Lo Stato trofico dello stagno di Platamona

Seasonal changes of nutrient concentrations and other chemical and biological parameters in Platamona's pond were investigated to asses its trophic level. The pond shows eutrophic. There is a large range of seasonal variations of totale alcalinity concentrations (3.3 - 6.9 meq l-1). The littoral and submersed macrophytes are very plentiful and the mean annual value of clorophylla(16 mg m-3) is high. Nevertheless the mean of concentrations of nitrate nitrogen (106 mg m-3), ammonia nitrogen (30 mg m-3) and reactive phosphorus (4 m-3) are low.