Wpływ zagospodarowania lasu na stan zachowania sasanki otwartej Pulsatilla patens (L.) Mill.

This paper presents a study on a population of Pulsatilla patens conducted in 2012 in the Myszyniec Forest District in Natura 2000 area ‘Myszynieckie Bory Sasankowe’ in the Kurpie forest (NE Poland). The purpose of the study was to determine the population structure of Pulsatilla patens, especially with regard to abundance, density, and percentage of generative plants in the total population. Correlations were examined between these population features and selected environmental characteristics including ecological indicator values, community layer coverage, number of species group. For the evaluation of the linear relationship between the variables, Spearman's correlation coefficient was used. The research confirmed a significant effect of light availability, clear cuttings areas on all mean values of such indicators of plants as number of flowers, number of plants, share of vegetative and generative plants.