Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai-Tibetan Plateau and adjacent areas

doi:10.1111/jse.12452

	Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai-Tibetan Plateau and adjacent areas
	Xu, Cong-Li 1,2; Su, Tao 1,2; Huang, Jian 1; Huang, Yong-Jiang 3; Li, Shu-Feng 1; Zhao, Yi-Shan 4; Zhou, Zhe-Kun1,3
通讯作者	Su, Tao(sutao@xtbg.org.cn)
	2019-03-01
发表期刊	JOURNAL OF SYSTEMATICS AND EVOLUTION
ISSN	1674-4918
卷号	57 期号:2 页码:169-179
摘要	The uplift of the Qinghai-Tibetan Plateau dramatically changed the regional topography and climate, profoundly impacting the distribution of many plant lineages. Plant responses to environmental changes are particularly prominent in lineages that require ecological factors differentiated from those present before the uplift of the QTP. Two fossil occurrences of Christella H. Lev., Fl. Kouy-Tcheou (Thelypteridaceae), a fern genus now distributed mainly at low elevations of the pantropics with warm and moist habitats, are described based on fossilized Cenozoic leaf fronds recovered from SW China: late Paleocene Christella nervosa (J. R. Tao) C. L. Xu, T. Su & Z. K. Zhou comb. nov. found in Liuqu, southern Tibet and middle Miocene Christella sp. recovered from the Jinggu Basin in western Yunnan. The frond fossils from both sites share key morphological characteristics that diagnose these fossils as Christella. After detailed comparisons, we further clarified Christella papilio (C. Hope) Holttum, a species distributed in warm, humid habitats at altitudes no more than 1300 m, as the nearest living relative of C. nervosa. This finding suggested that southern Tibet had not reached its present elevation during the late Paleocene (ca. 56 Ma). We propose that the uplift, accompanied by severe cooling and aridification after the late Paleocene, caused the disappearance of Christella in southern Tibet, whereas paleoenvironmental conditions enabled the genus to survive in Yunnan. Our study provides the first example of distributional constraints of ferns in SW China in response to paleoenvironmental changes in the Qinghai-Tibetan Plateau and nearby areas.
关键词	biodiversity Cenozoic Christella fern fossil Qinghai-Tibetan Plateau
DOI	10.1111/jse.12452
收录类别	SCI
语种	英语
WOS记录号	WOS:000462163000008
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/67686
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
通讯作者	Su, Tao
作者单位	1.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, Kunming 650201, Yunnan, Peoples R China 4.Hunan Univ Sci & Technol, Fac Elect & Mech Engn, Xiangtan 411201, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Xu, Cong-Li,Su, Tao,Huang, Jian,et al. Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai-Tibetan Plateau and adjacent areas[J]. JOURNAL OF SYSTEMATICS AND EVOLUTION,2019,57(2):169-179.
APA	Xu, Cong-Li.,Su, Tao.,Huang, Jian.,Huang, Yong-Jiang.,Li, Shu-Feng.,...&Zhou, Zhe-Kun.(2019).Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai-Tibetan Plateau and adjacent areas.JOURNAL OF SYSTEMATICS AND EVOLUTION,57(2),169-179.
MLA	Xu, Cong-Li,et al."Occurrence of Christella (Thelypteridaceae) in Southwest China and its indications of the paleoenvironment of the Qinghai-Tibetan Plateau and adjacent areas".JOURNAL OF SYSTEMATICS AND EVOLUTION 57.2(2019):169-179.

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