Intercontinental disjunctions between eastern Asia and western North America in vascular plants highlight the biogeographic importance of the Bering land bridge from late Cretaceous to Neogene  

作　　者：Jun Wen Ze-Long Nie Stefanie M. Ickert-Bond 

机构地区：[1]Department of Botany, MRC-166, Smithsonian Institution, PO Box 37012, Washington, DC 2o013-7012, USA [2]Key Laboratory of Plant Resources Conservation and Utilization, College of Biology and Environmental Sciences, Jishou University, Jishou 416000, Hunan, China [3]Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming institute of Botany, Chinese Academy of Sciences, Kunming 650201,China [4]UA Museum of the North and Department of Biology and Wildlife, University of Alaska Fairbanks, 907 Yukon Dr., PO Box 756960, Fairbanks,AK 99775-6960, USA

出　　处：《Journal of Systematics and Evolution》2016年第5期469-490,共22页植物分类学报（英文版）

摘　　要：This review shows a close biogeographic connection between eastern Asia and western North America from the late Cretaceous to the late Neogene in major lineages of vascular plants （flowering plants, gymnosperms, ferns and lycophytes）. Of the eastern Asian-North American disjuncts, conifers exhibit a high proportion of disjuncts between eastern Asia and western North America. Several lineages of ferns also show a recent disjunct pattern in the two areas. In flowering plants, the pattern is commonly shown in temperate elements between northeastern Asia and northwestern North America, as well as elements of the relict boreotropical and Neogene mesophytic and coniferous floras. The many cases of intercontinental biogeographic disjunctions between eastern Asia and western North America in plants supported by recent phylogenetic analyses highlight the importance of the Bering land bridge and/or the plant migrations across the Beringian region from the late Cretaceous to the late Neogene, especially during the Miocene. The Beringian region has permitted the filtering and migration of certain plant taxa since the Pliocene after the opening of the Bering Strait, as many conspecific taxa or closely related species occur on both sides of Beringia.This review shows a close biogeographic connection between eastern Asia and western North America from the late Cretaceous to the late Neogene in major lineages of vascular plants （flowering plants, gymnosperms, ferns and lycophytes）. Of the eastern Asian-North American disjuncts, conifers exhibit a high proportion of disjuncts between eastern Asia and western North America. Several lineages of ferns also show a recent disjunct pattern in the two areas. In flowering plants, the pattern is commonly shown in temperate elements between northeastern Asia and northwestern North America, as well as elements of the relict boreotropical and Neogene mesophytic and coniferous floras. The many cases of intercontinental biogeographic disjunctions between eastern Asia and western North America in plants supported by recent phylogenetic analyses highlight the importance of the Bering land bridge and/or the plant migrations across the Beringian region from the late Cretaceous to the late Neogene, especially during the Miocene. The Beringian region has permitted the filtering and migration of certain plant taxa since the Pliocene after the opening of the Bering Strait, as many conspecific taxa or closely related species occur on both sides of Beringia.

关 键 词：Bering land bridge BIOGEOGRAPHY DISJUNCTION disjuncts eastern Asia western North America. 

分 类 号：Q0[生物学]