Prediction of fecal indicator organism concentrations in rivers: the shifting role of environmental factors under varying flow conditions

Environmental Sciences Europe

Table 2 Spearman’s rank correlations between environmental parameters and FIO concentrations in rivers Rhine and Moselle, respectively

	Water temp	pH	Conductivity	GSI_(3d-sum)	RAIN_(5d-sum)	O₂	Turbidity	Discharge
Rhine
E. coli	− 0.41	− 0.47	− 0.28	− 0.51	0.64	0.15	0.52	0.56
Enterococci	− 0.50	− 0.34	− 0.17	− 0.61	0.48	0.26	0.53	0.45
Coliphages	− 0.62	− 0.27	− 0.07	− 0.72	0.44	0.36	0.45	0.38
Moselle
E. coli	− 0.25	− 0.38	− 0.27	− 0.30	0.47	0.12	0.60	0.52
Enterococci	− 0.22	− 0.45	− 0.22	− 0.34	0.49	0.06	0.53	0.45
Coliphages	− 0.70	− 0.31	− 0.43	− 0.58	0.41	0.41	0.54	0.77

Correlation analyses were performed on the z-standardized data of the overall dataset including both sampling periods. Significant correlations (p < 0.05) are shown in italics