Contribution to the Macrophytic Typology of Belgian Reference Watercourses

Table 3

Medians of physicochemical parameters of the site clusters defined by the multiple factorial analysis (Cl1: Condroz and Famenne and Cl2: Lorraine, Cl3 to 6: Arden) and prevailing geology.

Cluster; (MFA)	(mgN/l)	Ca^2+ (mg/l)	Conductivity (µS/cm)	Mg^2+ (mg/l)	(mgN/l)	(mgN/l)	(mgP/l)	pH	Total alkalinity (°Fr)	Prevailing geology
Cl1	0.037	35.1	254	5.3	2.626	0.012	0.040	7.75	8.50	Geology 5
Cl2	0.021	79.1	394	2.7	1.930	0.010	0.010	8.19	17.73	Geology 6
Cl3	0.024	2.9	60	1.4	0.380	0.010	0.008	6.06	0.46	Geology 1
Cl4	0.020	7.5	88	3.0	2.609	0.010	0.016	7.38	1.95	Geology 3
Cl5	0.026	10.5	139	3.1	2.250	0.010	0.024	7.60	2.19	Geology 2
Cl6	0.017	4.2	57	2.1	0.976	0.010	0.005	7.23	0.75	Geology 3