Pollen-Mediated Gene Flow along an Altitudinal Gradient
Matter, P., Kettle, C.J., Ghazoul, J. and Pluess, A.R. 2013. Extensive contemporary pollen-mediated gene flow in two herb species, Ranunculus bulbosus and Trifolium montanum, along an altitudinal gradient in a meadow landscape. Annals of Botany 111: 611-621.
From their analysis, Matter et al. discovered that "historic gene flow was extensive," with their data suggesting that "contemporary pollen flow is not limited across altitudes in either species." Given such, the authors final conclusion was that "high levels of pollen flow among altitudes in both R. bulbosus and T. montanum should facilitate exchange of genes which may enhance adaptive responses to rapid climate change."
Ellstrand, N.C. and Elam, D.R. 1993. Population genetic consequences of small population size: implications for plant conservation. Annual Review of Ecology and Systematics 24: 217-242.
Slatkin, M. 1985. Gene flow in natural populations. Annual Review of Ecology and Systematics 16: 393-430.
Slatkin, M. 1987. Gene flow and the geographic structure of natural populations. Science 236: 787-792.