Table 2. Results of STRUCTURE analyses showing log-likelihood estimation of cluster number for K=1–5–(10).

Data set	K	1	2	3	4	5	6	7	8	9	10
Mixed-ploidy population	ln Pr(X|K)	−3511	−3393	−3817	−3632	−3513
	Δ ln-likelihood	−118	0	−424	−239	−120
	Posterior Pr(K)	<0.001	>0.999	<0.001	<0.001	<0.001
Contact zone	ln Pr(X|K)	−4479	−4081	−4131	−4185	−4200	−4284	−4378	−4293	−4328	−4412
	Δ ln-likelihood	−398	0	−49	−103	−119	−202	−297	−212	−247	−331
	Posterior Pr(K)	<0.001	>0.999	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
Europe	ln Pr(X|K)	−6594	−5979	−5985	−6166	−6154	−5896	−6363	−6270	−6195	−6197
	Δ ln-likelihood	−698	−83	−89	−270	−258	0	−467	−374	−299	−301
	Posterior Pr(K)	<0.001	<0.001	<0.001	<0.001	<0.001	>0.999	<0.001	<0.001	<0.001	<0.001

The results are shown for the small (mixed-ploidy population), intermediate (contact zone) and large (Europe) spatial scales. The favored K values are in bold