Effects of Freshwater Pollution on the Genetics of Zebra Mussels (Dreissena polymorpha) at the Molecular and Population Level

Table 2

Results of water and sediment chemical analyses.

Water parameters	Cl2	Dp	WcW	ZaW	Sediment parameters	WcS
pH	8.07	7.74	7.87	7.20	Co (mg/kg)	10.4
O2 (mg/L)	8.68	4.62	4.27	NA	As (mg/kg)	<0.05
Cr (𝜇g/L)	<2	<2	<2	19	Cr (mg/kg)	804
Cu (𝜇g/L)	<20	<20	<20	36	Cu (mg/kg)	242
Zn (𝜇g/L)	<20	<20	<20	88	Zn (mg/kg)	1300
Ni (𝜇g/L)	<5	<5	<5	17	Ni (mg/kg)	44.8
Fe (𝜇g/L)	314	126	99.2	1110	Hg (mg/kg)	1.36
Pb (𝜇g/L)	<5	<5	<5	7	Pb (mg/kg)	218
Cd (𝜇g/L)	<1	<1	<1	<1	Cd (mg/kg)	<3
Mn (𝜇g/L)	24.9	38.8	58.5	84	Mo (mg/kg)	42.4
PCB (𝜇g/L)	<0.02	<0.02	<0.02	<2.0	PCB (mg/kg)	<5
Total PAH (𝜇g/L)	<0.005	<0.005	<0.005	0.255	Total PAH (mg/kg)	27.8
					Mineral-oil
					hydrocarbons (mg/kg)	176.6

Concentrations of abiotic parameters and contaminants of four water samples and one sediment sample are depicted. Cl2: reference site for water analyses in river Drava (Figure 1), Dp: contaminated site in river Drava (Figure 1), WcW: water sample of the wastewater treatment plant effluent channel that flows into the river Drava, ZaW: water sample of municipal wastewater in Zagreb used in the laboratory experiment, and WcS: sediment sample of wastewater treatment plant effluent channel that flows into the river Drava (W.C., Figure 1).