Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia
Artículo de publicación SCOPUS We present a detailed record from Lago Lepué to examine vegetation, climate and fire-regime changes since the Last Glacial Maximum (LGM) in central-east Isla Grande de Chiloé (43°S), northwestern Patagonia. Precipitation in this region correlates with the intensity of...
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ftunivchile:oai:repositorio.uchile.cl:2250/120057 2023-05-15T13:41:32+02:00 Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia Pesce, O. H. 2014 application/pdf https://doi.org/10.1016/j.quascirev.2014.02.021 https://repositorio.uchile.cl/handle/2250/120057 en eng Elsevier Quaternary Science Reviews Volume 90, 15 April 2014, Pages 143–157 doi:10.1016/j.quascirev.2014.02.021 https://repositorio.uchile.cl/handle/2250/120057 Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ CC-BY-NC-ND Last Glacial termination/Holocene Artículo de revista 2014 ftunivchile https://doi.org/10.1016/j.quascirev.2014.02.021 2023-03-05T00:51:54Z Artículo de publicación SCOPUS We present a detailed record from Lago Lepué to examine vegetation, climate and fire-regime changes since the Last Glacial Maximum (LGM) in central-east Isla Grande de Chiloé (43°S), northwestern Patagonia. Precipitation in this region correlates with the intensity of the southern westerly winds (SWW), allowing reconstruction of past SWW behavior through precipitation-sensitive sensors. Recession from the LGM glacier margins exposed the central-east sector of Isla Grande de Chiloé by 17,800 cal yr BP, followed by the immediate colonization of pioneer cold-resistant herbs/shrubs and rapid establishment of closed-canopy Nothofagus forests by 17,000 cal yr BP. Broad-leaved temperate rainforests have persisted since then with compositional changes driven by changes in temperature, hydrologic balance and disturbance regimes. We detect low lake levels and enhanced fire activity between 800–2000, 4000–4300, ∼8000–11,000 and 16,100–17,800 cal yr BP, implying southward shifts and/or weaker SWW flow that alternated with cold, humid phases with muted fire activity. Covariation in paleoclimate trends revealed by the Lago Lepué record with tropical and Antarctic records since the LGM, suggests that the SWW have been a highly dynamic component of the climate system capable of linking climate changes from low- and high-southern latitudes during the Last Glacial termination and the current interglacial. Fondecyt Article in Journal/Newspaper Antarc* Antarctic Universidad de Chile: Repositorio académico Antarctic Patagonia Low Lake ENVELOPE(142.677,142.677,-66.993,-66.993) Chiloé ENVELOPE(-63.983,-63.983,-65.517,-65.517) isla Grande ENVELOPE(140.025,140.025,-66.664,-66.664) Quaternary Science Reviews 90 143 157 |
institution |
Open Polar |
collection |
Universidad de Chile: Repositorio académico |
op_collection_id |
ftunivchile |
language |
English |
topic |
Last Glacial termination/Holocene |
spellingShingle |
Last Glacial termination/Holocene Pesce, O. H. Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
topic_facet |
Last Glacial termination/Holocene |
description |
Artículo de publicación SCOPUS We present a detailed record from Lago Lepué to examine vegetation, climate and fire-regime changes since the Last Glacial Maximum (LGM) in central-east Isla Grande de Chiloé (43°S), northwestern Patagonia. Precipitation in this region correlates with the intensity of the southern westerly winds (SWW), allowing reconstruction of past SWW behavior through precipitation-sensitive sensors. Recession from the LGM glacier margins exposed the central-east sector of Isla Grande de Chiloé by 17,800 cal yr BP, followed by the immediate colonization of pioneer cold-resistant herbs/shrubs and rapid establishment of closed-canopy Nothofagus forests by 17,000 cal yr BP. Broad-leaved temperate rainforests have persisted since then with compositional changes driven by changes in temperature, hydrologic balance and disturbance regimes. We detect low lake levels and enhanced fire activity between 800–2000, 4000–4300, ∼8000–11,000 and 16,100–17,800 cal yr BP, implying southward shifts and/or weaker SWW flow that alternated with cold, humid phases with muted fire activity. Covariation in paleoclimate trends revealed by the Lago Lepué record with tropical and Antarctic records since the LGM, suggests that the SWW have been a highly dynamic component of the climate system capable of linking climate changes from low- and high-southern latitudes during the Last Glacial termination and the current interglacial. Fondecyt |
format |
Article in Journal/Newspaper |
author |
Pesce, O. H. |
author_facet |
Pesce, O. H. |
author_sort |
Pesce, O. H. |
title |
Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
title_short |
Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
title_full |
Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
title_fullStr |
Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
title_full_unstemmed |
Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia |
title_sort |
vegetation, fire and climate change in central-east isla grande de chiloé (43°s) since the last glacial maximum, northwestern patagonia |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://doi.org/10.1016/j.quascirev.2014.02.021 https://repositorio.uchile.cl/handle/2250/120057 |
long_lat |
ENVELOPE(142.677,142.677,-66.993,-66.993) ENVELOPE(-63.983,-63.983,-65.517,-65.517) ENVELOPE(140.025,140.025,-66.664,-66.664) |
geographic |
Antarctic Patagonia Low Lake Chiloé isla Grande |
geographic_facet |
Antarctic Patagonia Low Lake Chiloé isla Grande |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Quaternary Science Reviews Volume 90, 15 April 2014, Pages 143–157 doi:10.1016/j.quascirev.2014.02.021 https://repositorio.uchile.cl/handle/2250/120057 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Chile http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.quascirev.2014.02.021 |
container_title |
Quaternary Science Reviews |
container_volume |
90 |
container_start_page |
143 |
op_container_end_page |
157 |
_version_ |
1766151799452991488 |