TY - GEN A1 - Adamczyk, Kamila A1 - Jankowska-Błaszczuk, Małgorzata A1 - Przemyski, Alojzy A2 - Jakubowicz, Teresa. Red. PB - Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej KW - species richness KW - xerothermic grasslands KW - threatened species KW - ecological structure KW - ecotone KW - Ponidzie region T1 - Changes of species richness with special consideration of threatened species within the overgrowing xerothermic grassland in the forest clearing reserve of "Polana Polichno" in the Nida Basin (Małopolska Upland) ER -