Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S)
peer reviewed A late Quaternary diatom stratigraphy of Lago Puyehue (40 degrees 40'S, 72 degrees 28'W) was examined in order to infer past limnological and climatic changes in the South-Chilean Lake District. The diatom assemblages were well preserved in a 1,122 cm long, C-14-dated sedimen...
Published in: | Journal of Paleolimnology |
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Language: | English |
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Springer Science & Business Media B.V.
2008
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Online Access: | https://orbi.uliege.be/handle/2268/14819 https://doi.org/10.1007/s10933-007-9114-1 |
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ftorbi:oai:orbi.ulg.ac.be:2268/14819 2024-04-21T07:47:08+00:00 Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) Sterken, Mieke Verleyen, Elie Sabbe, Koen Terryn, Griet Charlet, Francois Bertrand, Sebastien Boes, Xavier Fagel, Nathalie De Batist, Marc Vyverman, Wim 2008 https://orbi.uliege.be/handle/2268/14819 https://doi.org/10.1007/s10933-007-9114-1 en eng Springer Science & Business Media B.V. urn:issn:0921-2728 urn:issn:1573-0417 https://orbi.uliege.be/handle/2268/14819 info:hdl:2268/14819 doi:10.1007/s10933-007-9114-1 scopus-id:2-s2.0-38149034344 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Paleolimnology, 39 (2), 219-235 (2008) diatoms El Nino Chile Paleolimnology Lago Puyehue deglaciation paleoclimate Westerlies Younger Dryas Last Glacial Maximum Life sciences Aquatic sciences & oceanology Physical chemical mathematical & earth Sciences Earth sciences & physical geography Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Sciences de l’environnement & écologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2008 ftorbi https://doi.org/10.1007/s10933-007-9114-1 2024-03-27T14:55:50Z peer reviewed A late Quaternary diatom stratigraphy of Lago Puyehue (40 degrees 40'S, 72 degrees 28'W) was examined in order to infer past limnological and climatic changes in the South-Chilean Lake District. The diatom assemblages were well preserved in a 1,122 cm long, C-14-dated sediment core spanning the last 17,900 years, and were in support of an early deglaciation of Lago Puyehue. The presence of a short cold spell in South Chile, equivalent to the Younger Dryas event in the Northern Hemisphere, the Antarctic Cold Reversal in Antarctica, or the Huelmo-Mascardi event in southern South America, was not clearly evidenced in the diatom data, although some climate instability may have occurred between 13,400 and 11,700 cal. yr. BP, and a relatively long period (between 16,850 and 12,810 cal. yr. BP) with low absolute abundances and biovolumes could be tentatively interpreted as a period of low rainfall and/or temperatures. An increase in the moisture supply to the lake was tentatively inferred at 12,810 cal. yr. BP. After 9,550 cal. yr. BP, inferred stronger and longer persisting summer stratification, may have been the result of the higher temperatures associated with an early-Holocene thermal optimum. The mid-Holocene appeared to be characterized by a decrease in precipitation, culminating around 5,000 cal. yr. BP, and rising again after 3,000 cal. yr. BP, likely associated with a previously documented lowered frequency and amplitude of El Nino events. An increase in precipitation during the late Holocene (3,000 cal. yr. BP-present) might have marked subsequent increased frequency of El Nino occurrences, leading to drier summers and slightly moister winters in the area. Article in Journal/Newspaper Antarc* Antarctic Antarctica University of Liège: ORBi (Open Repository and Bibliography) Journal of Paleolimnology 39 2 219 235 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
diatoms El Nino Chile Paleolimnology Lago Puyehue deglaciation paleoclimate Westerlies Younger Dryas Last Glacial Maximum Life sciences Aquatic sciences & oceanology Physical chemical mathematical & earth Sciences Earth sciences & physical geography Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Sciences de l’environnement & écologie |
spellingShingle |
