Types of populations of some rare species of Fabaceae plants in the Samara region

Complex monitoring of vegetative cover of valuable natural territories in the Samara region is carried out using population ontogenetic research methods. The aim of the work is to determine the types of populations of rare species of leguminous plants in the Samara region. The objects of research are rare representatives of the family Legumes. Since 2000, 1807 cenopopulations for 18 rare species included in the regional Red Data Book have been examined. The analysis of the ontogenetic structure of cenotic populations of rare plants convincingly demonstrates the legitimacy of protecting these taxa in the region. It was revealed that 8% of the cenopopulations should be considered temporarily extinct, 86.4% are unstable, only 5.6% are promising, and there are no invasive types of populations among them. The results of monitoring of the populations indicate the negative impact of different types of economic exploitation on the vegetation cover of the specially protected natural areas of the Samara Region. The structural features of the cenopopulations, their dynamics and vitality state testify to the deterioration of the general state of the vegetation cover of the examined natural complexes.