Sellaphora saugerresii (Desmazières) C.E.Wetzel & D.G.Mann (2015: 209)

Figs 9: AD–AF

Length: 5.2–16.6 µm; width: 3–5.2 µm; striae: 19–23 in 10 μm (n = 33)

Teratological form: deformed valve outline, usually undulated, with asymmetry of the apical axis.

Occurrence: S1, S2, S7, S8.

Ecological characteristics: Cond.: 1.00–70.00 µS cm –1; BOD: 1.00– 10.3 mg L− 1; COD: 1.22–27.60 mg L− 1; N-NH: 110–500 µg L− 1; NO: 3 3 − 1 − 1 − − 1 − 1 2.00– 6.88 mg L; DO: 8.18–15.81 mg L; pH: 5.11–7.42; PO: 0.002 –0.323 mg L; TP: 0.005 –0.350 mg L; TS: 7.00–174.00 4 mg L− 1; Temp.: 18.28–22.27 °C; Turb.: 1.93–41.90; Flow: 0.05–6.34 m 3 s; Average depth: 0.02–0.37 m; Prec.: 2.37–9.96 mm.

Metal concentrations: Co: 17.50–65.84 mg L –1; Cr: 25.92–85.01 mg L –1; Cu: 163.45–273.45 mg L- 1; Mn: 329.01–642.36 mg L –1; Ni: 27.57–72.54 mg L –1; Pb: 31.05–52.76 mg L –1; Zn: 78.35–287.28 mg L –1.