Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions
A high-resolution palynological record from Punta Yartou, Fuego-Patagonia (53°51′S; 70°08′W), supported by lithostratigraphy, radiocarbon dating and tephrochronology, was examined to reconstruct the vegetation changes during the last glacial–interglacial transition and the Holocene. Following deglac...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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ftunivstirling:oai:dspace.stir.ac.uk:1893/23365 2023-05-15T13:48:06+02:00 Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions Mansilla, Claudia McCulloch, Robert Morello, Flavia Instituto de la Patagonia The Carnegie Trust Biological and Environmental Sciences Universidad de Magallanes orcid:0000-0001-5542-3703 2016-04-01 application/pdf http://hdl.handle.net/1893/23365 https://doi.org/10.1016/j.palaeo.2016.01.041 http://dspace.stir.ac.uk/bitstream/1893/23365/1/Mansilla%20et%20al%20Pal3%202016.pdf en eng Elsevier Mansilla C, McCulloch R & Morello F (2016) Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions. Palaeogeography, Palaeoclimatology, Palaeoecology, 447, pp. 1-11. https://doi.org/10.1016/j.palaeo.2016.01.041 The timing of glacial/ interglacial environmental changes and climatic inferences from Fuego Patagonia South America The Palaeoenvironmental research for 2007/2008 on Tierra del Fuego island 0 http://hdl.handle.net/1893/23365 doi:10.1016/j.palaeo.2016.01.041 WOS:000372691800001 2-s2.0-84957801736 576559 http://dspace.stir.ac.uk/bitstream/1893/23365/1/Mansilla%20et%20al%20Pal3%202016.pdf The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 2999-12-30 [Mansilla et al Pal3 2016.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. Palaeoecology Nothofagus forest Last Glacial–Interglacial Transition Fuego-Patagonia Palaeo-environments Landscape Change Vegetation change: pollen analysis Journal Article VoR - Version of Record 2016 ftunivstirling https://doi.org/10.1016/j.palaeo.2016.01.041 2022-06-13T18:43:53Z A high-resolution palynological record from Punta Yartou, Fuego-Patagonia (53°51′S; 70°08′W), supported by lithostratigraphy, radiocarbon dating and tephrochronology, was examined to reconstruct the vegetation changes during the last glacial–interglacial transition and the Holocene. Following deglaciation from the Last Glacial Maximum sometime before c. 23,070 Cal yr BP the vegetation was initially dominated by Ericaceous shrubs and following modest climate amelioration between c. 20,480 and 14,820 Cal yr BP the environment favoured the spread of Acaena. The trend to a warmer and more humid climate was interrupted between c. 14,820 and 13,560 Cal yr BP when the vegetation community was dominated by cold tolerant herbs such as Poaceae and Asteraceae (Subfamily Asteroideae), suggesting an open treeless landscape with colder climatic conditions coeval with the Antarctic Cold Reversal. After c. 13,560 Cal yr BP a gradual rise in temperature and humidity is inferred from the colonisation of Nothofagus. A further warming and increase is inferred from the establishment of the forest/steppe ecotone by c. 12,900 Cal yr BP. The early Holocene was then characterised by increasing development of Nothofagus open canopy forest. However, between c. 8080 and 5060 Cal yr BP there was a significant reduction in the forest cover and high values of charcoal which suggest an intense arid phase leading to increased availability of dry fuel. Between c. 5060 and 2170 Cal yr BP there were centennial-scale periods of increased wetter and colder climatic conditions. The Punta Yartou record demonstrates the sensitivity of Fuego-Patagonian forest to changes in the proximity and intensity of the southern westerly winds. Article in Journal/Newspaper Antarc* Antarctic University of Stirling: Stirling Digital Research Repository Antarctic Patagonia The Antarctic Palaeogeography, Palaeoclimatology, Palaeoecology 447 1 11 |
institution |
Open Polar |
collection |
University of Stirling: Stirling Digital Research Repository |
op_collection_id |
ftunivstirling |
language |
English |
topic |
Palaeoecology Nothofagus forest Last Glacial–Interglacial Transition Fuego-Patagonia Palaeo-environments Landscape Change Vegetation change: pollen analysis |
spellingShingle |
Palaeoecology Nothofagus forest Last Glacial–Interglacial Transition Fuego-Patagonia Palaeo-environments Landscape Change Vegetation change: pollen analysis Mansilla, Claudia McCulloch, Robert Morello, Flavia Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
