Figure 3.

The preferred speed-step length relationship in open and forest environments. Panels (a) and (b) plot the preferred dimensionless speed (v)-dimensionless step length (s) relationship (equation (1.1)) in the Batek and Tsimane, respectively. Data points represent individual means. Orange circles indicate the open (unconstrained) environment, while green triangles indicate the forest (constrained) environment. The curves were parameterized using the entire dataset. (Online version in colour.)