Cyclic glaciations were frequent throughout the Quaternary and this affected species distribution and population differentiation worldwide.
Combining ecological niche modelling and phylogeographical analysis, this study by Lima et al. suggests that the distribution of Eugenia dysenterica (Myrtaceae) radiated outwards from the central region of the Cerrado biome, and that its genetic diversity pattern is due to climatic oscillations that occurred during the Quaternary. These findings are important for understanding the historical processes that leads to the current distribution of species.
Lima, J. S., Telles, M. P. C., Chaves, L. J., Lima-Ribeiro, M. S., & Collevatti, R. G. (2017). Demographic stability and high historical connectivity explain the diversity of a savanna tree species in the Quaternary. Annals of Botany, mcw257. https://doi.org/10.1093/aob/mcw257