Ontogenetic structure of the coenotic populations of Medicago cancellata Bieb. (Fabaceae) in habitats with varying degrees of anthropogenic load

Medicago cancellata Bieb. (Fabaceae) is a rare species on the territory of the Russian Federation and is included in the federal and many regional Red Books. It occurs predominantly in communities of stony steppes on steep slopes of watersheds. The species range is diffuse primarily due to the destruction of steppe habitats in central Russia. In the Middle Volga basin (in the Samara and Orenburg regions), this is a vulnerable species growing in a small number of habitats and using a narrow range of ecological and phytocenotic factors. In addition, very often these habitats experience a significant anthropogenic load, which affects the composition of the ontogenetic spectrum of the coenotic populations of the species and even leads to the loss of a representative from plant communities. We studied the features of the ontogenetic.