Some figures from

Behavior at habitat boundaries can produce leptokurtic movement distributions

Morales, J. M. (2002). American Naturalist, 160(4): 531-538.

Examples of the type of landscapes used in the simulation experiment.
(A) Fine grained; (B) Coarse grained; (C) clustered; (D) fractal.
These examples correspond to a proportion of slow habitat equal to 0.5

landscapes


Changes in kurtosis with time for different landscape structures and composition for organisms crossing habitat boundaries freely (upper panel), and for asymmetric boundary reactions (lower panel). In asymmetric boundary reactions, individuals crossed freely from fast habitat to slow habitat but crossed with probability 0.1 from slow habitat to fast habitat. The values of kurtosis shown are averages of ten replicates of each combination of landscape structure and composition. The horizontal mesh are located at the critical values of kurtosis corresponding to significant departures from normality at p = 0.01.
(A) Fine grained; (B) Coarse grained; (C) Clustered; (D) Fractal landscapes.

kurtosis


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