Adaptiveness of dispersal.

<p>Adaptiveness was calculated as the difference between the invader fitness of each dispersing population of the inferior and that of their sedentary counterpart. Boundaries of positive and negative values are marked by lines. Note that the color scales are different for different dispersal modes. Parameters are (<i>k</i>₁, <i>k</i>₂) = (0.6, 0.3) for Environment 1 in (A, D, G), (0.8, 0.4) for Environment 2 in (B, E, H), and (1.4, 0.7) for Environment 3 in (C, F, I).