EN
In 1984-1995 the desmid flora was analysed in the Lubiec peat-bog. Of
206 taxa recorded as many as 43.2% were accessory and accidental species, which testifies to
a high variability of this desmid community. The Thumark Q green algae factor was applied
for defining the peat-bog’s trophic status, which decidedly determines the species composition
and abundance of desmids.