The Pinnularia genus in south-eastern Poland with consideration of rare and new taxa to Poland

Abstract

In the studies conducted in 2007-2012 in south-eastern Poland, 56 diatom taxa were found from the Pinnularia genus. Pinnularia brebissonii (Kützing) Rabenhorst, P. obscura Krasske, P. viridiformis Krammer, P. lundii Hustedt, and P. viridis (Nitzsch) Ehrenberg occurred at most of the investigated sites. Eighteen taxa were considered as new to Polish flora. Some taxa are very rare in Poland and Europe and are found in only a few localities. Eight taxa are listed on the Polish Red List of Algae, including six taxa classified as endangered (E): P. nobilis (Ehrenberg) Ehrenberg, P. nodosa (Ehrenberg) W. Smith, P. subrupestris Hantzsch, P. schoenfelderii Krammer, P. subgibba Krammer and P. viridiformis Krammer.

The Effect of Anthropogenic Change in the Structure of Diatoms and Water Quality of the Żołynianka and Jagielnia Streams

“…Also other rivers and streams in Poland were analyzed by diatomaceous indices, and showed similar ecological status Sixty diatom taxa were recorded from the Polish Red List of Algae [Siemińska et al 2006]. Eleven taxa from endangered category (E) and among them, most of the genus Pinnularia [Noga et al 2014b].…”

Periphytic diatoms from an oligotrophic lentic system, Piraquara I reservoir, Paraná state, Brazil

“…Length: 65.1-68.5 µm; width: 7-7.8 µm; striae: 11-12 in 10 µm. Ecology: previously registered for waters with neutral pH and high conductivity (Noga et al 2014). In Brazil, it was recorded from planktonic samples in Guaraguaçu River (Tremarin et al 2010) and from epiphytic samples in a mesotrophic reservoir of the South region (Marra et al 2016).…”

“…minor differs from Pinnularia viridis (Nitzsch) Ehrenberg by the valve outline and by the presence of a semi complex raphe (Krammer 2000). Ecology: considered as cosmopolitan (Krammer 2000); it is rare in waters with neutral to alkaline pH and in moderate to high conductivity (Cremer et al 2004, Noga et al 2014. It was previously registered for streams with acid pH and low conductivity, in Central Brazil (França et al 2017).…”

Frustulia tunariensis sp. nov. (Bacillariophyceae) from the Andes of Bolivia, South America

“…The high relative abundance reached by F. tunariensis sp. nov. (7.5%), places this taxon within the general definition of Frustulia as a conglomerate of acidophilous, oligo to mesotraphentic taxa living in peatlands and acid ponds and rivers with low electrolyte content [20,23,52].…”