Scholarlink

<p>Analysis of the spatial structure was performed in 43 populations of five species of geophytic ephemeroids of European Russia, <i>Colchicum</i> s. l., in the years 2021–2024. The distribution patterns of individuals shown by the Ripley function <i>L</i>(<i>r</i>)–<i>r</i> were implemented in the spatstat package for the R programming language. Within the range of the genus, the occurrence frequency of populations with a random distribution type increased from north to south. In <i>C. laetum</i> and <i>C. bulbocodium</i> subsp. <i>versicolor</i>, the ranges of which extend along the geographic longitude on the Russian Plain, the populations with a contagious type of distribution of individuals were located exclusively along their northern and southern borders. Such a pattern was not observed in the species growing in the North Caucasus and mountainous Crimea. It has been shown that a random type of spatial distribution of individuals of geophytic ephemeroids indicates homogeneity and optimality of growing conditions, and any deviations from it arise as a result of the unfavorable impact of various environmental factors. At least in <i>Colchicum</i> species on the Russian Plain, precisely the global gradients of natural and climatic conditions across the species’ range, rather than the micro-relief, microclimate, or other locally manifested environmental factors are dominant in determining the type of distribution of individuals in populations. On the contrary, local environmental conditions appear to govern to a greater degree the spatial distribution type of individuals in those species of the genus the range of which primarily encompasses mountains and foothills. Elevation is not a limiting factor for the distribution type of individuals in the populations of <i>Colchicum</i> species.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Spatial Structure of Colchicum s. l. (Colchicaceae, Liliopsida) Populations in European Russia

  • 期刊论文

  • 发表日期：

    2025年12月1日

查看全文
  • A. S. Kashin,
  • V. S. Epifanov,
  • I. V. Shilova,
  • S. F. Efimenko,
  • R. A. Murtazaliev,
  • A. O. Kondratieva

摘要

Analysis of the spatial structure was performed in 43 populations of five species of geophytic ephemeroids of European Russia, Colchicum s. l., in the years 2021–2024. The distribution patterns of individuals shown by the Ripley function L(r)–r were implemented in the spatstat package for the R programming language. Within the range of the genus, the occurrence frequency of populations with a random distribution type increased from north to south. In C. laetum and C. bulbocodium subsp. versicolor, the ranges of which extend along the geographic longitude on the Russian Plain, the populations with a contagious type of distribution of individuals were located exclusively along their northern and southern borders. Such a pattern was not observed in the species growing in the North Caucasus and mountainous Crimea. It has been shown that a random type of spatial distribution of individuals of geophytic ephemeroids indicates homogeneity and optimality of growing conditions, and any deviations from it arise as a result of the unfavorable impact of various environmental factors. At least in Colchicum species on the Russian Plain, precisely the global gradients of natural and climatic conditions across the species’ range, rather than the micro-relief, microclimate, or other locally manifested environmental factors are dominant in determining the type of distribution of individuals in populations. On the contrary, local environmental conditions appear to govern to a greater degree the spatial distribution type of individuals in those species of the genus the range of which primarily encompasses mountains and foothills. Elevation is not a limiting factor for the distribution type of individuals in the populations of Colchicum species.