Correlograms from spatial autocorrelation analysis using the correlation coefficient <i>r</i> by Smouse & Peakall [29] and even distance classes.

<p>Shaded areas represent the 95% confidence interval obtained through random shuffling (1000 times) of individual geographic locations, black lines around mear <i>r</i> values represent 95% confidence intervals around mean r values generated by bootstrapping (1000 times) pair-wise comparisons within each distance class.