SEASONAL DYNAMICS OF HEAVY METAL BIOACCUMULATION (Fe, Mn, Cu, Zn and Pb) IN Phragmites australis (Cav.) Trin. ex Steud. IN BARDAČA FISHPOND
Paper monitors seasonal dynamics of heavy metals bioaccumulation (Fe,
Mn, Cu, Zn and Pb) of emerged plant Phragmites australis (Cav.) Trin. ex Steud. on two
localities (Necik and Sinjak) in the area of Bardača fishpond (BiH-Republic of Srpska).
Dynamics of heavy metals bioaccumulation varied depending on sampling period,
locality and plant organ. Concentration, transfer (transport) and accumulation of metals
from sediment to rhizome above ground plant part was evaluated based on biological
concentration factor (BCF), translocation ability (TA) and bioaccumulation factor (BAC).
The highest average BCF value in researched species was determined for Fe (0.87) and
the lowest for Zn (0.18). Bioaccumulation coefficient was the highest for Mn (0.82) and
the lowest for Fe (0.20) whereas TA was the highest for Zn (2.28) and Mn (2.70). For Fe,
it was significantly lower (0.24). Based on values for BCF, TA and BAC, Phragmites
australis (Cav.) Trin. ex Steud. could be identified as accumulator for Mn and indicator
for metals Fe, Zn and Cu and it has good potential for application in phytoremediation
techniques, especially in phytostabilization and phytoextraction of polluted land.
Considering the fact that higher degree of bioaccumulation was recorded in the period at
the end of season, we could take this period as a signal for their removal from water
ecosystems.