Efficiency of protecting populations of Astragalus cornutus Pall. in specially protected natural territories of regional significance of the Samara region

Astragalus cornutus Pall. populations were studied in 9 natural monuments of regional significance in the Samara region and in 4 unprotected sites. The features of the population structure are revealed, the type of populations is determined by the criterion «delta-omega». The effectiveness of species protection in the region is insufficient; regulation of the anthropogenic load and the creation of new natural monuments are required.