The structure of coenopopulations of two species of the genus Scutellaria in different years

The abundance, ecological density, and ontogenetic structure of the coenopopulations of Scutellaria tuvensis and S. grandiflora in different years have been studied. In 2012, a left–sided spectrum was formed in coenopopulations (CP) 1, 4, and 5, in CP 2 it was right-sided with a peak in old generative individuals, and in CP 3 it was centered. In 2021, a left-sided spectrum is formed in all CP, and a significant increase in the number of individuals of the pregenerative period and the young generative state has been established in CP 1, 2, and 4. The increase in the number of young individuals occurs as a result of increased rainfall in the region. In communities, due to a decrease in grazing, there was an increase in total projective cover (TPC). In CP 1, 2, 4, and 5, a negative correlation was found between TPC and the ecological density of individuals; the higher the TPC, the fewer Scutellaria individuals. It was found that individuals of S. grandiflora and S. tuvensis are not found at sites with TPC above 40%.