Table 3.

Comparison of population differentiation (F_ST) in sea/river and lake ecotypes within large drainages or coastal drainage areas comprising proximate smaller rivers.

		Sea/river-type			Lake-type
Geographic region*	Drainage or coastal area	npop	FST	P	npop	FST	P
Northern	Alsek River	2	<0.01	0.42	3	0.78	<0.05
	Taku River	4	0.02	0.20	3	0.56	<0.001
	Stikine River	3	−0.02	0.74	3	0.46	<0.001
	Nass River	3	0.09	<0.01	4	0.23	<0.001
	Skeena River	3	0.08	<0.05	9	0.16	<0.001
Coastal	BC Central Coast†	3	0.11	<0.01	9	0.27	<0.001
	West Vancouver Island‡	2	0.24	<0.001	5	0.57	<0.001
	Lower Fraser River	2	0.60	<0.001	5	0.40	<0.001
Southern	Skagit River	2	−0.05	0.80	0	–	–
	Washington Coast§	3	−0.04	0.95	3	0.08	0.17

Bold font indicates that F_ST is statistically > 0.

^*Regions putatively colonized from different glacial refuges (Wood 1995, Wood et al. unpublished data).

^†Mainland coast from Kemano River south to Klinaklini River; population numbers 64 to 76 Supplementary Table 1.

^‡West coast of Vancouver Island from Zeballos River south to Hobiton Lake; population numbers 45 to 51 Supplementary Table 1.

^§Puget Sound (including Skagit and Nooksack rivers) and Olympic Peninsula; population numbers 9 to 15 Supplementary Table 1.