Taxonomy of epilithic diatoms and teratological forms under the presence of metals in surface sediment Author Amaral, Mailor Wellinton Wedig 0000-0003-0749-4499 Graduate Program in Conservation and Management of Natural Resources (PPRN), Western Paraná State University, Universitária Street, 2019, Jardim Universitário, zip code 85819 - 110, Cascavel, Paraná, Brazil wedig_npi@hotmail.com Author Medeiros, Gabriela 0000-0002-5444-3064 Graduate Program in Agricultural Engineering (PGEAGRI), Western Paraná State University, Universitária Street, 2019, Jardim Universitário, zip code 85819 - 110, Cascavel, Paraná, Brazil gabsmedeiros@gmail.com Author Daufenbach, Vanessa 0000-0002-7186-029X National Network Professional Master in Water Resources Management and Regulation (ProfÁgua), Federal University of Technology - Paraná. Rosalina Maria Ferreira Street, 1233, Vila Carola, zip code 87301 - 899, Campo Mourão, Paraná, Brazil vanessa.daufenbach@gmail.com Author Sampaio, Silvio Cesar 0000-0002-9034-432X Graduate Program in Agricultural Engineering (PGEAGRI), Western Paraná State University, Universitária Street, 2019, Jardim Universitário, zip code 85819 - 110, Cascavel, Paraná, Brazil silvio.sampaio@unioeste.br Author Reis, Ralpho Rinaldo Dos 0000-0002-2476-2136 Graduate Program in Agricultural Engineering (PGEAGRI), Western Paraná State University, Universitária Street, 2019, Jardim Universitário, zip code 85819 - 110, Cascavel, Paraná, Brazil ralpho.reis@unioeste.br Author Ludwig, Thelma Alvim Veiga 0000-0003-0576-3499 Graduate Program in Botany, Federal University of Paraná. Life Sciences department. Centro Politécnico, mailbox Postal 19031, Jardim das Américas, zip code 81531 - 980, Curitiba, Paraná, Brazil veiga13ufpr@gmail.com Author Bueno, Norma Catarina 0000-0001-6939-9222 Graduate Program in Conservation and Management of Natural Resources (PPRN), Western Paraná State University, Universitária Street, 2019, Jardim Universitário, zip code 85819 - 110, Cascavel, Paraná, Brazil normacatarina@hotmail.com text Phytotaxa 2024 2024-05-14 647 3 237 273 http://dx.doi.org/10.11646/phytotaxa.647.3.3 journal article 10.11646/phytotaxa.647.3.3 1179-3163 13215724 Eunotia desmogonioides Metzeltin & Lange-Bertalot (2002: 27) Fig. 4 : T Length: 58.5–140.6 µm; 4.4–6.6 µm; striae: 15–17 in 10 µm (n = 34) Teratological form : deformed valve outline, undulated. Occurrence : S3, S8. Ecological characteristics : Cond.: 6.00–53.00 µS cm –1 ; BOD: 0.89–5.83 mg L− 1 ; COD: 4.68–17.50 mg L −1 ; N-NH: 200–680 µg L− 1 ; NO: 3 3 − 1 − 1 − − 1 − 1 0.32–7.50 mg L; DO: 7.66–14.62 mg L; pH: 5.79–7.09; PO: 0.004 –0.030 mg L; TP: 0.007 –0.017 mg L; TS: 11.00–66.00 4 mg L− 1 ; Temp.: 17.40–23.53 °C; Turb.: 7.03–13.70; Flow: 0.45–1.06 m 3 s; Average depth: 0.19–0.34 m ; Prec.: 3.48–9.96 mm . Metal concentrations : Co: 23.73–60.76 mg L –1 ; Cr: 27.33–88.85 mg L –1 ; Cu: 160.64–264.18 mg L- 1 ; Mn: 398.50–606.73 mg L –1 ; Ni: 27.57–73.27 mg L –1 ; Pb: 31.05–66.21 mg L –1 ; Zn: 78.97–173.12 mg L –1 .