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Identification of species using direct Sanger sequencing and BLAST analysis. Samples were divided based on the WHO guideline value for recreational ponds (24 µg L−1 total microcystin (MC)). The “n.d.” abbreviation refers to not exploitable 16S rRNA sequences. (a) Species distribution for samples containing total MCs concentration below the WHO guideline value. (b) Species distribution for samples containing total MCs concentration above the WHO guideline value.
