Figure 4
From: Analysis of molecular diversity within single cyanobacterial colonies from environmental samples
Light micrographs of colonies with ambiguous morphology. (a) Calcified hemispherical GDL1 colony from the Guadiela River. (b) Section of the MU4 colony from the Muga River showing layers. (c) Slightly irregular-hemispherical and calcified BAT4 colony from the Bogarra River. (d) Zonation with distinct pigmentation in the decalcified BAT4 colony. (e) Large proportion of isopolar filaments without heterocysts within the GDL1 colony. (f) Heterogeneity in the trichomes found in the BAT4 colony. (g) Detail of isopolar filaments without heterocysts within the GDL1 colony. (h) Calothrix filament found in the BAT2 colony from the Bogarra River. Bars, 1 mm (a–c), 200 μm (d), 100 μm (e,f), 20 μm (g,h).
