DOI: 10.1111/gcb.13685
论文题名: Climatic changes can drive the loss of genetic diversity in a Neotropical savanna tree species
作者: Lima J.S. ; Ballesteros-Mejia L. ; Lima-Ribeiro M.S. ; Collevatti R.G.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
语种: 英语
英文关键词: Bayesian clustering
; Cerrado
; Conservation genetics
; Ecological niche modelling
; Global warming
; Land use
; Landscape genetics
; Simulation
英文摘要: The high rates of future climatic changes, compared with the rates reported for past changes, may hamper species adaptation to new climates or the tracking of suitable conditions, resulting in significant loss of genetic diversity. Trees are dominant species in many biomes and because they are long-lived, they may not be able to cope with ongoing climatic changes. Here, we coupled ecological niche modelling (ENM) and genetic simulations to forecast the effects of climatic changes on the genetic diversity and the structure of genetic clusters. Genetic simulations were conditioned to climatic variables and restricted to plant dispersal and establishment. We used a Neotropical savanna tree as species model that shows a preference for hot and drier climates, but with low temperature seasonality. The ENM predicts a decreasing range size along the more severe future climatic scenario. Additionally, genetic diversity and allelic richness also decrease with range retraction and climatic genetic clusters are lost for both future scenarios, which will lead genetic variability to homogenize throughout the landscape. Besides, climatic genetic clusters will spatially reconfigure on the landscape following displacements of climatic conditions. Our findings indicate that climate change effects will challenge population adaptation to new environmental conditions because of the displacement of genetic ancestry clusters from their optimal conditions. Copyright © 2017 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61134
Appears in Collections: 影响、适应和脆弱性
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作者单位: Laboratório de Genética and Biodiversidade, Instituto de Ciências Biológicas Universidade Federal de Goiás Goiânia Brazil; Laboratório de Macroecologia Universidade Federal de Goiás Jataí Brazil
Recommended Citation:
Lima J.S.,Ballesteros-Mejia L.,Lima-Ribeiro M.S.,et al. Climatic changes can drive the loss of genetic diversity in a Neotropical savanna tree species[J]. Global Change Biology,2017-01-01