Gomphonema pumilum (Grunow) E. Reichardt & Lange-Bertalot (1991: 528)

Gomphonema pumilum (Grunow) E. Reichardt & Lange-Bertalot (1991: 528)

Fig. 6 View FIGURE 6 : AM

Length: 24.8 µm; width: 4.9 µm; striae: 12 in 10 µm (n = 1)

Teratological form: deformed valve outline, with bent of the valve.

Occurrence: S8.

Ecological characteristics: Cond.: 44.00 µS cm –1; BOD: 3.27 mg L− 1; COD: 11.05 mg L− 1; N-NH: 18 µg L− 1; NO: 0.32 mg L− 1; DO: 3 3 − 1 − − 1 − 1 − 1 3 13.39 mg L; pH: 6.43; PO: 0.004 mg L; TP: 0.007 mg L; TS: 42.00 mg L; Temp.: 17.71 °C; Turb.: 8.27; Flow: 1.12 m s; 4 Average depth: 0.33 m; Prec.: 9.96 mm.

Metal concentrations: Co: 34.35–39.39 mg L –1; Cr: 28.18–85.31 mg L –1; Cu: 170.55–264.18 mg L- 1; Mn: 503.78–606.73 mg L –1; Ni: 32.81–73.27 mg L –1; Pb: 31.05–39.31 mg L –1; Zn: 79.00– 172.60 mg L –1.