Peculiarities of formation of Setaria viridis populations in an urbanized environment

摘要

The peculiarities of population ecology of ruderal species in the urbanized environment are studied using the example of Setaria viridis. The results of a comparative analysis of morphometric status and ontogenetic and vitality structures of plant populations in an urban area are presented. The plasticity and variability of plant individuals range from 7.5 to 133%. Under stressful urban conditions, the structural organization of plant populations is rearranged and the living condition of plant individuals decreases 3-4 times. Normal mature and maturing vegetative populations form at the first steps of the urbanization gradient, and normal transition-type populations form at the final step.