diatoms El Nino Chile Paleolimnology Lago Puyehue deglaciation paleoclimate Westerlies Younger Dryas Last Glacial Maximum Life sciences Aquatic sciences & oceanology Physical chemical mathematical & earth Sciences Earth sciences & physical geography Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Sciences de l’environnement & écologie Sterken, Mieke Verleyen, Elie Sabbe, Koen Terryn, Griet Charlet, Francois Bertrand, Sebastien Boes, Xavier Fagel, Nathalie De Batist, Marc Vyverman, Wim Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
topic_facet |
diatoms El Nino Chile Paleolimnology Lago Puyehue deglaciation paleoclimate Westerlies Younger Dryas Last Glacial Maximum Life sciences Aquatic sciences & oceanology Physical chemical mathematical & earth Sciences Earth sciences & physical geography Environmental sciences & ecology Sciences du vivant Sciences aquatiques & océanologie Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Sciences de l’environnement & écologie |
description |
peer reviewed A late Quaternary diatom stratigraphy of Lago Puyehue (40 degrees 40'S, 72 degrees 28'W) was examined in order to infer past limnological and climatic changes in the South-Chilean Lake District. The diatom assemblages were well preserved in a 1,122 cm long, C-14-dated sediment core spanning the last 17,900 years, and were in support of an early deglaciation of Lago Puyehue. The presence of a short cold spell in South Chile, equivalent to the Younger Dryas event in the Northern Hemisphere, the Antarctic Cold Reversal in Antarctica, or the Huelmo-Mascardi event in southern South America, was not clearly evidenced in the diatom data, although some climate instability may have occurred between 13,400 and 11,700 cal. yr. BP, and a relatively long period (between 16,850 and 12,810 cal. yr. BP) with low absolute abundances and biovolumes could be tentatively interpreted as a period of low rainfall and/or temperatures. An increase in the moisture supply to the lake was tentatively inferred at 12,810 cal. yr. BP. After 9,550 cal. yr. BP, inferred stronger and longer persisting summer stratification, may have been the result of the higher temperatures associated with an early-Holocene thermal optimum. The mid-Holocene appeared to be characterized by a decrease in precipitation, culminating around 5,000 cal. yr. BP, and rising again after 3,000 cal. yr. BP, likely associated with a previously documented lowered frequency and amplitude of El Nino events. An increase in precipitation during the late Holocene (3,000 cal. yr. BP-present) might have marked subsequent increased frequency of El Nino occurrences, leading to drier summers and slightly moister winters in the area. |
format |
Article in Journal/Newspaper |
author |
Sterken, Mieke Verleyen, Elie Sabbe, Koen Terryn, Griet Charlet, Francois Bertrand, Sebastien Boes, Xavier Fagel, Nathalie De Batist, Marc Vyverman, Wim |
author_facet |
Sterken, Mieke Verleyen, Elie Sabbe, Koen Terryn, Griet Charlet, Francois Bertrand, Sebastien Boes, Xavier Fagel, Nathalie De Batist, Marc Vyverman, Wim |
author_sort |
Sterken, Mieke |
title |
Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
title_short |
Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
title_full |
Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
title_fullStr |
Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
title_full_unstemmed |
Late Quaternary climatic changes in southern Chile, as recorded in a diatom sequence of Lago Puyehue (40 degrees 40 ' S) |
title_sort |
late quaternary climatic changes in southern chile, as recorded in a diatom sequence of lago puyehue (40 degrees 40 ' s) |
publisher |
Springer Science & Business Media B.V. |
publishDate |
2008 |
url |
https://orbi.uliege.be/handle/2268/14819 https://doi.org/10.1007/s10933-007-9114-1 |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Journal of Paleolimnology, 39 (2), 219-235 (2008) |
op_relation |
urn:issn:0921-2728 urn:issn:1573-0417 https://orbi.uliege.be/handle/2268/14819 info:hdl:2268/14819 doi:10.1007/s10933-007-9114-1 scopus-id:2-s2.0-38149034344 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s10933-007-9114-1 |
container_title |
Journal of Paleolimnology |
container_volume |
39 |
container_issue |
2 |
container_start_page |
219 |
op_container_end_page |
235 |
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1796945566654005248 |