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Due to its ability to accumulate metals, availability throughout the year and  its large biomass, Phragmites australis (common reed) is suitable for  biomonitoring studies for the evaluation of load level of water ecosystem  with trace metals. The heavy metals concentration in P.australis tissue can  be several ten to several thousand times higher than those in the surrounding  water. In this study we examined the content of heavy metals (Cd, Co, Cr, Cu,  Mn, Ni, Pb, Zn, Sr and V) in sediment, water and different organs of  Phragmites australis collected from Lake Skadar, Montenegro, during different  seasons of the year 2011. The highest concentrations of Sr were found in the  leaves, while the other studied metals showed their highest concentrations in  the roots. Thus, P. australis is considered a root bioaccumulation species.  For most metals the concentration in roots and stems increases over time  until the end of the growing season, and then decreases, while the  concentration in leaves increases even after the growing season of the plant.  If P. australis is used for phytoremediation purposes, then it should be  harvested after the growing season because then the concentration of metals  in the aboveground parts is maximal

Seasonal changes in metal accumulation and distribution in the organs of Phragmites australis (common reed) from Lake Skadar, Montenegro