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on biodiversity levels.
Species-area relationships for different values of the Hurst exponent 
and fixed fraction of suitable habitats 
. The parameter values are 
; Hurst exponent: 
(circles), 
(diamonds), 
(triangles up), 
(triangles left) and 
(stars); and speciation rate: 
(left panel) and 
(right panel). The data points represent an average over 
independent runs. The error bars are smaller than the symbols.
