Small mammal tooth enamel carbon isotope record of C-4 grasses in late Neogene China

IVPP-IR > 中科院古脊椎所（2000年以后）

	Small mammal tooth enamel carbon isotope record of C-4 grasses in late Neogene China
	Arppe, Laura 1; Kaakinen, Anu 2; Passey, Benjamin H.3; Zhang, Zhaoqun4 ; Fortelius, Mikael 2
	2015-10-01
发表期刊	GLOBAL AND PLANETARY CHANGE
卷号	133 期号:0 页码:288-297
文章类型	Article
摘要	The spatiotemporal pattern of the late Cenozoic spread of C-4 vegetation is an important indicator of environmental change that is intertwined with the uplift of the Himalaya and Tibetan Plateau, and the development of the East Asian monsoons. To explore the spread of C-4 vegetation in China and shed new light on regional climatic evolution, we measured delta C-13 values of more than 200 small mammal teeth (primarily rodents and lagomorphs) using a laser ablation isotope ratio mass spectrometry approach. Small mammals are highly sensitive indicators of their environment because they have limited spatial ranges and because they have minimal time-averaging of carbon isotope signatures of dietary components. The specimens originate from four classic Late Miocene fossil localities, Lufeng, Yuanmou, Lingtai, and Ertemte, along a southwest-northeast transect from Yunnan Province to Inner Mongolia. In Yunnan (Lufeng, Yuanmou) and on the Loess Plateau (Lingtai), the small mammal delta C-13 values record nearly pure C-3 ecosystems, and mixed but C-3-based ecosystems, respectively, in agreement with previous studies based on carbon isotopes of large herbivores and soil carbonates. In Inner Mongolia, the micromammalian tooth enamel delta C-13 record picks up the presence of C-4 vegetation where large mammal samples do not, indicating a mixed yet C-3-dominated ecosystem at similar to 6 Ma. As a whole, the results support a scenario of northward increasing C-4 grass abundance in a pattern that mirrors northward decreasing precipitation of the summer monsoon system. The results highlight differences between large and small mammals as indicators of C-4 vegetation in ancient ecosystems, particularly the ability of small mammal delta C-13 values to detect the presence of minor components of the vegetation structure. (C) 2015 Elsevier B.V. All rights reserved.
关键词	C-4 Vegetation Carbon Isotopes Laser Ablation Tooth Enamel Rodent East Asian Monsoon
WOS标题词	Science & Technology ; Physical Sciences
关键词[WOS]	RED CLAY SEQUENCE ; ASIAN SUMMER MONSOONS ; LATE MIOCENE ; STABLE-ISOTOPE ; LOESS PLATEAU ; GREAT-PLAINS ; ENVIRONMENTAL-CHANGE ; FOSSIL MAMMALS ; NORTH-AMERICA ; TIBETAN PLATEAU
收录类别	SCI
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000365053700025
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/7181
专题	中科院古脊椎所（2000年以后）
作者单位	1.Univ Helsinki, Finnish Museum Nat Hist, FIN-00014 Helsinki, Finland 2.Univ Helsinki, Dept Geosci & Geog, FIN-00014 Helsinki, Finland 3.Johns Hopkins Univ, Dept Earth & Planetary Sci, Baltimore, MD 21218 USA 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Arppe, Laura,Kaakinen, Anu,Passey, Benjamin H.,et al. Small mammal tooth enamel carbon isotope record of C-4 grasses in late Neogene China[J]. GLOBAL AND PLANETARY CHANGE,2015,133(0):288-297.
APA	Arppe, Laura,Kaakinen, Anu,Passey, Benjamin H.,Zhang, Zhaoqun,&Fortelius, Mikael.(2015).Small mammal tooth enamel carbon isotope record of C-4 grasses in late Neogene China.GLOBAL AND PLANETARY CHANGE,133(0),288-297.
MLA	Arppe, Laura,et al."Small mammal tooth enamel carbon isotope record of C-4 grasses in late Neogene China".GLOBAL AND PLANETARY CHANGE 133.0(2015):288-297.

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