Figure 5. Measurement of the fractal dimension
of the spatial distribution of the commonest species.
versus 
. The parameter values are 
, speciation rates 
(left panels), 
(middle panels), 
(right panels). In the upper panels the fraction of suitable habitats is set at 
, whereas in the lower panels 
. The symbols denote different values of 
: 
(circles), 
(diamonds) and 
(triangles). The data points represent an average over 
independent runs. The error bars correspond to one standard error.