Table 1.

Demographic and molecular clock model comparison analyzed by investigated Akaike’s information criterion (AICM)

	OTU 4		OTU 9
	AICM	S.E.	AICM	S.E.
Model A	7454.385	±0.272	1516.732	±0.038
Model B	7473.122	±0.238	1520.227	±0.040
Model C	7465.633	±0.194	1529.998	±0.091
Model D	7476.156	±0.152	1518.917	±0.072

Model A: The haplotypes from the ice core were assigned to 12,500 years before present

Model B: The haplotypes from the ice core were assigned to 0 years before present, and randomly selected N haplotypes from modern glacier surface samples were assigned to 12,500 cal. yr BP, where N is the number of haplotypes from the ice core sample

Model C: The haplotypes from the ice core were assigned to 0 years before present, k and all haplotypes from current glacier surface were assigned to 12,500 years before present

Model D: All haplotypes were assigned to be modern (0 years before present)