Correlation between mean density estimate against known density for all data sets. Line shows complete agreement between known and estimated density. Spearman's correlation coefficient shown in parentheses. Symbols denote spatial pattern of data set: Uniform – filled circle, Poisson – filled triangle, Clumped – open circle.
White et al. BMC Ecology 2008 8:6 doi:10.1186/1472-6785-8-6