Evidences of delayed size recovery in Araucaria angustifolia populations after post-glacial colonization of highlands in Southeastern Brazil
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Academia Brasileira de Ciências
2008
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| _version_ | 1876474267369996288 |
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| author | Valdir M. Stefenon |
| author_facet | Valdir M. Stefenon |
| contents | Evidences of delayed size recovery in Araucaria angustifolia populations after post-glacial colonization of highlands in Southeastern Brazil Valdir M. Stefenon Hermann Behling Oliver Gailing Reiner Finkeldey Multidisciplinaria (Ciencias Naturales y Exactas) paleobotany climate dynamics genetic bottleneck demographic history Araucaria angustifolia Up to date, little is known about the relationship between historical demography and the current genetic structure of A. Angus As a first effort towards overcoming this lack, microsatellite data scored in six populations and isozyme allele frequencies published for 11 natural stands of this species were analysed in order to assess molecular signatures of populations' demographic history. Signatures of genetic bottlenecks were captured in all analysed populations of southeastern Brazil. Among southern populations, signatures of small effective population size were observed in only three out of 13 populations. Southern populations likely experienced faster recovery of population size after migration onto highlands. Accordingly, current genetic diversity of the southern populations gives evidence of fast population size recovery. In general, demographic history of A. Angusmatches climatic dynamics of southern and southeastern Brazil during the Pleistocene and Holocene. Palynological records and reconstruction of the past climatic dynamics of southeastern and southern Brazil support the hypothesis of different population size recovery dynamics for populations from these regions. 2008 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713466005 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.80 |
| format | Artículo científico |
| id | redalyc_32713466005 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Evidences of delayed size recovery in Araucaria angustifolia populations after post-glacial colonization of highlands in Southeastern Brazil Valdir M. Stefenon Multidisciplinaria (Ciencias Naturales y Exactas) paleobotany climate dynamics genetic bottleneck demographic history Araucaria angustifolia Evidences of delayed size recovery in Araucaria angustifolia populations after post-glacial colonization of highlands in Southeastern Brazil Valdir M. Stefenon Hermann Behling Oliver Gailing Reiner Finkeldey Multidisciplinaria (Ciencias Naturales y Exactas) paleobotany climate dynamics genetic bottleneck demographic history Araucaria angustifolia Up to date, little is known about the relationship between historical demography and the current genetic structure of A. Angus As a first effort towards overcoming this lack, microsatellite data scored in six populations and isozyme allele frequencies published for 11 natural stands of this species were analysed in order to assess molecular signatures of populations' demographic history. Signatures of genetic bottlenecks were captured in all analysed populations of southeastern Brazil. Among southern populations, signatures of small effective population size were observed in only three out of 13 populations. Southern populations likely experienced faster recovery of population size after migration onto highlands. Accordingly, current genetic diversity of the southern populations gives evidence of fast population size recovery. In general, demographic history of A. Angusmatches climatic dynamics of southern and southeastern Brazil during the Pleistocene and Holocene. Palynological records and reconstruction of the past climatic dynamics of southeastern and southern Brazil support the hypothesis of different population size recovery dynamics for populations from these regions. 2008 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713466005 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.80 |
| title | Evidences of delayed size recovery in Araucaria angustifolia populations after post-glacial colonization of highlands in Southeastern Brazil |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) paleobotany climate dynamics genetic bottleneck demographic history Araucaria angustifolia |
| url | https://www.redalyc.org/articulo.oa?id=32713466005 |