To biology and ecology of Plantago media L. and P. major L. on the territory of the Samara region (demographic and vitality structure of cenopopulations)

The data of three-year studies of the demographic and vitality structure of cenopopulations of Plantago media L. and P. major L. on the territory of the Samara region (in forest, steppe phytocenoses and city parks) are presented. It was revealed that the anropogenic load of low and medium intensity does not have a negative effect on the state of cenopopulations. The species are highly liable, but sensitive to changes in climatic conditions.