DOI: 10.1016/j.quascirev.2014.01.024
Scopus记录号: 2-s2.0-84897080261
论文题名: Climatic and disturbance influences on the temperate rainforests of northwestern Patagonia (40°S) since ~14,500calyrBP
作者: Jara I.A. ; Moreno P.I.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 90 起始页码: 217
结束页码: 228
语种: 英语
英文关键词: Climate change
; Northwestern patagonia
; Temperate rainforest
; Volcanism
; Wildfires
Scopus关键词: Climate change
; Deposition
; Volcanoes
; Disturbance effects
; Disturbance history
; Disturbance regime
; Patagonia
; Regional climate
; Temperate rainforest
; Volcanism
; Wildfires
; Vegetation
; climate effect
; climate forcing
; disturbance
; environmental disturbance
; forest fire
; lowland environment
; proxy climate record
; rainforest
; regional climate
; site investigation
; temperate forest
; volcanism
; Chile
; Los Rios [Chile]
; Patagonia
; Valdivia
英文摘要: We present a detailed record from Lago Pichilafquén to unravel the vegetation, climate and disturbance history of the lowlands of northwestern Patagonia (40°S) since 14,500calyrBP. The presence of 30 tephras throughout the record attest for the proximity of the site to active volcanic centres and allows assessment of the role of volcanic disturbance on past vegetation and fire regime shifts. We interpretalternations in dominance between North Patagonian and Valdivian rainforests driven by changes in temperature and precipitation of westerly origin at multi-millennial and millennial timescales. These trends were punctuated by centennial-scale changes, most of which were coeval with or immediately followed the deposition of tephras and/or paleofires. We identify departures of the local vegetation from the regional trend between 2400 and 7100calyrBP, which we interpret as a response of rainforest vegetation and local fire regimes to the disturbance effect of tephra deposition near Lago Pichilafquén. We also find that volcanic disturbance promoted consistent increases in Eucryphia/Caldcluvia within 30 years and paleofires between 60 and 120years following tephra deposition. Comparisons with palynological records having similar span, time resolution and age control suggest that regional climate has played a central role on the establishment, composition and maintenance of temperate rainforests. This influence is overprinted by disturbance regimes at the local and landscape level, driving divergences and heterogeneity especially at times of relatively weak climatic forcing. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60336
Appears in Collections: 过去全球变化的重建
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作者单位: Institute of Ecology and Biodiversity, Santiago, Chile; School of Geography, Environment and Earth Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand; Department of Ecological Sciences, Universidad de Chile, Santiago, Chile
Recommended Citation:
Jara I.A.,Moreno P.I.. Climatic and disturbance influences on the temperate rainforests of northwestern Patagonia (40°S) since ~14,500calyrBP[J]. Quaternary Science Reviews,2014-01-01,90