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A-B. Electron dispersive X-ray spectroscopy of B. ganeshii filaments: (A) nucleation and (B) calcite crystals.

A-B. Electron dispersive X-ray spectroscopy of B. ganeshii filaments: (A) nucleation and (B) calcite crystals.

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Figure 1. Sampling sites of B. ganeshii populations in central Mexico....
Figure 2A-E. Seasonal changes in temperature (A), pH (B), total...
Figure 3. Redundancy analysis (RDA) biplot of the carbonate...
Figure 4A-F. Calcification in B. ganeshii. (A) Light-microscopy view of...
Figure 5A-B. Electron dispersive X-ray spectroscopy of B. ganeshii...
Calcification of the filamentous cyanobacterium Blennothrix ganeshii in calcareous tropical streams of central Mexico region Calcificación de la cianobacteria Blennothrix ganeshii en ríos calcáreos tropicales de la región central de México
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  • Jan 2013
Beltrán-Magos, Y, J. Carmona, G. Vilaclara and M. Bojorge-García. 2013. Calcification of the filamentous cyanobacterium Blennothrix ganeshii in calcareous tropical streams of central Mexico region. Hidrobiológica 23 (1): XXX-XXX. ABSTRACT Geochemical, mineralogical and microbiological data from four freshwater streams in central region of Mexico in...
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... the initial precipitate nucleation indicates the presence of calcium carbonate par-Hidrobiológica ticles with diameters that range from several tenths of a micrometer to as much as 1 micrometer on the polysaccharide sheath (Fig. 4B). EDXS of these precipitates showed they contained a lower Ca 2+ percentage than the fully formed calcite crystals (Fig. 5A-B). Inclusions contained Ca 2+ as a major element. Around the sheaths, the calcite coating was enlarged (up to five times the diameter of the trichome) mainly by the addition of calcite crystals, which grouped themselves in cylindrical tubes (Fig. 4F). X-ray diffraction showed a high number of minerals (carbonates, silicates and oxides) ...