Asian Eocene monsoons as revealed by leaf architectural signatures

doi:10.1016/j.epsl.2016.05.036

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	Asian Eocene monsoons as revealed by leaf architectural signatures
	Spicer, Robert A.; Yang, Jian ; Herman, Alexei B.; Kodrul, Tatiana 3,4; Maslova, Natalia 5; Spicer, Teresa E. V.; Aleksandrova, Galina 4; Jin, Jianhua 3
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2016
卷号	449 页码:61-68
关键词	Asia monsoon climate evolution plant fossils leaf architecture
ISSN号	0012-821X
DOI	10.1016/j.epsl.2016.05.036
文献子类	Article
英文摘要	The onset and development of the Asian monsoon systems is a topic that has attracted considerable research effort but proxy data limitations, coupled with a diversity of definitions and metrics characterizing monsoon phenomena, have generated much debate. Failure of geological proxies to yield metrics capable of distinguishing between rainfall seasonality induced by migrations of the Inter-tropical Convergence Zone (ITCZ) from that attributable to topographically modified seasonal pressure reversals has frustrated attempts to understand mechanisms underpinning monsoon development and dynamics. Here we circumvent the use of such single climate parameter metrics in favor of detecting directly the distinctive attributes of different monsoon regimes encoded in leaf fossils. Leaf form adapts to the prevailing climate, particularly under the extreme seasonal stresses imposed by monsoons, so it is likely that fossil leaves carry a unique signature of past monsoon regimes. Leaf form trait spectra obtained from fossils from Eocene basins in southern China were compared with those seen in modern leaves growing under known climate regimes. The fossil leaf trait spectra, including those derived from previously published fossil floras from northwestern India, were most similar to those found in vegetation exposed to the modern Indonesia Australia Monsoon (I AM), which is largely a product of seasonal migrations of the ITCZ. The presence of this distinctive leaf physiognomic signature suggests that although a monsoon climate existed in Eocene time across southern Asia the characteristics of the modem topographically enhanced South Asia Monsoon had yet to develop. By the Eocene leaves in South Asia had become well adapted to an I AM type regime across many taxa and points to the existence of a pervasive monsoon climate prior to the Eocene. No fossil trait spectra typical of exposure to the modern East Asia monsoon were seen, suggesting the effects of this system in southern China were a much later development. (C) 2016 Elsevier B.V. All rights reserved.
学科主题	Geochemistry & Geophysics
电子版国际标准刊号	1385-013X
出版地	AMSTERDAM
WOS关键词	CLIMATE ; CHINA ; EVOLUTION ; RAINFALL ; UPLIFT ; BASIN ; PRECIPITATION ; TEMPERATURES ; CIRCULATION ; PLATEAU
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000380419700007
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41210001, 41572011, 31370254] ; Recruitment Program of High-end Foreign Experts of the State Administration of Foreign Experts Affairs, P. R. China ; Key Project of Sun Yat-sen University for inviting foreign teachers ; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [15-55-53019] ; [0135-2014-0023] ; [0135-2014-0024] ; [0113-2014-0002]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/25042]
专题	系统与进化植物学国家重点实验室
作者单位	1.Spicer, Robert A.] Open Univ, Environm, Earth, Ecosyst, Milton Keynes MK7 6AA, Bucks, England 2.Sun Yat Sen Univ, Sch Life Sci, Guangdong Prov Key Lab Plant Resources, Guangzhou 510275, Guangdong, Peoples R China 3.Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China 4.Yang, Jian; Spicer, Teresa E. V.] Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 5.Russian Acad Sci, Inst Geol, Moscow 119017, Russia 6.Russian Acad Sci, Borissiak Paleontol Inst, Moscow 117647, Russia
推荐引用方式 GB/T 7714	Spicer, Robert A.,Yang, Jian,Herman, Alexei B.,et al. Asian Eocene monsoons as revealed by leaf architectural signatures[J]. EARTH AND PLANETARY SCIENCE LETTERS,2016,449:61-68.
APA	Spicer, Robert A..,Yang, Jian.,Herman, Alexei B..,Kodrul, Tatiana.,Maslova, Natalia.,...&Jin, Jianhua.(2016).Asian Eocene monsoons as revealed by leaf architectural signatures.EARTH AND PLANETARY SCIENCE LETTERS,449,61-68.
MLA	Spicer, Robert A.,et al."Asian Eocene monsoons as revealed by leaf architectural signatures".EARTH AND PLANETARY SCIENCE LETTERS 449(2016):61-68.