sevinПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛPovolzhskiy Journal of Ecology1684-73182541-8963Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.10.35885/1684-7318-2021-1-35-46sevin-248Research ArticleСтатьиПространственная структура ценопопуляций Globularia bisnagarica L. (Plantaginaceae, Magnoliopsida)Spatial structure of Globularia bisnagarica L. (Plantaginaceae, Magnoliopsida) coenopopulationshttps://orcid.org/0000-0001-5000-8914КондратьеваА. О.KondratievaA. O.

Кондратьева Анна Олеговна

Россия, 410012, г. Саратов, ул. Астраханская, д. 83

Anna O. Kondratieva

83 Astrakhanskaya St., Saratov 410010, Russia

popova.ao@mail.ruhttps://orcid.org/0000-0002-9948-7298ПархоменкоА. С.ParkhomenkoA. S.

Пархоменко Алена Сергеевна

Россия, 410012, г. Саратов, ул. Астраханская, д. 83

Alena S. Parkhomenko

83 Astrakhanskaya St., Saratov 410010, Russia

parkhomenko_as@mail.ruhttps://orcid.org/0000-0002-2248-1285БогословА. В.BogoslovA. V.

Богослов Артём Валерьевич

Россия, 410012, г. Саратов, ул. Астраханская, д. 83

Artem V. Bogoslov

83 Astrakhanskaya St., Saratov 410010, Russia

dandelioncave@mail.ruhttps://orcid.org/0000-0002-9828-4229ШиловаИ. В.ShilovaI. V.

Шилова Ирина Васильевна

Россия, 410012, г. Саратов, ул. Астраханская, д. 83

Irina V. Shilova

83 Astrakhanskaya St., Saratov 410010, Russia

schiva1952@yandex.ruhttps://orcid.org/0000-0002-2342-2172КашинА. С.KashinA. S.

Кашин Александр Степанович

Россия, 410012, г. Саратов, ул. Астраханская, д. 83

Alexandr S. Kashin

83 Astrakhanskaya St., Saratov 410010, Russia

kashinas2@yandex.ruСаратовский национальный исследовательский государственный университет имени Н. Г. ЧернышевскогоРоссияSaratov State UniversityRussian Federation202118052021013546Copyright © Кондратьева А.О., Пархоменко А.С., Богослов А.В., Шилова И.В., Кашин А.С., 20212021Кондратьева А.О., Пархоменко А.С., Богослов А.В., Шилова И.В., Кашин А.С.Kondratieva A.O., Parkhomenko A.S., Bogoslov A.V., Shilova I.V., Kashin A.S.This work is licensed under a Creative Commons Attribution 4.0 License.https://sevin.elpub.ru/jour/article/view/248

Представлены результаты изучения пространственной структуры 18-ти цено- популяций Globularia bisnagarica L. на территории Саратовской, Самарской, Ульяновской, Оренбургской областей и Республики Татарстан с использованием пакета Spatstat среды статистического программирования R. Выявлена тенденция к образованию агрегаций, что может быть обусловлено преобладанием семенного типа размножения и особенностями диссеминации изучаемого вида (барохория), а также приуроченностью местообитаний к эрозионным формам рельефа, отличающимся высокой неоднородностью условий (склоны водоразделов, балок, ложбины стока и др.). Установлено, что большинство ценопопуляций G. bisnagarica произрастает в условиях сильного и умеренного задернения. Однако, несмот- ря на это, в подобных местообитаниях G. bisnagarica в сообществах встречается обильно, и является доминантом наряду с такими видами как: Stipa pennata, Bromus inermis, Salvia nutans, Elytrigia repens, Poa compressa и др. Влияние межвидовой конкуренции в условиях заселения кальцефильных фитоценозов эврибионтными степными злаками так же вносит определенный вклад в формирование пространственного рисунка ЦП.

The paper presents the results of the spatial distribution analysis of 18 Globularia bisnagarica L. coenopopulations in the Saratov, Samara, Ulyanovsk and Orenburg regions and the Republic of Tatarstan. The analysis was carried out with the Spatstat package of the R environment for statistical computing. The research reveals an aggregation tendency for the G. bisnagarica coenopopulations. It is suggested that this tendency may be attributed to the prevalence of seed reproduction and certain peculiarities of dissemination (barochory) in the studied coenopopulations as well as to the confinement of the species to eroded landforms (slopes of watersheds, gullies, runoff hollows, etc.) characterized by high heterogeneity of environmental conditions. It has been established that the majority of G. bisnagarica coenopopulations grow in heavily or moderately sodded habitats. Nevertheless, in the studied communities, G. bisnagarica occurs abundantly and dominates along with Stipa pennata, Bromus inermis, Salvia nutans, Elytrigia repens, Poa compressa, etc. Finally, the spatial structure of G. bisnagarica coenopopulations is impacted by the interspecific competition in calciphilous phytocenoses under the invasion of eurybiontic steppe grasses.

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The authors declare that there are no conflicts of interest present.