http://hdl.handle.net/11089/15741 Thu, 09 Apr 2026 06:11:51 GMT 2026-04-09T06:11:51Z http://hdl.handle.net/11089/15785 Charakterystyka fitoplanktonu w Sulejowskim Zbiorniku Zaporowym w latach 1991-1993 Galicka, Wanda; Rzerzycha, Ewa; Rzerzycha, Bogumił In 1991-1993 phytoplankton was investigated in the Sulejów Reservoir. In spring and autumn two peaks and additionally in summer 1992 one peak of development were noted, characterized by average biomass values of 8.1 to 33.4 mg dm^-3. In general, diatoms prevailed, mainly Stephanodiscus hantzschii Grun. and Melosira granulta (Ehr.). When their numbers fell the dominants were plant flagellates. The blue-green algae (Cyanophyta) were high only in several months in summer and early autumn, their chief components being Microcystis aeruginosa Kutz. and Aphanisomenon flos-aquae (L.) Ralfs. The seasonal dynamics of zooplankton development was also observed and at the some time its feeding pressure on the phytoplankton was the determined. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/11089/15785 1996-01-01T00:00:00Z http://hdl.handle.net/11089/15784 Obserwacje zmienności morfologicznej Pediaslrum boryanum (Turp.) Menegh. i Pediastrum duplex Meyen w próbach ze stawu Okręt Kalinowska-Kucharska, Ewa; Sitkowska, Małgorzata Results of observing morphological diversity of P. boryanum and P. duplex occurring in samples from Pond Okręt are presented. The same teratological forms that were collected in the water body in 1968-1969 continued to inhabit it also after over a dozen years, in 1984-1987. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/11089/15784 1996-01-01T00:00:00Z http://hdl.handle.net/11089/15783 Wpływ zbiornika Jeziorsko na fitoplankton środkowego odcinka rzeki Warty Galicka, Wanda; Lesiak, Teresa Phytoplankton was investigated in two localities in the Warta River located upstream and downstream of the Jeziorsko Dam Reservoir. Spring and summer peaks of algal development, dominated by diatoms (Bacillariophyceae) (66.7 to 81.0% of total phytoplankton abundance), were recorded. Green algae (Chlorophyta) constituted 7.7 to 38.4% while blue-green algae (Cyanophyia) from 1.3 to 13.3% of total phytoplankton abundance. The percentages of other algal groups were low. Correlations between the abundance of phytoplankton and temperature, concentration of nitrate nigrogen and phosphorus in water were determined. The occurrence of taxons abundantly inhabiting either both localities or individually associated with only one of them was recorded. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/11089/15783 1996-01-01T00:00:00Z http://hdl.handle.net/11089/15782 Okrzemki epifityczne występujące na plechach Cladophora glomerata i Vaucheria Rakowska, Barbara 96 taxa of epiphytic diatoms were identified on Cladophora glomerata in the Warta River. The dominant species (over 10%) were as fallows: Cocconeis pediculus Ehr., C. placentula Ehr., Rhoicosphenia abhreviata (Ag.) Lange- Bertalot, 58 taxa vere found in the Brda River; Achnanthes minutissima Kütz., Cocconeis pediculus Ehr., Cymbella minuta Hilse, Fragilaria vaucheriae (Kütz.) Pet., were prevalent. 43 taxa were distinguished on Vaucheria sp. in the Pisia River: Diatoma elongatum (Lyngb.) Ag., Navicula gregaria Donk., Synedra ulna (Nitzsch) Kütz., Synedra tabulala (Ag.) Kütz. Mon, 01 Jan 1996 00:00:00 GMT http://hdl.handle.net/11089/15782 1996-01-01T00:00:00Z