Table 4.

D and I environmental niche overlap metrics for GLM and Maxent based niche overlap tests. Bold values indicate models with significant niche differences between P.clarkii and P.nantahala at α = 0.05.

	Non-bioclimatic variables	Bioclimatic variables	All environmental variables
GLM: D	0.013	0.033	0.001
GLM: I	0.089	0.166	0.026
Maxent: D	0.334	0.361	0.163
Maxent: I	0.627	0.659	0.371