Table 2. Two-way ANOVA of estimates of Salmo relative abundance, grouped by site and sampling method.

ANOVA parameter	Sum of squares	df	Mean square	F	P
Site	0.547559	1	0.547559	55.86	1.189E-10
Sample type	0.0265163	1	0.0265163	2.705	0.1042
Interaction	0.0015004	1	0.0015004	0.1531	0.6967
Within	0.735201	75	0.00980268
Total	1.29862	78