DOI: 10.1016/j.quascirev.2014.02.021
Scopus记录号: 2-s2.0-84896501024
论文题名: Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia
作者: Pesce O.H. ; Moreno P.I.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 90 起始页码: 143
结束页码: 157
语种: 英语
英文关键词: Last Glacial termination/Holocene
; Northwestern Patagonia
; Paleofires
; Southern westerly winds
; Temperate rainforests
Scopus关键词: Fires
; Glacial geology
; Vegetation
; Last glacial terminations
; Paleofires
; Patagonia
; Southern westerly winds
; Temperate rainforest
; Climate change
; climate variation
; fire history
; herb
; Last Glacial Maximum
; paleoclimate
; paleoenvironment
; shrub
; vegetation history
; wind direction
; Chile
; Chiloe Island
; Los Lagos
; Patagonia
英文摘要: 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 17,800calyrBP, followed by the immediate colonization of pioneer cold-resistant herbs/shrubs and rapid establishment of closed-canopy Nothofagus forests by 17,000calyrBP. 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 16,100-17,800calyrBP, 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. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60337
Appears in Collections: 过去全球变化的重建
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作者单位: Departamento de Ciencias Ecológicas and Instituto de Ecología y Biodiversidad, Universidad de Chile, Chile
Recommended Citation:
Pesce O.H.,Moreno P.I.. Vegetation, fire and climate change in central-east Isla Grande de Chiloé (43°S) since the Last Glacial Maximum, northwestern Patagonia[J]. Quaternary Science Reviews,2014-01-01,90