Fig. 3From: Impact of human disturbances on soil cyanobacteria diversity and distribution in suburban arid area of Marrakesh, MoroccoSpecies richness (a), spectrum families (b), and spectrum genera (c) of cyanobacteria in the studied soils. Data are means ± standard error (n = 3). Different letters (3a) indicate significant differences (p < 0.05 by Tukey’s HSD test) between sampled sites, NS: not significant; * p < 0.05 significant difference; *** p < 0.001 highly significant difference using two-way ANOVA and Tukey testBack to article page