-9122 1537-2197 |
op_rights |
http://creativecommons.org/licenses/by-nc/4.0/ |
op_doi |
https://doi.org/10.1002/ajb2.1716 |
container_title |
American Journal of Botany |
container_volume |
108 |
container_issue |
8 |
container_start_page |
1500 |
op_container_end_page |
1524 |
_version_ |
1800739119086698496 |