Rarely reported Planothidium Round et Bukhtiyarova (Bacillariophyceae) from flowing waters of southern Poland

Teresa Noga; Anna Bysiek; Aleksandra Sobiło; Wiktoria Bąk; Anita Poradowska; Krzysztof Kosiński

doi:10.26881/oahs-2026.1.11

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Rarely reported Planothidium Round et Bukhtiyarova (Bacillariophyceae) from flowing waters of southern Poland

Oceanological and Hydrobiological Studies

AHEAD OF PRINT

By: Teresa Noga, Anna Bysiek, Aleksandra Sobiło, Wiktoria Bąk, Anita Poradowska and Krzysztof Kosiński

Open Access

|May 2026

Figures & Tables

Planothidium cavilanceolatum: A–T – light micrographs (scale bars: 10 μm); U–Z – scanning electron microscope micrographs (U – external view of the raphe valve, V – internal view of the raphe valve, W & X – internal view of the rapheless valve, Y & Z – external view of the rapheless valve).

P. daui: (A–AC) light micrographs (scale bars: 10 μm); (AD–AI) scanning electron microscope micrographs (AD & AF) external view of the raphe valve, (AE) internal view of the raphe valve, (AG) internal view of the rapheless valve, (AH & AI) external view of the rapheless valve).

Planothidium. gallicum: (A–U) light micrographs (scale bars: 10 μm); (V–AA) scanning electron microscope micrographs (V & X) external view of the raphe valve, (W) internal view of the raphe valve, (Y & AA) external view of the rapheless valve, (Z) internal view of the rapheless valve).

Planothidium. hinzianum: (A–U) light micrographs (scale bars: 10 μm); (V–AA) scanning electron microscope micrographs (V) external view of the raphe valve, (W) internal view of the raphe valve, (X & Y) internal view of the rapheless valve, (Z & AA) external view of the rapheless valve).

Planothidium. potapovae: (A–S) light micrographs (scale bars: 10 μm); (T–Y) scanning electron microscope micrographs (T & U) external view of the raphe valve, (V) internal view of the raphe valve, (W) external view of the raphe valve and internal view of the rapheless valve, (X) internal view of the rapheless valve, (Y) external view of the rapheless valve).

Physico-chemical parameters measured in the Kisielina and Szum rivers and in the cooling-water discharge channel of the Stalowa Wola Combined Heat and Power Plant (southern Poland)

Parameter	Kisielina	Szum	Cooling-water channel
T[°C]	2.6–16.0	6.7–16.3	19.7–21.2
PH	6.2–7.2	6.6–8.0	8.3–8.6
EC [μS · cm⁻¹]	115–320	133.5–331	503–511
Cl^– [mg · L⁻¹]	10.55–28.94	0.07–9.17	10.67–13.58
SO₄^2- [mg · L⁻¹]	20.33–45.63	10.72–20.54	22.03–31.27
PO₄^3- [mg · L⁻¹]	<0.001	<0.001–0.15	<0.001
NO₂^– [mg · L⁻¹]	<0.001	<0.001–0.02	<0.001
NO₃^– [mg · L⁻¹]	2.31–8.09	0.13–6.60	2.55–2.79
NH₄⁺ [mg · L⁻¹]	0.02–0.20	<0.001–0.55	0.02–0.05
Mg²⁺ [mg · L⁻¹]	3.22–11.86	1.28–3.73	4.13–5.76
Ca²⁺ [mg · L⁻¹]	16.36–47.30	26.48–50.27	21.92–30.40

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DOI: https://doi.org/10.26881/oahs-2026.1.11 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X

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Language: English

Submitted on: Jan 27, 2026

Accepted on: Apr 2, 2026

Published on: May 12, 2026

Published by: University of Gdańsk

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

diatoms,

P. daui,

Related subjects:

© 2026 Teresa Noga, Anna Bysiek, Aleksandra Sobiło, Wiktoria Bąk, Anita Poradowska, Krzysztof Kosiński, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

AHEAD OF PRINT

Rarely reported Planothidium Round et Bukhtiyarova (Bacillariophyceae) from flowing waters of southern Poland

Figures & Tables

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Physico-chemical parameters measured in the Kisielina and Szum rivers and in the cooling-water discharge channel of the Stalowa Wola Combined Heat and Power Plant (southern Poland)

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