http://hdl.handle.net/11089/15737 2026-04-05T23:09:38Z http://hdl.handle.net/11089/15774 Okrzemki (Bacillariophyceae) zbiorników wodnych Arboretum w Rogowie Żelazna-Wieczorek, Joanna The present study contains the results of investigations the taxonomic composition of diatoms in the water bodies of the alpine garden Arboretum in Rogów. It is the first study devoted to the diatoms of this area. 1993-01-01T00:00:00Z http://hdl.handle.net/11089/15773 Ogólna charakterystyka fitoplanktonu Zbiornika Sulejowskiego w latach 1988-1990 Galicka, Wanda; Lesiak, Teresa; Rzerzycha, Ewa In 1988-1990 phytoplankton was investigated in the Sulejów Reservoir. Two developmental peaks were recorded: a spring and an autumn ones; each of them was dominated by diatoms, which constituted 80.0 to 97.5% of total phytoplankton abundance. In all months Siephanodiscus hantzschii Grun. was the dominant species. The subdominants were phytoflagellates, whose intensive development was observed in the period of a decrease in diatom abundance and a decline in abundance in the period of zooplankton domination. Zooplankton was dominated by Daphnia cucullata and Bosmina coregoni. 1993-01-01T00:00:00Z http://hdl.handle.net/11089/15772 Występowanie niektórych gatunków chwastów na glebach różnych kompleksów województwa skierniewickiego. Część II Warcholińska, A. UrszuIa The study presents data on the occurrence frequency of 19 species of weeds. The degree of weediness of cultivated plants by these species in the soils of various soil-agricultural complexes is described. The relationship species-habitat is discussed. Praca wykonana w ramach resortowego problemu 402. 1993-01-01T00:00:00Z http://hdl.handle.net/11089/15771 Wyznaczanie optymalnej sieci zagłębień śródpolnych w celu ochrony zasobów gatunków dziko rosnących w krajobrazie rolniczym Kucharski, Leszek; Samosiej, Ludwik Employing a developed equation for determining the coefficient of naturalness a valorization of 55 randomly selected mid-field depressions occurring in the South Kujawy region was carried out to estimate the naturalness of their floras. While investigating the dependence between the number of species and increase in areas of "kettle lakes" it was calculated that at least 20 mid-field depressions of total area not smaller than 14.5 ha per each 10 km² should be preserved to protect 90% of plants growing in the investigated habitats. 1993-01-01T00:00:00Z