Table 4.

Values of Pearson correlation coefficients between cyanobacteria biovolume (Cya), cyanotoxins (MCs, ANA), and water quality indicators.

Water Quality Indicators	Cya	ANA	dmMC-RR	MC-RR	dmMC-LR	MC-LR	∑MCs
pH	0.69	0.00	−0.27	0.71	−0.16	0.70	0.55
NH4	0.36	0.17	0.31	−0.06	−0.37	−0.11	−0.05
Dissolved oxygen	0.24	0.38	−0.46	−0.24	0.20	−0.26	−0.31
Ptot	0.43	−0.50	0.46	0.70	−0.40	0.70	0.68
Ntot	0.60	−0.22	0.00	0.91	−0.43	0.91	0.77
PO4	0.07	−0.51	0.52	0.49	−0.33	0.49	0.51
Color	0.03	−0.31	0.41	0.33	−0.29	0.32	0.32
Turbidity	0.84	0.01	−0.23	0.79	−0.27	0.81	0.61
Total suspension	0.84	0.22	−0.09	0.77	−0.18	0.74	0.69
Water temperature	0.15	0.22	−0.36	−0.06	−0.46	−0.02	−0.39
N:P	0.02	0.47	−0.40	0.04	−0.05	0.03	−0.08

Statistically significant correlation coefficients (p < 0.05) are marked in bold, CYA—cyanobacterial abundance, ANA—anatoxin-a, MCs—microcystins.