Table 4.

Principal components analysis—loadings of 11 environmental variables recorded in the field, using Eigenvalue-minus-one criterion^*

	Factor 1	Factor 2	Factor 3	Factor 4	Factor 5
Alkalinity	0.435	−0.540	−0.232	−0.277	−0.050
Temp	−0.297	0.597	−0.202	−0.264	−0.129
Conductivity	0.917	0.054	0.023	0.038	0.004
Salinity	0.865	−0.073	0.034	−0.126	0.013
Turbidity	0.303	0.469	−0.274	0.244	−0.547
Shade	−0.140	−0.148	−0.110	0.837	−0.123
Movement	0.083	0.079	−0.140	0.174	0.880
Algal Density	−0.147	−0.179	0.806	−0.120	0.030
Vegetation	0.186	0.045	0.856	0.106	−0.093
Lux	0.180	0.811	−0.067	−0.228	0.078
Canopy	0.026	−0.081	0.093	0.709	0.341

^*Items in bold depict significant loadings.