(a) Map of sites at which inventories were done. These represent a mix of point, line and polygon objects; (b) Histogram of areas the sites (log₁₀ x axis); (c) Histogram of number of species detected at each site (log₁₀ x axis); (d) Relationship between area of each site and number of species detected at the site (log₁₀ x and y axes), with a linear regression fitted through the data. Grey band indicates standard errors.