Geographic Influence on Genetic Structure in the Widespread Neotropical Tree Simarouba amara (Simaroubaceae)

@article{Hardesty2010GeographicIO,
  title={Geographic Influence on Genetic Structure in the Widespread Neotropical Tree Simarouba amara (Simaroubaceae)},
  author={Britta Denise Hardesty and Christopher W. Dick and James L Hamrick and Bernd Degen and Stephen P. Hubbell and Eldredge Bermingham},
  journal={Tropical Plant Biology},
  year={2010},
  volume={3},
  pages={28-39}
}
This study aimed to assess the population genetic structure of a widespread Neotropical tree species, Simarouba amara, at local, regional and continental spatial scales. We used five microsatellite loci to examine genetic variation in 14 natural populations (N = 478 individuals) of this vertebrate-dispersed rain forest tree species in Panama, Ecuador, and French Guiana. Estimates of genetic differentiation (Fst and Rst) were significant among all but one population pair and global… 

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References

SHOWING 1-10 OF 67 REFERENCES

Population genetic structure of mahogany (Swietenia macrophylla King, Meliaceae) across the Brazilian Amazon, based on variation at microsatellite loci: implications for conservation

The finding of local differentiation among Amazonian mahogany populations underscores the need for in situ conservation of multiple populations of S. macrophylla across its distribution in the Brazilian Amazon and indicates the importance of maintaining populations in their diverse habitats, especially in areas with mosaics of topography and soil.

Regional and Population-scale Influences on Genetic Diversity Partitioning within Costa Rican Populations of the Pioneer Tree Vochysia ferruginea Mart

Overall population differentiation was low and within-population diversity high, which fits with the overall pattern of population genetic structure expected for a widespread, outcrossed tropical tree, however genetic diversity was significantly lower and differentiation higher for recently colonised and disturbed populations compared to that at more established sites.

Spatial genetic structure of Simarouba amara Aubl. (Simaroubaceae), a dioecious, animal-dispersed Neotropical tree, on Barro Colorado Island, Panama

The relatively weak genetic structure of S. amara, in comparison to other recent studies, may be explained by pollen and seed dispersal over the 50 ha plot, overlapping seed shadows, and postrecruitment mortality.

Population genetic structure of the endangered tropical tree species Caryocar brasiliense, based on variability at microsatellite loci

The population genetic structure of the endangered tropical tree species Caryocar brasiliense is reported, based on variability at 10 microsatellite loci, suggesting that identity by state and identity by descent have diverged in these populations.

Population genetics of Cordia alliodora (Boraginaceae), a neotropical tree. 1. Genetic variation in natural populations

It is indicated that in situ and ex situ conservation should accord high priority to the dry zone populations of Cordia alliodora; furthermore, conservation of this widespread species would require preservation of multiple populations.

Genetic structure of Mesoamerican populations of Big‐leaf mahogany (Swietenia macrophylla) inferred from microsatellite analysis

The results of this study demonstrate greater phylogeographic structure than has been found across Amazon basin S. macrophylla, suggesting a relatively complex Mesoamerican biogeographic history and lead to the prediction that other Central American trees will show similar patterns of regional differentiation.

Geographic patterns of genetic diversity in Poulsenia armata (Moraceae): implications for the theory of Pleistocene refugia and the importance of riparian forest

The distribution of genetic diversity, based on RAPD markers, among ten populations of Poulsenia armata (Miq.) Standl.

The Complex Biogeographic History of a Widespread Tropical Tree Species

  • C. DickM. Heuertz
  • Environmental Science
    Evolution; international journal of organic evolution
  • 2008
Both DNA sequence and nSSR data reflect contrasting demographic histories in lower Mesoamerica and Amazonia, and Amazon populations show weak phylogeographic structure and deviation from drift–mutation equilibrium indicating recent population expansion.

Chloroplast DNA Microsatellites Reveal Contrasting Phylogeographic Structure in Mahogany (Swietenia macrophylla King, Meliaceae) from Amazonia and Central America

It is suggested that the frequent occurrence of hurricanes in Central America, the differences in the glacial histories and in the duration and intensity of anthropogenic disturbance during the late Holocene may have played important roles in the geographic structuring of cpDNA lineages in the two regions.

Genetic Diversity of a Tropical Tree Species, Shorea leprosula Miq. (Dipterocarpaceae), in Malaysia: Implications for Conservation of Genetic Resources and Tree Improvement1

Genetic diversity and population genetic structure of Shorea leprosula was investigated using seven natural populations distributed throughout Peninsular Malaysia and one natural population from
...