DIVERSITY OF ECOLOGICAL GROUPS OF SPECIES IN CULTURAL FORESTS OF SOUTH BOHEMIA

Species diversity is important, nevertheless not the sole diversity, which could be studied in ecosystems. Also the diversity of ecological groups of species (hereinafter called ecological diversity) is of importance. A functional relation between stability and ecological diversity is supposed. To estimate the ecological diversity, a new bioindication method (IDGAI) has been used, based on the system of eco-indices (for used system see Ellenberg, 1974). The relation of species diversity, number of species, and indices of ecological diversity related to six environmental factors (light conditions, temperature, degree of oceanity/continentality, soil moisture, soil reaction, nitrogen activity) has been studied within the cultural forests of South Bohemia.