Planothidium rostratum (Østrup) Lange-Bertalot (1999: 279)

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 : 250-251

publication ID	https://doi.org/10.11646/phytotaxa.647.3.3
DOI	https://doi.org/10.5281/zenodo.14743477
persistent identifier	https://treatment.plazi.org/id/C92C87AE-FFF0-FFF6-FF2B-F828C35BFE91
treatment provided by	Felipe (2024-08-02 12:46:12, last updated 2025-01-26 20:25:14)
scientific name	Planothidium rostratum (Østrup) Lange-Bertalot (1999: 279)
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Treatment

Figs 7 View FIGURE 7 : AO–AP

Length: 13.9–14.1 µm; width: 5.2–5.8 µm; striae: 15 in 10 µm (n = 2)

Teratological form: deformed valve outline, with loss of transapical symmetry.

Occurrence: S3.

Ecological characteristics: Cond.: 42.00–50.00 µS cm –1; BOD: 1.43–2.38 mg L− 1; COD: 4.68–13.68 mg L− 1; N-NH: 323–680 mg L− 1; 3 − 1 − 1 − − 1 − 1 NO: 0.34–1.00 mg L; DO: 7.79–14.80 mg L; pH: 6.26–6.28; PO: 0.005 –0.006 mg L; TP: 0.007 –0.016 mg L; TS: 10.00– 3 4 11.00 mg L− 1; Temp.: 17.68–23.25 °C; Turb.: 10.30–10.40; Flow: 0.62–0.66 m 3 s; Average depth: 0.22–0.24 m; Prec.: 9.96 mm.

Metal concentrations: Co: 23.73–47.24 mg L –1; Cr: 27.33–80.86 mg L –1; Cu: 160.64–235.49 mg L- 1; Mn: 398.05–444.52 mg L –1; Ni: 27.57–69.89 mg L –1; Pb: 35.58–66.21 mg L –1; Zn: 78.97–167.31 mg L –1.

Figures

FIGURE 7. Epilithic diatoms from Cascavel River micro-watershed in LM. A. Placoneis elginensis. B. P. hambergii. C. P. undulata. D. Achnanthes inflata. E–G. Achnanthidium caledonicum. H–P. A. macrocephalum. L–P. Teratological valves. Q–T. A. tropicocatenatum. U–AC. A. minutissimum. X–AC. Teratological valves. AD–AH. A. modestiforme. AF–AH. Teratological valves. AI–AJ. Gogorevia constricta. AK. Planothidium bagualensis. AL. P. lagerheimii. AM–AP. P. rostratum. AO–AP. Teratological valves. AQ–AR. P. frequentissimum. AS–AT. Psammothidium hustedtii. AU–AV. Humidophila arcuatoides. AW. H. implicata. AX–AZ. H. contenta. AAA– AAC. H. subtropica. AAD. Cocconeis fluviatilis. AAE. C. lineata. AAF. Luticola ectorii. AAG. L. hustedtii. AAH. L. charlatii. AAI– AAJ. L. permuticoides. AAK. L. ventricosa. AAL–AAN. L. goeppertiana. Scale bars: 10 µm.