The study contains a characterization of forest communities of the Puszcza Mariańska reserve, taking into account their antropogenous deformations. 5 associations and 4 subassociations were distinguished: Circaeo-Alnetum, ...

In the present paper a list of 4 species of mosses and 38 rare species of vascular plants from the southern part of the Kujawy region is given.

The study contains the descriptions of 14 taxons of the genus Pediastrum occurring in the Łódź City and its vicinities. Observations were conducted using a light and an electron scanning microscope, paying particular ...

In July 1982 desmids cells enclosed in mucilaginous sheaths were recorded during drought in the Bagno Przerębiec transitional peatbog. They were the specimens of Cosmarium contraetum Kirch., Cosmoastrum punctulatum ...

The work contains some remarks on the taxonomy and ecology of the 23 diatom taxons from the genus Navicula Bory to be found in the microbenthos of 3 rivers of Central Poland: Bzura, Mroga and Rawka. The data concerning ...

Sampling was done in one site established in the Luciąża River on for occasions over the annual cycle. Observation data are presented in contingency tables, and their significance tested with the χ² test. Results obtained ...

The study presents data on the occurrence frequency of 9 weed species. Their distribution and degrees of weediness of given cultivated plants and soil-agricultural complexes are presented. Attention is paid to interdependence ...