Abstract
The study of the sexual structure of Juniperus polycarpos C. Koch was carried out in the popula-tions of Piedmont (Talginskaya, Dubkinsko-Miatlinskaya, and Gubdenskaya) and highmountain (Tlyaratinskaya and Tsumadinskaya) Dagestan. In total, 1009 individuals were studied within the entire range of the species in the territory of Dagestan, in which biometric parameters were measured. In populations, polygamous-dioecious individuals of J. polycarpos were identified, and a quantitative ratio of female, male, and polygamous-dioecious individuals was established. Biometric indicators of individuals of different sexes and their index indicators have been determined. The ratio of females and males in the Dagestan populations of J. polycapos, as well as for other Juniperus species in general, may be related to the ecological conditions of the environment (an increase in the altitude above sea level of the place of growth and more arid conditions). At the same time, the change in the ratio of the height and diameter of the crown in trees of different sex groups may depend on the age of individu-als in the population, the timing of their entry into the generative state, and other processes.
Highlights
При решении задач охраны редких видов растений популяционные исследования становятся незаменимыми
1009 individuals were studied within the entire range of the species in the territory of Dagestan, in which biometric parameters were measured
The change in the ratio of the height and diameter of the crown in trees of different sex groups may depend on the age of individuals in the population, the timing of their entry into the generative state, and other processes
Summary
Дубкинско-Миатлинская популяция расположена на западном склоне хр. Здесь можжевеловые редколесья расположены на высотах от 400 до 600 м. Губденская популяция расположена в Центрально-предгорном Дагестане в 5 км от с. J. polycarpos произрастает на южных отрогах хр. Тляратинская популяция (Чадоколобо-Анцухский участок) расположена на южных, юго-западных, западных, юго-восточных и восточных склонах отрогов Богосского хр. Можжевеловые редколесья здесь произрастают на высотах от 1 342 до 1 589 м над ур. Моря; Цумадинская популяция (Гадаичи-Эчединский участок) расположена вдоль р. Андийское Койсу, на отрогах Кад Богосского хр., близ с. Районы распространения Juniperus polycarpos в Дагестане: 1 – Талгинское ущелье, 2 – Губденский участок, 3 – Дубкинско-миатлинский участок, 4 – Чадоколобо-. 5 – Гадаичи-Эчединский участок [Distribution areas of Juniperus polycarpos in Dagestan: 1 – Talginsky gorge, 2 – Gubdensky section, 3 – Dubkinsko-miatlinsky section, 4 – Chadoko-lobo-Antsukhsky section, 5 – Gadaichi-Echedinsky section]
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