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Photomicrographs of cyanobacterial species of the families Aphanizomenonaceae: Nodularia sp. (A); Aulacoseiraceae: Aulacoseira sp. (B); Coleofasciculaceae: Geitlerinema sp. (W); Chroococcaceae: Asterocapsa submersa (D), Chroococcus turgidus (E), A. aerophytica (F); Gloeotrichiaceae: Gloeotricia sp. (G).
