Crown structure of Quercus robur L. in southwest of Kostroma region
Miroslav N. Stamenov, Candidate of Biological Sciences, Junior Researcher
Samara Federal Research Scientific Center RAS, Institute of Ecology of the Volga River Basin RAS, Togliatti, Russia, mslv-eiksb@inbox.ru, https://orcid.org/0000-0002-2500-7925
Abstract
The article studies the structural features of the crown in Quercus robur L. specimens growing in floodplain communities of the lower reaches of the Kostroma River. The crown structure was analyzed in specimens of the pregenerative and generative periods of ontogenesis. Morphometric parameters were measured, the growth direction, the character of growth, the plan of organization of the main skeletal axes of the crown were established. The trunk (axis of the first visible order) and the skeletal axes of the crown — branches from the trunk (axes of the second visible order) and branches of the second order (axes of the third visible order) were studied. The features of the placement of branches along the trunk are described. It is shown that under different lighting conditions, the predominant method of crown formation is the formation of an orthotropic trunk with single forked structures, from which mainly ascending branches depart. In the mature generative stage, the proportion of individuals with a significant participation of polyarchic elements in the trunk and branches, as well as with a long zone of plagiotropic branches on the trunk, increases.
Key words
Pedunculate oak, biomorphology, crown structure, plan of organization of the shoot systems, trunk, branches.
Acknowledgments: The work was carried out within the framework of the state task of the Institute of Ecology of the Volga River Basin RAS “Comprehensive assessment of the state of biological resources and monitoring of natural ecosystems of the Volga basin” (No. 1024032600230-5-1.6.19). The author is grateful to M. A. Lemesheva for assistance in conducting field research and to the anonymous reviewers for advice and comments that helped to improve the manuscript
For citation:
Stamenov M. N. Crown structure of Quercus robur L. in southwest of Kostroma region. Vestnik of Orenburg State Pedagogical University. Electronic Scientific Journal, 2025, no. 2 (54), pp. 84—95. DOI: https://doi.org/10.32516/2303-9922.2025.54.3.
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