Plant communities with naturalized Elaeagnus angustifolia L. as a new vegetation element in Altai Krai (Southwestern Siberia, Russia)

Acta Biologica Sibirica

article

Alena A. Shibanova¹  Natalya V. Ovcharova¹ 

[1] Altai State University

关键词: Geobotanical relevés;    invasion;    Kulunda steppe;    naturalized plants;    ordination;    Russian olive;    syntaxonomy;   

DOI  :  10.3897/abs.7.e58204

学科分类：外科医学

来源: Pensoft

【 摘 要 】

Elaeagnus angustifolia L. (Russian olive) is a deciduous small tree or large multi-stemmed shrub thatbecomes invader in different countries all other the world. It is potentially invasive in some regionsof Russia. In the beginning of 20th century, it was introduced to the steppe region of Altai Krai (Russia, southwestern Siberia) to prevent wind erosion. During last 20 years, Russian olive starts to createits own natural stands and to influence on native vegetation. This article presents the results of ecocoenotic survey of natural plant communities dominated by Elaeagnus angustifolia L. first described forSiberia and the analysis of their possible syntaxonomic position. The investigation conducted duringsummer season 2012 in the steppe region of Altai Krai allows revealing one new for Siberia associationElytrigio repentis–Elaeagnetum angustifoliae and no-ranged community Bromopsis inermis–Elaeagnus angustifolia which were included to the Class Nerio–Tamaricetea, to the Order Tamaricetaliaramosissimae. During the study, the following special features of communities have been described:polydominance of herbal layer, anthropogenic and grazing load, variation of the species richness, plantcover and vertical stratification into layers. These peculiarities mostly prove unestablished characterof communities, all of them are relatively young (25–30 years). Russian olive shrubberies varies inmoisture and saline regime, which connected with their existence in different landforms (lake alluvialplains, gentle slopes of lakes, low lake terraces).

【 授权许可】

CC BY