Eunotia subarcuatoides Alles, Nörpel & Lange-Bertalot (1991: 188)

Amaral, Mailor Wellinton Wedig, Medeiros, Gabriela, Daufenbach, Vanessa, Sampaio, Silvio Cesar, Reis, Ralpho Rinaldo Dos, Ludwig, Thelma Alvim Veiga & Bueno, Norma Catarina, 2024, Taxonomy of epilithic diatoms and teratological forms under the presence of metals in surface sediment, Phytotaxa 647 (3), pp. 237-273 : 246

publication ID	https://doi.org/10.11646/phytotaxa.647.3.3
DOI	https://doi.org/10.5281/zenodo.14743451
persistent identifier	https://treatment.plazi.org/id/C92C87AE-FFF4-FFF1-FF2B-FD80C359FC7C
treatment provided by	Felipe (2024-08-02 12:46:12, last updated 2025-01-26 20:25:14)
scientific name	Eunotia subarcuatoides Alles, Nörpel & Lange-Bertalot (1991: 188)
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Treatment

Figs 4 View FIGURE 4 : W–X

Length: 11.3–15.9 µm; width: 2.9–3.8 µm; striae: 18–20 in 10 µm (n = 3)

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

Occurrence: S3, S8.

Ecological characteristics: Cond.: 44.00–53.00 µS cm –1; BOD: 1.49–5.66 mg L− 1; COD: 8.08–16.67 mg L− 1; N-NH: 200–378 µg L− 1; − 3 NO: 0.37–5.46 mg L− 1; DO: 10.60–14.57 mg L− 1; pH: 6.19–6.58; PO: 0.006 –0.030 mg L− 1; TP: 0.006 –0.010 mg L− 1; TS: 38.00– 3 4 44.00 mg L− 1; Temp.: 17.35–21.57 °C; Turb.: 10.70–24.40; Flow: 0.47–6.34 m 3 s; Average depth: 0.19–0.37 m; Prec.: 3.48–9.96 mm.

Metal concentrations: Co: 23.91–60.76 mg L –1; Cr: 27.33–88.85 mg L –1; Cu: 163.45–241.67 mg L- 1; Mn: 398.50–557.50 mg L –1; Ni: 31.80–69.89 mg L –1; Pb: 35.58–48.63 mg L –1; Zn: 83.42–173.12 mg L –1.

Figures

FIGURE 4. Epilithic diatoms from Cascavel River micro-watershed in LM. A–C. Actinella hermes-moreirae. D–J. Eunotia bilunaris. G–J. Teratological valves. K–P. E. botulitropica. P. Teratological valve. Q–R. E. canicula. S–T. E. desmogonioides. T. Teratological valve. U–X. E. subarcuatoides. W–X. Teratological valves. Y–Z. E. fallax. AA. E. formica. AB. E. formicina. AC. E. karenae. AD. E. intricans. AE. E. longicamelus. AF. E. rabenhorstii var. monodon. AG. E. rabenhorstii var. triodon. AH–AJ. E. juettnerae. AK–AM. E. kruegeri. AN–AO. E. muscicola. AP–AQ. E. monodon. AQ. Teratological valve. AR–AX. E. meridiana. AV–AX. Teratological valves. AY. E. georgii. Scale bars: 10 µm.