Encyonema silesiacum (Bleisch) D.G.Mann (1990: 667)

Encyonema silesiacum (Bleisch) D.G.Mann (1990: 667)

Fig. 5 View FIGURE 5 : AA

Length: 31.5 µm; width: 8.5 µm; striae: 11 in 10 µm (n = 1)

Teratological form: deformed valve outline, with slight constriction in the median portion of the valve, on the ventral side.

Occurrence: S2.

Ecological characteristics: Cond.: 70.00 µS cm –1; BOD: 1.00 mg L− 1; COD: 2.62 mg L− 1; N-NH: 200 µg L− 1; NO: 3.30 mg L− 1; DO: 3 3 − 1 − − 1 − 1 − 1 3 15.81 mg L; pH: 6.30; PO: 0.05 mg L; TP: 0.005 mg L; TS: 174.00 mg L; Temp.: 18.28 °C; Turb.: 2.47; Flow: 0.88 m 4 s; Average depth: 0.14 m; Prec.: 2.37 mm.

Metal concentrations: Co: 17.50 mg L –1; Cr: 79.78 mg L –1; Cu: 244.29 mg L –1; Mn: 370.99 mg L –1; Ni: 66.65 mg L –1; Pb: 33.49 mg L –1; Zn: 146.17 mg L –1.