Table 2. Principal component loadings.

	PC 1	PC 2	PC 3	PC 4	PC 5
Eigenvalue	2.12	1.50	1.01	0.87	0.69
% Variation	30.3	21.4	14.4	12.5	9.9
Variables:
Area	-0.55	-0.491	0.062	-0.787	-0.351
Slope	-0.339	0.473	0.461	-0.335	0.103
Elevation	-0.547	0.006	0.458	0.106	0.096
Groundwater	-0.436	-0.084	-0.568	-0.053	0.275
Temperature	0.493	0.280	0.218	-0.002	-0.275
Precipitation	0.146	0.579	-0.343	-0.484	0.260
Habitat condition	-0.358	0.340	-0.294	0.140	-0.799

Principal component loadings for the full PCA on all removed dams.