Macrophytes as indicators and potential remediators in aquatic ecosystems: A case study
Borisev, M; Pajevic, S; Stanković, Z; Krstić, B.
The content of macronutrients (N, P, K, Na) and heavy metals (Fe, Mn, Zn, Cu, Ni, Pb, Cd, Co) in plant samples of dominant aquatic macrophytes (Ceratophyllum demersum, Phragmites australis, Trapa natans, Hydrocharis morsus-ranae, Nymphaea alba, Nymphoides peltata, Salvinia natans) from the river Jegricka (Serbia) is presented. Macronutrients content in plant tissue was above necessary limits for plant maximum growth indicating to substantial bioavailability of those elements typical for eutrophic environment. Content of investigated nutrients and heavy metals varied in relation to plant species. Ceratophyllum demersum turned out to be best bioaccumulator for P, K, Fe, Mn, Cu, Ni, Pb, and Co. Salvinia natans accumulated high amounts of N, P, K, Na, and especially Cu and Zn. Nymphaea alba accumulated highest recorded amounts of N and Na. Hydrocharis morsus-ranae accumulated very high amounts of N, P, K, Na, Pb, and Mn. Because of its fast growth, large abundance and homogeneous distribution on this locality, Phragmites australis might have high potential in use for phytoextraction of macronutrients and heavy metals. The application of macrophytes as indicators might be limited depending on the varying of environmental conditions on different localities.