A new Quercus species from the upper Miocene of southwestern China and its ecological significance

	A new Quercus species from the upper Miocene of southwestern China and its ecological significance
	Xing, Yaowu 1,3,6; Hu, Jinjin 2,4; Jacques, Frederic M. B.1; Wang, Li1 ; Su, Tao 1; Huang, Yongjiang 2,4; Liu, Yu-Sheng (Christopher)5; Zhou, Zhekun1,2
通讯作者	Zhou, ZK (reprint author), Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China. ; zhouzk@xtbg.ac.cn
	2013-06-17
发表期刊	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN	0034-6667
卷号	193 页码:99-109
摘要	Quercus praedelavayi Xing Y.W. et Zhou Z.K. sp. nov. is reported from the upper Miocene of the Xianfeng flora in central Yunnan, southwestern China. The fossil species is identified based on the detailed leaf morphological and cuticular examinations. The primary venation is pinnate and the major secondary venation is craspedodromous with regular spacing. Stomata are anomocytic and occur on abaxial epidermis. Trichome bases are unicellular and multicellular. The new fossil species shows the closest affinity with Quercus delavayi, an extant species distributing in southwestern China. The responses of the functional leaf traits to the climate change were studied by comparing the leaf characters of fossil species and its nearest living relative. The stomatal density of Q. praedelavayi is higher than Q. delavayi, which suggests a lower palaeoatmospheric CO2 concentration during the late Miocene. The trichome base density of Q. praedelavayi is higher than the extant Q delavayi. Considering the palaeoclimatic reconstruction of Xianfeng flora, it rejected the hypothesis that increase in trichome density is an adaptation to the drier environment. (C) 2013 Elsevier B.V. All rights reserved.
关键词	Quercus Praedelavayi Quercus Leaf Morphology Late Miocene Yunnan China
学科领域	Plant Sciences ; Paleontology
收录类别	SCI
语种	英语
WOS记录号	WOS:000320089700007
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/16635
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Peoples R China 2.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biogeog & Biodivers, Kunming 650201, Peoples R China 3.Univ Zurich, Inst Systemat Bot, CH-8008 Zurich, Switzerland 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 5.E Tennessee State Univ, Dept Biol Sci, Johnson City, TN 37614 USA 6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
推荐引用方式 GB/T 7714	Xing, Yaowu,Hu, Jinjin,Jacques, Frederic M. B.,et al. A new Quercus species from the upper Miocene of southwestern China and its ecological significance[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2013,193:99-109.
APA	Xing, Yaowu.,Hu, Jinjin.,Jacques, Frederic M. B..,Wang, Li.,Su, Tao.,...&Zhou, Zhekun.(2013).A new Quercus species from the upper Miocene of southwestern China and its ecological significance.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,193,99-109.
MLA	Xing, Yaowu,et al."A new Quercus species from the upper Miocene of southwestern China and its ecological significance".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 193(2013):99-109.

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