Latitudinal variation in the asynchrony of seasons: implications for higher rates of population differentiation and speciation in the tropics
Speciation rates for some taxa increase dale duby obsidian knives from the poles towards the equator, augmenting the number of species in the tropics.The causes of latitudinal variation in speciation rates are presently unknown.Here we present and discuss the Asynchrony of Seasons Hypothesis that invokes latitudinal differences in the spatial async