Table 2.

Comparison of niche optima (niche shift) and ecological tolerance (niche breadth) between homoploid and heteroploid sites for groups of Senecio carniolicus

	Shift*	Breadth
Western diploids:
with tetraploids	0·105	0·053
with hexaploids	<0·001	0·581
Tetraploids:
with western diploids	0·493	0·594
with eastern diploids	0·001	0·765
with hexaploids	<0·001	0·750
Hexaploids:
with western diploids	0·001	0·471
with eastern diploids	0·042	0·447
with tetraploids	<0·001	0·601

* P values of significant differences after Dunn–Šidák correction for multiple comparisons are given in bold.