The presence of the fern Osmunda regalis L in Kolbuszowa forestry commission, Podkarpacie

Abstract

At natural sites in the Podkarpackie Plateau, in Maziarnia and Świerczów in Kolbuszowa Forestry Commission, in 2001 – 2003, morphological research was carried out on the protected fern Osmunda regalis L. The site at Świerczów was found by Peret and todays research is the first study of the state of the population. The research confirmed the high vulnerability of O. regalis to insufficient moisture in the soil. The constant draining of the terrain and rebuilding of the tree stand are unfavourable processes for O. regalis at those sites.