Mireille Consalvey PhD Thesis - University of St Andrews

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Figure 6.10: Change in taxonomic composition at the surface of the Point Clear
biofilm (1999) (A) 06: 00 No cells evident at the sediment surface but sub-surface
cells visible (B) 12: 00 One cell layer of diatoms, surface dominated by larger cells
e. g. Pleurosigma sp. (C) (D) Assemblage still dominated by larger forms but some
smaller cells evident in between cells and a well developed matrix of EPS (E) 18: 00
Surface still dominated by larger diatoms and also patches of cyanobacteria are
evident (F) 20: 00 Surface dominated by larger forms but sub-surface cells evident.
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