Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal?
Abstract Aim Geological and fossil records are critical for historical biogeography studies. A plant fossil assemblage from a small, well‐dated, transient late Palaeocene island was re‐investigated with regard to regional geology and vicariance versus dispersal hypotheses. Location Deep Sea Drilling...
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crwiley:10.1111/j.1365-2699.2010.02279.x 2024-04-14T08:02:03+00:00 Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? Carpenter, Raymond J. Truswell, Elizabeth M. Harris, Wayne K. 2010 http://dx.doi.org/10.1111/j.1365-2699.2010.02279.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2699.2010.02279.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2699.2010.02279.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Biogeography volume 37, issue 7, page 1202-1213 ISSN 0305-0270 1365-2699 Ecology Ecology, Evolution, Behavior and Systematics journal-article 2010 crwiley https://doi.org/10.1111/j.1365-2699.2010.02279.x 2024-03-19T10:54:18Z Abstract Aim Geological and fossil records are critical for historical biogeography studies. A plant fossil assemblage from a small, well‐dated, transient late Palaeocene island was re‐investigated with regard to regional geology and vicariance versus dispersal hypotheses. Location Deep Sea Drilling Program Leg 22, Site 214 on the Ninetyeast Ridge (NER) in the mid‐Indian Ocean region. Methods Leaf cuticular material was recovered from residues from a previous palynofloral study of Site 214 sediments during the 1970s and identified. The palynoflora was reassessed. Results The only leaf cuticular material recovered with stomata can be placed in crown‐group Lauraceae. It is confirmed that the palynoflora reflects the presence of a low‐diversity island flora in the late Palaeocene, comprising ferns and mostly herbaceous angiosperms with readily dispersible propagules, and perhaps austral podocarps. Other pollen taxa of almost certain local origin were arecoid palms and taxa related to Chloranthaceae. The strong overall similarity of the palynoflora to Australo‐Antarctic and New Zealand assemblages is also confirmed. Main conclusions Foliar fossils of Lauraceae demonstrate the occurrence of one of the world’s largest, most widely distributed woody plant families on a late Palaeocene island. The presence of plants on this island could be explained by vicariance via a vegetated Upper Cretaceous Kerguelen Plateau, in part because crown‐group Lauraceae may be at least this old. However, there are records of other taxa in the Kerguelen region that are anomalous with vicariance, plus evidence for a catastrophic biotic extinction event centred in the area in the latest Cretaceous. Plants were therefore most likely to have reached the island by means of dispersal. This suggests either the presence of presently unknown vegetated land nearby in the Kerguelen region in the late Palaeocene, or long‐distance dispersal, probably from the Australian region. The dispersal of viable seeds could have been facilitated by birds or ... Article in Journal/Newspaper Antarc* Antarctic Wiley Online Library Antarctic Austral Indian Kerguelen Ner ENVELOPE(6.622,6.622,62.612,62.612) New Zealand Journal of Biogeography 37 7 1202 1213 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Ecology, Evolution, Behavior and Systematics Carpenter, Raymond J. Truswell, Elizabeth M. Harris, Wayne K. Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
topic_facet |
Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Aim Geological and fossil records are critical for historical biogeography studies. A plant fossil assemblage from a small, well‐dated, transient late Palaeocene island was re‐investigated with regard to regional geology and vicariance versus dispersal hypotheses. Location Deep Sea Drilling Program Leg 22, Site 214 on the Ninetyeast Ridge (NER) in the mid‐Indian Ocean region. Methods Leaf cuticular material was recovered from residues from a previous palynofloral study of Site 214 sediments during the 1970s and identified. The palynoflora was reassessed. Results The only leaf cuticular material recovered with stomata can be placed in crown‐group Lauraceae. It is confirmed that the palynoflora reflects the presence of a low‐diversity island flora in the late Palaeocene, comprising ferns and mostly herbaceous angiosperms with readily dispersible propagules, and perhaps austral podocarps. Other pollen taxa of almost certain local origin were arecoid palms and taxa related to Chloranthaceae. The strong overall similarity of the palynoflora to Australo‐Antarctic and New Zealand assemblages is also confirmed. Main conclusions Foliar fossils of Lauraceae demonstrate the occurrence of one of the world’s largest, most widely distributed woody plant families on a late Palaeocene island. The presence of plants on this island could be explained by vicariance via a vegetated Upper Cretaceous Kerguelen Plateau, in part because crown‐group Lauraceae may be at least this old. However, there are records of other taxa in the Kerguelen region that are anomalous with vicariance, plus evidence for a catastrophic biotic extinction event centred in the area in the latest Cretaceous. Plants were therefore most likely to have reached the island by means of dispersal. This suggests either the presence of presently unknown vegetated land nearby in the Kerguelen region in the late Palaeocene, or long‐distance dispersal, probably from the Australian region. The dispersal of viable seeds could have been facilitated by birds or ... |
format |
Article in Journal/Newspaper |
author |
Carpenter, Raymond J. Truswell, Elizabeth M. Harris, Wayne K. |
author_facet |
Carpenter, Raymond J. Truswell, Elizabeth M. Harris, Wayne K. |
author_sort |
Carpenter, Raymond J. |
title |
Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
title_short |
Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
title_full |
Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
title_fullStr |
Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
title_full_unstemmed |
Lauraceae fossils from a volcanic Palaeocene oceanic island, Ninetyeast Ridge, Indian Ocean: ancient long‐distance dispersal? |
title_sort |
lauraceae fossils from a volcanic palaeocene oceanic island, ninetyeast ridge, indian ocean: ancient long‐distance dispersal? |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1111/j.1365-2699.2010.02279.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2699.2010.02279.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2699.2010.02279.x |
long_lat |
ENVELOPE(6.622,6.622,62.612,62.612) |
geographic |
Antarctic Austral Indian Kerguelen Ner New Zealand |
geographic_facet |
Antarctic Austral Indian Kerguelen Ner New Zealand |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of Biogeography volume 37, issue 7, page 1202-1213 ISSN 0305-0270 1365-2699 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2699.2010.02279.x |
container_title |
Journal of Biogeography |
container_volume |
37 |
container_issue |
7 |
container_start_page |
1202 |
op_container_end_page |
1213 |
_version_ |
1796312300370526208 |