Abstract

Abstract Comparison of long‐term environmental monitoring data show that in August and September 2002 heavy metal (Cu, Pb and Zn) concentrations increased in Lithuanian rivers. Resent investigation has indicated that increase of heavy metals (Cu, Pb and Zn) by 60–81 % in all the rivers that are subject to the State River Monitoring and could be correlative with land fires. Fires of forests and peat bogs have outspread all over Lithuania in the summer and the first half of autumn of 2002. This paper attempts to prove an assumption that these fires could have caused a significant increase of heavy metal concentrations in the water of Lithuanian rivers in August 2002. It also means that land fires should be evaluated as an environmental risk factor with a serious impact on the state of aquatic environment and must be taken into account in calculations of environmental damage.

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