A new Quercus species from the upper Miocene of southwestern China and its ecological significance
Xing, Yaowu1,3,6; Hu, Jinjin2,4; Jacques, Frederic M. B.1; Wang, Li1; Su, Tao1; Huang, Yongjiang2,4; Liu, Yu-Sheng (Christopher)5; Zhou, Zhekun1,2
2013-06-17
发表期刊REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN0034-6667
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
资助信息National Basic Research Program of China; 973 Program [2012CB821901]; National Natural Science Foundation of China; NNSFC [41030212]; Open Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment CAS [SKLLQG 1014]
收录类别SCI
语种英语
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
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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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