Ochrona zasobów genowych a sukcesja roślinności w rezerwatach i parkach narodowych

An unexpected and uncontrollable succession of vegetation in national parks and reserves causes the impoverishment of a gene pool of plants. This process has been observed mainly in seminatural communities and distorted natural phytocoenoses. A programme of practical endeavours should be based on a conscious management of the succession. It has to take into account the entire caryologic, ecological and sociologic variability of each species as well as to lean on a thorough study of a degree of naturalness and dynamics of the communities in which the species exist.