The content of heavy metals [Cu, Ni, Cd, Pb, Zn] in common reed [Phragmites australis] and floating pondweed [Potamogeton natans]

We collected and examined water plant samples of floating pondweed (Potamogeton natans) and Common reed (Phragmites australis). The samples were taken from places situated along the Drawa River (before, next to and below the military training ground). Cu, Ni, Cd, Pb and Zn content was indicated in plants. The received results showed the essential difference of the heavy metals content between plants from various places. The military training ground is a source of Drawa River contamination by heavy metals.