New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications
Premise: The Fagaceae comprise around 1000 tree species in the Northern Hemisphere.Despite an extensive fossil pollen record, reconstructing biogeographic patternsis hampered because it is difficult to achieve good taxonomic resolution withlight microscopy alone. We investigate dispersed pollen of F...
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Naturhistoriska riksmuseet, Enheten för paleobiologi
2021
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ftnrm:oai:DiVA.org:nrm-4500 2023-05-15T18:28:35+02:00 New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications Denk, Thomas Bouchal, Johannes M. 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4500 https://doi.org/10.1002/ajb2.1716 eng eng Naturhistoriska riksmuseet, Enheten för paleobiologi American Journal of Botany, 0002-9122, 2021, 108, s. 1500-1524 orcid:0000-0001-9535-1206 orcid:0000-0002-4241-9075 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4500 doi:10.1002/ajb2.1716 info:eu-repo/semantics/openAccess Fagus Fususpollenites fusus middle Miocene Northern Hemisphere paleobotany paleopalynology Quercus scanning electron microscopy Tricolporopollenites pseudocingulum Tricolporopollenites theacoides Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2021 ftnrm https://doi.org/10.1002/ajb2.1716 2021-12-16T17:17:02Z Premise: The Fagaceae comprise around 1000 tree species in the Northern Hemisphere.Despite an extensive fossil pollen record, reconstructing biogeographic patternsis hampered because it is difficult to achieve good taxonomic resolution withlight 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 Swedish Museum of Natural History: Publications (DiVA) American Journal of Botany 108 8 1500 1524 |
institution |
Open Polar |
collection |
Swedish Museum of Natural History: Publications (DiVA) |
op_collection_id |
ftnrm |
language |
English |
topic |
Fagus Fususpollenites fusus middle Miocene Northern Hemisphere paleobotany paleopalynology Quercus scanning electron microscopy Tricolporopollenites pseudocingulum Tricolporopollenites theacoides Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
spellingShingle |
Fagus Fususpollenites fusus middle Miocene Northern Hemisphere paleobotany paleopalynology Quercus scanning electron microscopy Tricolporopollenites pseudocingulum Tricolporopollenites theacoides Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap Denk, Thomas Bouchal, Johannes M. New Fagaceous pollen taxa from the Miocene Søby flora of Denmark and their biogeographic implications |
topic_facet |
Fagus Fususpollenites fusus middle Miocene Northern Hemisphere paleobotany paleopalynology Quercus scanning electron microscopy Tricolporopollenites pseudocingulum Tricolporopollenites theacoides Other Earth and Related Environmental Sciences Annan geovetenskap och miljövetenskap |
description |
Premise: The Fagaceae comprise around 1000 tree species in the Northern Hemisphere.Despite an extensive fossil pollen record, reconstructing biogeographic patternsis hampered because it is difficult to achieve good taxonomic resolution withlight 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. |
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 |
Naturhistoriska riksmuseet, Enheten för paleobiologi |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4500 https://doi.org/10.1002/ajb2.1716 |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
American Journal of Botany, 0002-9122, 2021, 108, s. 1500-1524 orcid:0000-0001-9535-1206 orcid:0000-0002-4241-9075 http://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4500 doi:10.1002/ajb2.1716 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
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1766211121727930368 |