NDLI: Genetic diversity of Enterolobium cyclocarpum in Colombian seasonally dry tropical forest: implications for conservation and restoration

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Genetic diversity of Enterolobium cyclocarpum in Colombian seasonally dry tropical forest: implications for conservation and restoration

Content Provider	Springer Nature Link
Author	Thomas, E. Gil Tobón, C. Gutiérrez, J. P. Alcázar Caicedo, C. Moscoso Higuita, L. G. Becerra, L. A. Loo, J. González, M. A.
Copyright Year	2016
Abstract	Enterolobium cyclocarpum is a characteristic legume tree species of seasonally dry tropical forests (SDTFs) of Mesoamerica and northern South America typically used in silvopastoral and agroforestry systems. Remaining populations of E. cyclocarpum in Colombia are severely fragmented owing to the highly degraded state of SDTF in the country, posing threats to both their in situ persistence and their usefulness as seed sources for future planting efforts. We genotyped E. cyclocarpum populations at nine sampling sites across a latitudinal gradient of SDTF in Colombia by means of eight nSSR markers to elucidate the species diversity distribution in the country. Our data suggest that a deep divide seems to have existed between Caribbean and Andean populations of E. cyclocarpum in Colombian SDTF that may date back to the last glacial maximum (~21,000 BP), or longer. However, we only found evidence of genetic differentiation between trees from the southern Cauca River valley and populations at more northern locations. All the latter populations showed signs of admixture which may be the result of human-influenced movement of germplasm, particularly after the introduction of cattle by European settlers. Most of the sampled sites showed heterozygosity scores close to Hardy–Weinberg expectations. Only the three southern-most populations displayed significantly positive values of inbreeding coefficient, potentially affecting their in situ maintenance and their use as seed sources. Based on our findings we identify priority areas for the in situ conservation of remaining E. cyclocarpum populations, and propose a strategy for sourcing of appropriate planting material for use in future tree planting efforts.
Starting Page	825
Ending Page	842
Page Count	18
File Format	PDF
ISSN	09603115
Journal	Biodiversity and Conservation
Volume Number	26
Issue Number	4
e-ISSN	15729710
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-12-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Paleodistribution Agroforestry Suitability modelling Enterolobium cyclocarpum Conservation Fragmentation Seed zones Biodiversity Ecology Conservation Biology/Ecology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecology Ecology, Evolution, Behavior and Systematics Nature and Landscape Conservation

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