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Ecological risk assessment of environmental pollutants in freshwater ecosystems

Screening-level risk assessment of pollutants (SLRA), with special reference to heavy metals, polycyclic aromatic hydrocarbons and polychlorinated biphenyls. Proper site models are used to identify the stressor sources, pathways and fate of stressors of potential concern. The distribution and temporal variation of contaminants is assessed through measurements on chemical concentrations in biological material (selected biological indicator organisms).

Toxic effect assessment of pollutants: comprising hazard identification, dose-response assessment and exposure assessment. For this purpose, laboratory tests were elaborated to study primarily the effects or chronic no-observed effects concentrations (EC₅₀ or NOEC) of compounds. The fate of pollutants is assessed through the level of disturbances evoked in the valve movement, pumping behavior and the filtration rate of bivalves, and through studies focused on the determination of the bioavailability and the bioaccumulation dynamics of contaminants in bivalves.

Kontreczky, Cs., A. Farkas, J. Nemcsók and J. Salánki, (1997). Short- and long-term effects of deltamethrin on filtering activity of freshwater mussel (Anodonta cygnaea L.). Ecotoxicology and Environmental Safety, 38, 195 - 199. IF 1,252

Salánki, J., Cs. Kontreczky and A. Farkas (1997). Monitoring the effects of deltamethrin by freshwater mussel (Anodonta cygnaea L.). - Pharmacology and Toxicology, Vol. 80, Suppl. III., p. 42. IF 0,925

Farkas A., Salánki J., Varanka I. (1998) Assessment of heavy metal concentrations in organs of two fish species of Lake Balaton. Proceedings of the Latvian Academy of Sciences, Section B, vol. 52. Supplement. ISSN 1407-009X, 93-99.

Salánki J., Farkas A., Kontreczky Cs., Varanka I. (1999) Possible impact of heavy metals in sudden eel mortality. - In: A. K. Mitta, F. B. Eddy and J. S. Datta Munshi (eds.) Water/Air Transition in Biology. Oxford & IBH Publishing Co. Pvt.Ltd. New Delhi, India. 257-262.

Farkas A., Salánki J. (2000) Effect of PCB 118 on the filtering behaviour of the freshwater mussel Anodonta cygnaea L. - Central Eur. J. Public Health, 8 (JHEMI 44), Suppl., 30-31.

Farkas A., Salánki J., Varanka I.(2000) Heavy metal concentrations in fish of Lake Balaton. - Lakes & Reservoires: Research and Management, 5, 271-279.

Farkas A., Salánki J., Specziár A., Varanka I. (2001) Metal pollution as health indicator of lake ecosystems. - International journal of occupational medicine and environmental health, 14 (2), 163-170.

Farkas A., Salánki J., Specziár A. (2002) Relation between Growth and the Heavy Metal Concentration in Organs of Bream Abramis brama L. Populating Lake Balaton. Archives of Environmental Contamination and Toxicology, 43, 236-243. IF 1,301.

Farkas A., Salánki J., Specziár A. (2003) Age- and size specific patterns of heavy metals in the organs of freshwater fish Abramis brama L., populating a low contaminated site Water Research, 37(5), 959-964. IF 1,376

 Salánki, J., Farkas, A., Kamardina, T., S-Rózsa, K. (2003) Molluscs in biological monitoring of water quality. Toxicology Letters, 140-141C, 403-410.IF 1,587

Farkas A. (1993). Preparation of samples for heavy metal analyses and measuring heavy metals. In: Limnological Bases of Lake Management. Proceedings of the ILEC/UNEP International Training Course. Salánki, J., Istvánovics, V. (eds.). International Lake Environmental Committee Foundation, Shiga, Japan, pp 160 - 163.

Farkas A., Salánki, J., Varanka, I., (1999) Heavy metal pollution of fish in Lake Balaton. Sustainable Lake Management. 8^th International Conference on the Conservation and Management of Lakes. Dis Congress Copenhagen A/S, Denmark.

Farkas A, Salánki J. (2001). On-line monitoring of water pollution by mussels. In: Pollution Surveillance and Control in Wetland Ecosystems. Eurolab Course Manual, Kováts, N., Szalay, T. eds., University of Veszprém, pp. 56-63.