Table 3. Intertidal and subtidal echinoderm assemblages from 100x 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 = 52)		subtidal (n = 36)
	rho	p-value	rho	p-value
N vs Lat	−0.253	0.070	−0.215	0.208
Nresid vs Lat	−0.205	0.145	−0.280	0.115
ES5 vs Lat	−0.271	0.052	−0.284	0.093
Δ* vs Lat	−0.185	0.190	−0.290	0.086