Ecodiagrams of common species of the forest herb layer in the Roztocze National Park

The paper presents in graphic standardised form ("ecodiagrams") the conditions in which 24 common species of the herb layer of forest communities occur in the Roztocze National Park. After determining the soil type, its mechanical composition, active and exchangeable acidity, humus content and the content in the rhizosphere layer of nutrient components essential for plants, such as P, K, Na, Ca. Mg. AI, ammonium nitrogen and nitrate nitrogen, the habitats of common plants of the forest from the class Querco-Fagetea were classified as meso-, eu-meso- and cutrophic. Forest plants connected with communities from the class Vaccinio-Piceetea (Hierncium lachenalii Gmel., Melampyrum pratense L., Trientalis eurnpaea L., Vaccinium myrtillus L.) are generally associated with fresh, moderately poor and quite frequently also mesotrophic soils. Only Vaccinium vitis-idaea L. is a local species of dry hungry soils, poor in mineral and organic components. The group of accompanying species such as Fragaria vesca L., Galium vernum Scop., Luzula pilosa (L.) Willd., Mycelis ruralis (L.) Dum. and Oxalis ucetosella L.. show a much wider ecological amplitude-from oligotrophic to eutrophic habitats