Ontogenetic structure and assessment of state of Thymus mongolicus (Lamiaceae) coenopopulations in southern Siberia

摘要

The ontogenetic structure of eight Thymus mongolicus coenopopulations in southern Siberia has been studied and an assessment of their state is made. It is established that the studied coenopopulations had left-hand, central, and bimodal spectrum types. It is shown that the optimal state of coenopopulations is achieved in true petrophytic steppes. The organism optimum and population optimum do not coincide in the steppes on a moving substrate or under the influence of grazing.