globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0090086
论文题名:
Genetic Structure and Diversity of the Endangered Fir Tree of Lebanon (Abies cilicica Carr.): Implications for Conservation
作者: Lara Awad; Bruno Fady; Carla Khater; Anne Roig; Rachid Cheddadi
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-2-27
卷: 9, 期:2
语种: 英语
英文关键词: Phylogeography ; Population genetics ; Lebanon ; Genetic polymorphism ; Conservation genetics ; Paleogenetics ; Genetic loci ; Biogeography
英文摘要: The threatened conifer Abies cilicica currently persists in Lebanon in geographically isolated forest patches. The impact of demographic and evolutionary processes on population genetic diversity and structure were assessed using 10 nuclear microsatellite loci. All remnant 15 local populations revealed a low genetic variation but a high recent effective population size. FST-based measures of population genetic differentiation revealed a low spatial genetic structure, but Bayesian analysis of population structure identified a significant Northeast-Southwest population structure. Populations showed significant but weak isolation-by-distance, indicating non-equilibrium conditions between dispersal and genetic drift. Bayesian assignment tests detected an asymmetric Northeast-Southwest migration involving some long-distance dispersal events. We suggest that the persistence and Northeast-Southwest geographic structure of Abies cilicica in Lebanon is the result of at least two demographic processes during its recent evolutionary history: (1) recent migration to currently marginal populations and (2) local persistence through altitudinal shifts along a mountainous topography. These results might help us better understand the mechanisms involved in the species response to expected climate change.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0090086&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/19336
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: University of Montpellier II, Institute of Evolutionary Sciences, CNRS UMR 5554, Montpellier, France;INRA, UR629, Ecologie des Forêts Méditerranéennes (URFM), Domaine St Paul, Avignon, France;Center for Remote Sensing, National Council for Scientific Research-Lebanon, Bir Hassan, Beirut, Lebanon;INRA, UR629, Ecologie des Forêts Méditerranéennes (URFM), Domaine St Paul, Avignon, France;University of Montpellier II, Institute of Evolutionary Sciences, CNRS UMR 5554, Montpellier, France

Recommended Citation:
Lara Awad,Bruno Fady,Carla Khater,et al. Genetic Structure and Diversity of the Endangered Fir Tree of Lebanon (Abies cilicica Carr.): Implications for Conservation[J]. PLOS ONE,2014-01-01,9(2)
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