Assessment of the Trophic Status of the South Lagoon of Tunis (Tunisia, Mediterranean Sea): Geochemical and Statistical Approaches

Table 3

Results of principal component analysis are shown as correlation values between the variables and the principal components for the first three principal components (PC1–PC3).

	PC1	PC2	PC3
T°C	−0.99	−0.07	0.08
pH	−0.04	0.81	−0.51
O2	0.91	0.31	−0.21
Salinity	−0.79	0.30	−0.16
SPM	−0.72	−0.26	−0.43
NH4^+	−0.89	−0.13	0.23
NO2^−	0.95	−0.02	−0.12
NO3^−	−0.37	0.71	0.18
Ortho-P	−0.68	0.44	0.25
Chl a	−0.14	0.31	−0.05
Pheo	−0.93	−0.06	0.16
Turbidity	−0.88	−0.08	−0.24
Transparency	0.45	0.27	0.68