Table 1: Study plots with their number (Pl.) and elevation (El.) in m above sea level, content of P and K in mg per kg soil, total number of Carex nigra shoots (Ss), number of flowering shoots (Sf) and the clonal diversity and genetic variation of the species in the plots measured as number of clones (G), clonal diversity (R), number of alleles (Na), effective number of alleles (Ne), observed heterozygosity (Ho), expected heterozygosity (He) and Fixation index (F).