DOI: 10.1016/j.palaeo.2016.02.037
论文题名: The rise and demise of Podozamites in east Asia—An extinct conifer life style
作者: Pole M. ; Wang Y. ; Bugdaeva E.V. ; Dong C. ; Tian N. ; Li L. ; Zhou N.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 464 起始页码: 97
结束页码: 109
语种: 英语
英文关键词: Conifer
; Cretaceous
; Deciduous
; Ecology
; Fire
; Jurassic
; Triassic
英文摘要: In the Late Triassic-Early Jurassic, forests dominated by Podozamites—an apparently deciduous, shoot-dropping conifer with broad, multi-veined leaves—were extensive in what were the mid-latitudes of eastern Asia. Podozamites was the only conifer in many forests of this region, and at times appeared to have formed an almost mono-specific vegetation. Podozamites appears to have been little-effected through the Triassic-Jurassic transition, but responded to climate changes later in the Jurassic. The Chinese region progressively dried through the Middle Jurassic and aridity had developed in some areas by the Late Jurassic-Early Cretaceous. The centre of distribution of Podozamites shifted north, to the Siberian region, where conditions remained wet. There, it typically coexisted with conifers having a diverse range of smaller leaf morphologies. By the late Albian angiosperms had arrived in the Siberian area and risen to dominance. Some time after this event, Podozamites became extinct. This is significant, as it represents the permanent extinction of a unique lifestyle—a deciduous, broad-leaved and multi-veined conifer. The broad history of Podozamites raises some interesting issues: 1. The existence of a large, dominantly deciduous vegetation at mid-latitudes in the Late Triassic-Early Jurassic is little discussed.2. It is unexpected that as broad-leaved angiosperms took over, amongst the conifers it was the broad leaved, multi-veined Podozamites that became extinct. This is the morphology that might have been expected to compete with the apparently more shade-forming angiosperms. Instead, it was the smaller leaved and single-veined conifers that remained to coexist with the angiosperms. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68169
Appears in Collections: 过去全球变化的重建
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作者单位: Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS), Nanjing Institute of Geology and Palaeontology, CAS, Nanjing, China; College of Paleontology, Shenyang Normal University, Shenyang, China; Institute of Biology and Soil Science, Far East Branch, Russian Academy of Sciences, pr. Stoletiya Vladivostoka 159, Vladivostok, Russian Federation; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Pole M.,Wang Y.,Bugdaeva E.V.,et al. The rise and demise of Podozamites in east Asia—An extinct conifer life style[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,464