Assessment of macro and microelement accumulation capability of two aquatic plants.
The concentrations of four macroelements (C, N, P, S) and eight trace metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn) were measured in the leaves and roots of the emergent plant, Phragmites communis Trin., and in the shoots and roots of the submersed Najas marina L., taken from Lake Averno (Naples, Italy). Phragmites communis leaves showed higher concentrations of carbon, nitrogen and phosphorus than roots, while the roots exhibited significantly higher concentrations of sulphur and trace metals. Najas marina roots also showed higher concentrations of sulphur and trace metals than shoots, but these differences were less marked than in Phragmites communis except for sulphur. Sulphur was the only macronutrient to show the highest concentrations in the roots. Phragmites communis roots had higher values of Cr, Cu, Fe, Mn and Ni than Najas marina roots. By contrast, Cd, Cr, Fe, Ni, Pb and Zn concentrations were higher in Najas marina shoots than in Phragmites communis leaves. Phragmites communis, available through the year, showing high capability to accumulate trace metals in the roots, appears a good monitor of lake contamination, better than Najas marina.
Baldantoni
Daniela
D
Dipartimento di Biologia Vegetale, Università degli Studi di Napoli, Federico II Via Foria, 223 - 80139 Napoli, Italy. baldanto@unina.it
Alfani
Anna
A
Di Tommasi
Paul
P
Bartoli
Giovanni
G
De Santo
Amalia Virzo
AV
D035961:Alismatales / Q000737:chemistry*; D002244:Carbon / Q000032:analysis; D017753:Ecosystem; D004602:Elements; D004784:Environmental Monitoring / Q000379:methods; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D006109:Poaceae / Q000737:chemistry*; D013455:Sulfur / Q000032:analysis; D014131:Trace Elements / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis
D004602:Elements; D014131:Trace Elements; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D013455:Sulfur; D002244:Carbon; D009584:Nitrogen