Seasonal and Spatial Variation of Dissolved Oxygen and Nutrients in Padaviya Reservoir, Sri Lanka

Table 4

Principal component analysis of bottom water: pH, temperature, conductivity, dissolved oxygen, ammonia, reactive phosphate, nitrate, and nitrite.

Variable	PC1	PC2	PC3	PC4
pH	0.387	−0.312	0.353	−0.129
Temperature	0.128	0.674	0.105	0.250
Conductivity	−0.329	−0.115	0.742	−0.044
DO	0.367	0.170	0.343	−0.589
Ammonia	−0.431	0.129	−0.054	−0.488
Phosphate	−0.429	0.121	−0.220	−0.434
Nitrate	−0.277	−0.542	0.017	0.175
Nitrite	−0.380	0.285	0.381	0.340