DOI: 10.1073/pnas.1901656116
论文题名: Genomic evidence of survival near ice sheet margins for some; but not all; North American trees
作者: Bemmels J.B. ; Lacey Knowles L. ; Dick C.W.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期: 17 起始页码: 8431
结束页码: 8436
语种: 英语
英文关键词: Approximate Bayesian computation
; Eastern North America
; Glacial refugia
; Microrefugia
; Temperate trees
Scopus关键词: article
; Carya
; climate
; controlled study
; genus
; human
; ice sheet
; latitude
; longitude
; macrofossil
; nonhuman
; North America
; refugium
; simulation
; uncertainty
; Bayes theorem
; biological model
; classification
; ecosystem
; fossil
; genetics
; genomics
; ice cover
; North America
; phylogeography
; physiology
; plant genome
; Texas
; tree
; United States
; Bayes Theorem
; Climate
; Ecosystem
; Fossils
; Genome, Plant
; Genomics
; Ice Cover
; Models, Biological
; North America
; Phylogeography
; Southeastern United States
; Texas
; Trees
英文摘要: Temperate species experienced dramatic range reductions during the Last Glacial Maximum, yet refugial populations from which modern populations are descended have never been precisely located. Climate-based models identify only broad areas of potential habitat, traditional phylogeographic studies provide poor spatial resolution, and pollen records for temperate forest communities are difficult to interpret and do not provide species-level taxonomic resolution. Here we harness signals of range expansion from large genomic datasets, using a simulation-based framework to infer the precise latitude and longitude of glacial refugia in two widespread, codistributed hickories (Carya spp.) and to quantify uncertainty in these estimates. We show that one species likely expanded from close to ice sheet margins near the site of a previously described macrofossil for the genus, highlighting support for the controversial notion of northern microrefugia. In contrast, the expansion origin inferred for the second species is compatible with classic hypotheses of distant displacement into southern refugia. Our statistically rigorous, powerful approach demonstrates how refugia can be located from genomic data with high precision and accuracy, addressing fundamental questions about long-term responses to changing climates and providing statistical insight into longstanding questions that have previously been addressed primarily qualitatively. © 2019 National Academy of Sciences. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162290
Appears in Collections: 气候变化与战略
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作者单位: Bemmels, J.B., Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, United States, Department of Genetics, University of Georgia, Athens, GA 30602, United States; Lacey Knowles, L., Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, United States; Dick, C.W., Department of Ecology and Evolutionary Biology, University of Michigan, Ann Arbor, MI 48109, United States, Smithsonian Tropical Research Institute, Balboa Ancon, Panama
Recommended Citation:
Bemmels J.B.,Lacey Knowles L.,Dick C.W.. Genomic evidence of survival near ice sheet margins for some; but not all; North American trees[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(17)