Table 2. Intertidal and subtidal echinoderm assemblages from 16x quadrat collections: Spearman Rank Correlation (rho) of abundance (N), residuals of abundance regressed against number of sampling quadrats (N_resid), expected number of taxa ES₅, and Taxonomic Distinctness index (Δ*) versus latitude (Lat).

	intertidal (n = 26)		subtidal (n = 31)
	rho	p-value	rho	p-value
N vs Lat	0.463	0.017	−0.236	0.166
Nresid vs Lat	0.322	0.051	−0.317	0.059
ES5 vs Lat	0.422	0.032	−0.059	0.734
Δ* vs Lat	0.377	0.063	−0.306	0.094

Bold print indicates significant correlations at α≤0.05.