Table 2.

Within-river genetic differentiation among Eastern Sand Darter sample sites from three different drainages (Ohio, Great Lakes, and St. Lawrence; note the Wabash drainage is not shown as each river had only one sampled site). Within each river, pairwise F_ST values (below diagonal) were calculated among sites. Significant results for pairwise F_ST estimates were also calculated, and significant results (after Bonferroni correction) are indicated in boldface type

Drainage
		LM1	LM2	LM3
Ohio drainage	LM1	–
	LM2	0.007	–
	LM3	0.003	–0.002	–
		HRc1	HRc2	HRm1	HRm2	HRm3
	HRc1	–
	HRc2	0.009	–
	HRm1	–0.003	0.020	–
	HRm2	0.005	0.021	0.001	–
	HRm3	0.003	0.015	–0.002	0.001	–
		SC1	SC2	SC3
	SC1	–
	SC2	0.005	–	N
	SC3	0.003	–0.003	–
		THu1	THu2	THu3	THd1	THd2	THd3
Great Lakes	THu1	–
	THu2	0.004	–
	THu3	0.003	0.015	–
	THd1	0.003	0.005	0.002	–
	THd2	0.001	0.009	0.000	0.000	–
	THd3	0.008	0.006	–0.003	–0.002	–0.007	–
		GRu1	GRu2	GRu3	GRL1	GRL2	GRL3
	GRu1	–
	GRu2	–0.006	–
	GRu3	0.005	–0.005	–
	GRL1	0.009	–0.002	–0.002	–
	GRL2	0.004	–0.005	–0.004	0.001	–
	GRL3	0.005	–0.002	–0.008	0.002	–0.005	–
		SJ	MA1	MA2	MA3	SM
	SJ	–
	MA1	0.001	–
	MA2	0.001	–0.001	–
	MA3	0.007	0.000	0.012	–
	SM	0.012	0.009	0.014	0.024	–
		RR1	RR2
St. Lawrence R.	RR1	–
	RR2	0.005	–

Bold indicates significance following Bonferroni correction (P < 0.01, 0.005, 0.01, 0.003, 0.003, 0.005, 0.05) below diagonal.

Bold indicates significant pairwise exact test (P < 0.05) above diagonal.