Diagnosis of the Diatom Community upon Biofilm Development on Stainless Steels in Natural Freshwater

Figure 4

ESEM micrographs showing the diatom species composition present on the SS specimens after a six-month exposure period in the natural river: arrows in plates ((a) to (f)) indicate Cocconeis placentula (a), Amphora ovalis (b), Gyrosigma sp. ((c), (d)), Placoneis elginensis along with other pennate diatoms ((e), (f)), and Nitzschia sigmoidea are embedded in the biofilm matrix ((g), (h)). Horizontal line indicates the scale bar (10, 20, 50, and 100 µm).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)