Struktura populacji listery jajowatej [Listera ovata] oraz kukulki krwistej Dactylorhiza incarnata] w obrebie uzytkow ekologicznych w poludniowo-zachodniej czesci Poznania

Two new localities of orchids: Listera ovata and Dactylorhiza incarnata were found during the floristic investigations carried out in 1996 on the area of ecological uselands “Kopanina I” and “Kopanina II”, situated in the south-west part of Poznań. In the years 1997-1999 the changes of acreage and of population structure of both taxa were observed. Orchids grow in the conditions of strong anthropopressure, on the habitats of clearly secondary nature. However, the significant changes in the number and in the form of individuals were not noted.