globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.01.041
论文题名:
Palaeoenvironmental change in Southern Patagonia during the Lateglacial and Holocene: Implications for forest refugia and climate reconstructions
作者: Mansilla C.A.; McCulloch R.D.; Morello F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 447
起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Fuego-Patagonia ; Last Glacial-Interglacial Transition ; Nothofagus forest ; Palaeoecology
英文摘要: A high-resolution palynological record from Punta Yartou, Fuego-Patagonia (53°51'S; 70°08'W), supported by lithostratigraphy, radiocarbon dating and tephrochronology, was examined to reconstruct the vegetation changes during the last glacial-interglacial transition and the Holocene. Following deglaciation from the Last Glacial Maximum sometime before c. 23,070 Cal yr BP the vegetation was initially dominated by Ericaceous shrubs and following modest climate amelioration between c. 20,480 and 14,820 Cal yr BP the environment favoured the spread of Acaena. The trend to a warmer and more humid climate was interrupted between c. 14,820 and 13,560 Cal yr BP when the vegetation community was dominated by cold tolerant herbs such as Poaceae and Asteraceae (Subfamily Asteroideae), suggesting an open treeless landscape with colder climatic conditions coeval with the Antarctic Cold Reversal. After c. 13,560 Cal yr BP a gradual rise in temperature and humidity is inferred from the colonisation of Nothofagus. A further warming and increase is inferred from the establishment of the forest/steppe ecotone by c. 12,900 Cal yr BP. The early Holocene was then characterised by increasing development of Nothofagus open canopy forest. However, between c. 8080 and 5060 Cal yr BP there was a significant reduction in the forest cover and high values of charcoal which suggest an intense arid phase leading to increased availability of dry fuel. Between c. 5060 and 2170 Cal yr BP there were centennial-scale periods of increased wetter and colder climatic conditions. The Punta Yartou record demonstrates the sensitivity of Fuego-Patagonian forest to changes in the proximity and intensity of the southern westerly winds. © 2016 Elsevier B.V.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68535
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Biological and Environmental Science, University of Stirling, Stirling, Scotland, United Kingdom; Universidad de Magallanes, Instituto de la Patagonia, Centro de Estudios del Hombre Austral, Av. Bulnes, Punta Arenas, Chile

Recommended Citation:
Mansilla C.A.,McCulloch R.D.,Morello F.. Palaeoenvironmental change in Southern Patagonia during the Lateglacial and Holocene: Implications for forest refugia and climate reconstructions[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,447
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Mansilla C.A.]'s Articles
[McCulloch R.D.]'s Articles
[Morello F.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Mansilla C.A.]'s Articles
[McCulloch R.D.]'s Articles
[Morello F.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Mansilla C.A.]‘s Articles
[McCulloch R.D.]‘s Articles
[Morello F.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.