Frustulia saxonica Rabenhorst (1853: 50)

Frustulia saxonica Rabenhorst (1853: 50)

Fig. 8 View FIGURE 8 : I

Length: 68.5–71.8 µm; W: 16.9–17 µm (n = 2)

Teratological form: deformed valve outline, slightly undulated in one side of the valve.

Occurrence: S1, S2.

Ecological characteristics: Cond.: 60.00–94.00 µS cm –1; BOD: 6.62–13.63 mg L− 1; COD: 7.14–25.30 mg L− 1; N-NH: 200 µg L− 1; NO: 3 3 − 1 − 1 − − 1 − 1 11.80–12.70 mg L; DO: 7.52–9.50 mg L; pH: 6.18–6.78; PO: 0.002 –0.055 mg L; TP: 0.01–0.09 mg L; TS: 44.00–47.00 4 mg L− 1; Temp.: 19.10–20.91 °C; Turb.: 2.82–3.32; Flow: 0.06–0.61 m 3 s; Average depth: 0.03–0.10 m; Prec.: 3.48–9.96 mm.

Metal concentrations: Co: 16.73–47.67 mg L –1; Cr: 25.08–85.31 mg L –1; Cu: 206.13–238.31 mg L- 1; Mn: 347.86–406.12 mg L –1; Ni: 28.58–70.77 mg L –1; Pb: 26.51–43.45 mg L –1; Zn: 81.88–364.96 mg L –1.