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 monodon Ehrenberg (1843b: 414) Fig. 4 : AQ Length: 70.2 µm; width: 7.8 µm; striae: 8 in 10 µm (n = 1) Teratological form : deformed valve outline, undulated. 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.: 18.23 °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 .