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Polyvariance of Ontogeny of Alluvial and Nonalluvial Species of Salix L. (Salicaceae) of the Boreal Zone of Eurasia

Authors
  • Nedoseko, O. I.1
  • 1 Arzamas Branch, Lobachevsky University, Arzamas, 607220, Russia , Arzamas (Russia)
Type
Published Article
Journal
Contemporary Problems of Ecology
Publisher
Pleiades Publishing
Publication Date
Sep 01, 2021
Volume
14
Issue
5
Pages
408–420
Identifiers
DOI: 10.1134/S1995425521050073
Source
Springer Nature
Keywords
Disciplines
  • Article
License
Yellow

Abstract

Abstract—This paper presents a review of the ontogeny of 11 lifeforms using the example of 16 boreal species of Salix relating to two ecological groups (alluvial and nonalluvial). At the intraspecific level, among the studied species, the greatest diversity of lifeforms is detected in alluvial species, while the lowest is in nonalluvial species. A polyvariance of development is detected in the studied species: structural and dynamic. As part of structural polyvariance, morphological (as a result of which two and more (up to four) lifeforms are formed in the adult state) and dimensional (expressed in a change in the size and life state of an individual within the same ontogenetic state) were distinguished. The dynamic polyvariance is associated with a different duration of pre-generative and generative periods of ontogeny. A prevalence of the generative period of ontogeny over the pregenerative is observed in all alluvial and most nonalluvial species. In individuals of two lifeforms of nonalluvial species, the pregenerative period prevails during ontogeny. Alluvial species master a narrower range of environmental conditions as compared with nonalluvial ones. At the intraspecific level, among the studied species, the greatest diversity of lifeforms is detected in alluvial species (two to four lifeforms in each species), while the lowest is in nonalluvial species (one to three lifeforms in each species). Alluvial species are characterized by the presence of a small number of long shoots, a large number of shoots of average length, and a smaller number of short ones, which determines their greater height when compared to nonalluvial species.

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