EFECTUL PĂSTRĂRII ÎNDELUNGATE A RELEVEELOR DE SOL ÎN CONDIŢII DE LABORATOR ASUPRA COMPONENŢEI ALGOFLOREI EDAFICE DIN PĂDURILE DE FAG

Abstract

The analysis of brown soil on which has been kept in the laboratory conditions for 15-18 years and helped us to distinguish 22 species of algae in comparison with these 48, which was established in the first period of investigation (1984-1987 years). The algae community which was established in the years 2000-2002, are characterized by the predominance of representatives green algae fillum. A long preservation of soil samples in the laboratory for 15-18 years, is contributing to the disapperence of algae from Bacillariophyta fi llum, decreasing green and from Xanthophyta fillum algae diversity, which decreases the number more than twice with a lesser extent it influences on the Cyanophyta fillum. The most resistant were found to be Cyanophyta fillum fi laments form, which are characterized by the presence of a mucilaginous sheath which is well pronounced.