Isolation by phenology synergizes isolation by distance across a continuous landscape

Summary Pollen is generally dispersed over short distances, which promotes population genetic structure across continuous two‐dimensional space. Quantitative genetic variance in flowering time structures mating pools in the temporal dimension, at least with respect to the phenology loci. We asked if these two phenomena, isolation by distance ( IBD ) and isolation by phenology ( IBP ), synergistically promote genetic structure. We constructed an...