Gene flow mediated by wind-borne pollen

Abstract

It is shown that an inverse power law adequately describes the dispersion of airborne pollen over short distances. Two consequences of such a model are that the range of gene flow is inversely proportional to the square root of the population density, and that it is dependent upon spatial pattern; the range of gene flow decreases as the average nearest neighbour distance decreases with or without concomitant population density increase. © 1973 The Genetical Society of Great Britain.