Genetic diversity of the rain tree (Albizia saman ) in Colombian seasonally dry tropical forest for informing conservation and restoration interventions

Ecology and Evolution
Carolina Adriana Aguirre-MoralesMailyn Adriana González

Abstract

Albizia saman is a multipurpose tree species of seasonally dry tropical forests (SDTFs) of Mesoamerica and northern South America typically cultivated in silvopastoral and other agroforestry systems around the world, a trend that is bound to increase in light of multimillion hectare commitments for forest and landscape restoration. The effective conservation and sustainable use of A. saman requires detailed knowledge of its genetic diversity across its native distribution range of which surprisingly little is known to date. We assessed the genetic diversity and structure of A.saman across twelve representative locations of SDTF in Colombia, and how they may have been shaped by past climatic changes and human influence. We found four different genetic groups which may be the result of differentiation due to isolation of populations in preglacial times. The current distribution and mixture of genetic groups across STDF fragments we observed might be the result of range expansion of SDTFs during the last glacial period followed by range contraction during the Holocene and human-influenced movement of germplasm associated with cattle ranching. Despite the fragmented state of the presumed natural A. saman stands we sampled, we did n...Continue Reading

References

Dec 1, 1973·Proceedings of the National Academy of Sciences of the United States of America·M Nei
Feb 5, 2000·Nature Biotechnology·M Schuelke
Jun 24, 2004·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Francis E MayleMark B Bush
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Aug 30, 2014·PloS One·Tomislav HenglMaria Ruiperez Gonzalez

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Methods Mentioned

BETA
PCR

Software Mentioned

saman
STRUCTURE HARVESTER
ArcMap
MIROC
R packages
WorldClim
STRUCTURE
poppr
MAXENT
R

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