topic_facet |
Palaeoecology Nothofagus forest Last Glacial–Interglacial Transition Fuego-Patagonia Palaeo-environments Landscape Change Vegetation change: pollen analysis |
description |
A high-resolution palynological record from Punta Yartou, Fuego-Patagonia (53°51′S; 70°08′W), supported by lithostratigraphy, radiocarbon dating and tephrochronology, was examined to reconstruct the vegetation changes during the last glacial–interglacial transition and the Holocene. Following deglaciation from the Last Glacial Maximum sometime before c. 23,070 Cal yr BP the vegetation was initially dominated by Ericaceous shrubs and following modest climate amelioration between c. 20,480 and 14,820 Cal yr BP the environment favoured the spread of Acaena. The trend to a warmer and more humid climate was interrupted between c. 14,820 and 13,560 Cal yr BP when the vegetation community was dominated by cold tolerant herbs such as Poaceae and Asteraceae (Subfamily Asteroideae), suggesting an open treeless landscape with colder climatic conditions coeval with the Antarctic Cold Reversal. After c. 13,560 Cal yr BP a gradual rise in temperature and humidity is inferred from the colonisation of Nothofagus. A further warming and increase is inferred from the establishment of the forest/steppe ecotone by c. 12,900 Cal yr BP. The early Holocene was then characterised by increasing development of Nothofagus open canopy forest. However, between c. 8080 and 5060 Cal yr BP there was a significant reduction in the forest cover and high values of charcoal which suggest an intense arid phase leading to increased availability of dry fuel. Between c. 5060 and 2170 Cal yr BP there were centennial-scale periods of increased wetter and colder climatic conditions. The Punta Yartou record demonstrates the sensitivity of Fuego-Patagonian forest to changes in the proximity and intensity of the southern westerly winds. |
author2 |
Instituto de la Patagonia The Carnegie Trust Biological and Environmental Sciences Universidad de Magallanes orcid:0000-0001-5542-3703 |
format |
Article in Journal/Newspaper |
author |
Mansilla, Claudia McCulloch, Robert Morello, Flavia |
author_facet |
Mansilla, Claudia McCulloch, Robert Morello, Flavia |
author_sort |
Mansilla, Claudia |
title |
Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
title_short |
Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
title_full |
Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
title_fullStr |
Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
title_full_unstemmed |
Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions |
title_sort |
palaeoenvironmental change in southern patagonia during the lateglacial and holocene: implications for forest refugia and climate reconstructions |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://hdl.handle.net/1893/23365 https://doi.org/10.1016/j.palaeo.2016.01.041 http://dspace.stir.ac.uk/bitstream/1893/23365/1/Mansilla%20et%20al%20Pal3%202016.pdf |
geographic |
Antarctic Patagonia The Antarctic |
geographic_facet |
Antarctic Patagonia The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Mansilla C, McCulloch R & Morello F (2016) Palaeoenvironmental change in southern Patagonia during the Lateglacial and Holocene: implications for forest refugia and climate reconstructions. Palaeogeography, Palaeoclimatology, Palaeoecology, 447, pp. 1-11. https://doi.org/10.1016/j.palaeo.2016.01.041 The timing of glacial/ interglacial environmental changes and climatic inferences from Fuego Patagonia South America The Palaeoenvironmental research for 2007/2008 on Tierra del Fuego island 0 http://hdl.handle.net/1893/23365 doi:10.1016/j.palaeo.2016.01.041 WOS:000372691800001 2-s2.0-84957801736 576559 http://dspace.stir.ac.uk/bitstream/1893/23365/1/Mansilla%20et%20al%20Pal3%202016.pdf |
op_rights |
The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. http://www.rioxx.net/licenses/under-embargo-all-rights-reserved 2999-12-30 [Mansilla et al Pal3 2016.pdf] The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work. |
op_doi |
https://doi.org/10.1016/j.palaeo.2016.01.041 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
447 |
container_start_page |
1 |
op_container_end_page |
11 |
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1766248598497918976 |