Table 3. Ecological similarity between species pairs along individual niche axes and the joint niche.

Species pair	Feeding biology 1	Epi-hypogen distr. 2	Bio Clime 0.7	Bio Clime 0.8	Bio Clime 0.9	Joint niche 0.7	Joint niche 0.8	Joint niche 0.9
NKA-NKB	0.67	0.24	0.63*	0.69*	0.60*	0.55	0.57	0.54
NKA-NSA	0.33	0.89	0.70	0.74	0.75	0.80	0.80	0.80
NKA-NSB	0.33	0.87	0.41*	0.41*	0.38*	0.59	0.59	0.58
NKB-NSA	0.00	0.13	0.77	0.81	0.75	0.58	0.58	0.58
NKB-NSB	0.00	0.37	0.64*	0.58*	0.62*	0.43	0.40	0.41
NSA-NSB	1.00	0.76	0.45*	0.45*	0.44*	0.77	0.77	0.77

¹Overall morphological similarity calculated from Table 2, normalized values.

²Difference in preference for surface habitats, normalized values.

^{0.7, 0.8, 0.9} The values denote maximum Spearman’s rank correlation between BioClim variables allowed in calculation of Schoener’s D index. For calculations of the joint niche values of D index were standardized.

*A statistically significant difference in values of selected BioClim variables for the species pair.