Evaluating environmental impact of STPs situated on streams in the Czech Republic: an integrated approach to biomonitoring the aquatic environment.
Sewage water treatment plants (STPs) are frequently associated with the release of xenobiotics and, consequently, with biological responses of fish to these substances. The impact of three STPs situated on small streams was assessed in 2009. Brown trout (Salmo trutta fario L.), captured upstream and downstream of these STPs, were used as biomonitors. The concentrations of 39 organic pollutants (PCBs, OCPs, PBDEs, HBCDs, and MCs), and the biological responses related to oxidative stress (lipid peroxidation and carbonyl protein), and antioxidant responses (superoxide dismutase, glutathione peroxidase and glutathione reductase) were measured. Through chemometrics of these parameters, three groups with 97.62% of the total accumulated variance were distinguished. Integration of the assessed biomarkers using the IBR index, ranked environment impact on sites as: DS Pacov > DS Prachatice > DS Brloh > US Pacov > US Prachatice > US Brloh (most to least affected). STPs are a major source of xenobiotic pollution in streams of the Czech Republic. The combined use of chemical analysis and biological responses is necessary to validate the efficacy of a battery of biomarkers chosen to detect environmental stress due to pollution.
University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25 Vodnany, Czech Republic. zhihuali06@yahoo.com
Zhi-Hua
ZH
Li
Vladimir
V
Zlabek
Jan
J
Turek
Josef
J
Velisek
Jana
J
Pulkrabova
Jitka
J
Kolarova
Eliska
E
Sudova
Petra
P
Berankova
Petra
P
Hradkova
Jana
J
Hajslova
Tomas
T
Randak
D000818:Animals; D000975:Antioxidants / Q000032:analysis; D018153:Czech Republic; D004784:Environmental Monitoring / Q000379:methods*; D005979:Glutathione Peroxidase / Q000032:analysis; D005980:Glutathione Reductase / Q000032:analysis; D015227:Lipid Peroxidation; D018384:Oxidative Stress; D045483:Rivers; D013482:Superoxide Dismutase / Q000032:analysis; D014337:Trout; D014874:Water Pollutants, Chemical / Q000032:analysis*
D000975:Antioxidants; D014874:Water Pollutants, Chemical; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase; D005980:Glutathione Reductase