期刊
BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 81, 期 2, 页码 183-195出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1111/j.1095-8312.2003.00289.x
关键词
AFLP; comparative phylogeography; glaciation; migration; nunatak; Pleistocene; Ranunculus glacialis; refugia
There is considerable controversy concerning the fate of Alpine plants during Pleistocene glaciations. While some studies have found evidence for nunatak survival, others have explained the present genetic patterns by survival only in peripheral refugia. We investigated 75 populations of high alpine Ranunculus glacialis from its entire Alpine distribution. Phylogeographical analyses of AFLP data revealed four groups of populations. Two of them, located in the western Alps, were genetically isolated from each other and from the eastern groups, whereas the two eastern Alpine groups were genetically more similar to each other. This suggests longer isolation and/or lower levels of gene flow in the two western groups. As all groups are close to, or overlap with, presumed glacial refugia, invoking glacial survival on nunataks is unnecessary to explain the present genetic pattern. Similar to the phylogeographical patterns of R. glacialis, the previously investigated alpine Phyteuma globulariifolium and Androsace alpina, which are also confined to siliceous bedrock, showed strong geographical affinities to peripheral refugial areas and there were large-scale congruencies in the location of these refugia for all three species. (C) 2004 The Linnean Society of London.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据