DOI: 10.1016/j.quascirev.2018.12.021
Scopus记录号: 2-s2.0-85059236710
论文题名: Central American climate and microrefugia: A view from the last interglacial
作者: Cárdenes-Sandí G.M. ; Shadik C.R. ; Correa-Metrio A. ; Gosling W.D. ; Cheddadi R. ; Bush M.B.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2019
卷: 205 起始页码: 224
结束页码: 233
语种: 英语
英文关键词: Central America
; Climate change
; Fossil charcoal
; Fossil pollen
; Interglacial
; Microrefugia
; Paleoecology
; Quercus
Scopus关键词: Charcoal
; Multivariant analysis
; Central America
; Fossil pollens
; Interglacial
; Microrefugia
; Paleoecology
; Quercus
; Climate change
; charcoal
; climate variation
; deciduous tree
; dispersal
; fossil record
; Holocene
; Last Interglacial
; multivariate analysis
; paleoecology
; pollen
; precipitation (climatology)
; refuge
; regional climate
; temperature
; Central America
; Cocle
; El Valle
; Panama [Central America]
; Cecropia
; Quercus
英文摘要: The Last Interglacial (c. 128,000 to 115,000 years ago) was the last time when global temperatures may have been higher than those of the Holocene, but little is known about vegetation change or paleoclimate during that period in Central America. A new fossil pollen record from the lowland setting of El Valle, Panama, spanned the period from 137,000 to 98,000 years ago. We used multivariate analysis of modern and fossil pollen samples to provide the first regional quantification of Last Interglacial temperature and precipitation change and found mean annual temperatures were c. 1–2 °C warmer than modern, while precipitation was mostly similar to modern. The montane genus Quercus was intermittently present throughout the interglacial period, leading to the inference that this dispersal-limited taxon was surviving in microrefugia. Both charcoal and the early successional genus Cecropia were noticeably rare in the last interglacial compared with the Holocene. The modern absence of Quercus from Central Panama does not appear to be the product of interglacial warming, but rather a result of dry conditions in the late Holocene and human activity. It is suggested that humans greatly increased fire frequency, thereby favoring Cecropia and eliminating Quercus from the lower portion of its elevational range. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/117394
Appears in Collections: 气候变化与战略
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Recommended Citation:
Cárdenes-Sandí G.M.,Shadik C.R.,Correa-Metrio A.,et al. Central American climate and microrefugia: A view from the last interglacial[J]. Quaternary Science Reviews,2019-01-01,205