Scots pine bark, topsoil and pedofauna as indicators of transport pollutions in terrestrial ecosystems

The impact of the motorway on pollution was evaluated by determining chosen heavy metals and acid reaction (pH) in the pine bark, in forest and meadow topsoil. The content of these environmental contaminants was determined in the topsoil and in the bark of around 40 year-old Scots pines (Pinus sylvestris L.) growing right next to the soil analyzed. The pollutants were examined at localities situated around 5, 200, 1500 m away from the motorway. To evaluate influence of Cd, Pb, Zn, Cu and the topsoil pH on pedofauna, five meadows localities situated 1, 20, 40, 150, 1550 m away from the motorway were examined. It was detected that in the forest habitats analyzed the bark was characterized by considerably higher acidity (pH 3.14-3.88) than the topsoil of the pines analyzed (pH 5.45-7.22). Except of Cd at locality 200 m and Cu at 1500 m from motorway, the higher concentration of heavy metals was noted in topsoil. In the meadow soil of the locality 150 m from the motorway the highest concentrations of Cd and Zn were detected. The greatest diversity of the meso and macrofauna and trophic relations the most resembling natural were detected in the area furthest away from the motorway, where the content of the heavy metals was the lowest. The lowest density and diversity of meso- and macrofauna were detected in the area situated 40 m, where the concentration of heavy metals was higher than at 1, 20 and 1550 m from the motorway situated localities.