Fig. 2From: Impact of human disturbances on soil cyanobacteria diversity and distribution in suburban arid area of Marrakesh, MoroccoChlorophyll a concentration (μg/g soil) in soil microalgae. Data are means ± standard error (n = 3). Different letters 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 tow-way ANOVA and Tukey testBack to article page