engleski

Evaluation of chemical status of Kopački rit surface water bodies through analysis of selected heavy metals through one-year period

Wetlands are the most productive ecosystems on Earth. Due to the undergoing wet – dry cycles, they ensure the diversity of ecological conditions in the same habitat and support high biodiversity. The dynamics of the Kopački rit wetland floodplain water regime is a consequence of its geographical location in the area of ​​the Drava – Danube confluence. The chemical status of surface water is based not only on the annual average concentrations (AAC) of the substances, but also on the maximum annual concentration (MAC). Heavy metals are among the most dangerous inorganic pollutants due to biodegradability, bioaccumulation, toxicity at low concentrations and due to incorporation into food chains. Dissolved in water, they are in ionic form and non-biodegradable and tend to accumulate in living things in the process of bioaccumulation. As part of the Naturavita project in the Nature Park Kopački rit, sampling and analysis of mercury, nickel, cadmium, lead and their compounds were carried out at 19 locations through one-year period of 12 field survey cycles. According to the obtained results, at all sampling locations, the measured average (AAC) and maximum annual concentrations (MAC) do not exceed allowable concentration according to Regulation on water quality standard (OG 96/2019). Good chemical status has been achieved at all sampling locations.

surface waters ; Kopački rit Nature Park ; wetland ecosystems ; heavy metals ; bioaccumulation

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