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The characteristics of communities found in unploughed stubble fields of the Mazowiecki Landscape Park and its agricultural buffer zone are presented in the paper. The association Echinochloo-Setarietum divided into a typical variant, the variant with Galinsoga parviflora, and the variant with Bidens tripartite, was the most frequently noted and floristically differentiated association. Patches of Digitarietum ischaemi were also frequently observed in stubble fields on the poorest habitats. Rarely, on fertile soils, small patches of floristically rich communities with Veronica agrestis were recorded. Periodically, excessively wet habitats were seldom occupied by the speciesrichest phytocoenoses of Centunculo-Anthoceretum punctati. Single patches of the community with Setaria pumila, the form with Aphanes arvensis, were observed only in the south-eastern part of the Park.
In the present paper, the ruderal vegetation of a small town is characterized. Based on phytosociological studies, 43 associations and 5 communities were distinguished in eight functional and spatial complexes. For most of them, the diagnostic communities were identified and compared with the literature. The aim of this study was to analyze the relationship between the type of ruderal community and spatial structure of the town, and to determine whether there are any differences in the ecological requirements of ruderal species found in those complexes based on selected Ellenberg indicator values. The aim of this study was to analyze the relationship between the type of ruderal community and spatial structure of the town, and to determine whether there are any differences in the ecological requirements of ruderal species found in those complexes based on selected Ellenberg indicator values. Differences in median values for different complexes were evaluated using the Kruskal-Wallis test.
Hacquetia epipactis (Scop.) DC. of the family Apiaceae is one of the most peculiar species in the Polish flora. Outside of Pogórze Cieszyńskie and Ślądk Opolski, it is found at a few isolated sites in southern Poland. It has been protected since 2004 as a rare species. It is listed as vulnerable in the Polish Red Book of Vascular Plants. This paper presents a comparison of two insular populations of H. epipactis in Pogórze Wielickie.
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