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<p>The number of naturalizing non-native species continues to increase in the Anthropocene, with numerous species becoming invasive even after prolonged lag phases. A notably overlooked group among invasive trees and shrubs is the Rosaceae family, with <i>Prunus cerasifera</i> emerging as one of the species whose effects on forest ecosystems remain poorly understood despite its wide occurrence across the introduced range. We aimed to evaluate how the invasion of <i>P. cerasifera</i> affects the taxonomical, functional, and phylogenetic diversity of the understory of the early successional stages of oak-hornbeam forests. Using the <i>P. cerasifera</i> invasion gradient, defined as increasing cover of this invasive tree, and implementing the ordination and linear regression methods, we found the prominent effects of <i>P. cerasifera</i> on all three examined metrics of plant species diversity. We revealed that increasing the cover of <i>P. cerasifera</i> not only increased species richness but also altered the phylogenetic structure of the understory by introducing new clades. Additionally, it influenced community assembly processes by reducing the importance of habitat filtering and strengthening the role of interspecific competition in shaping the community structure. Our study presents the first assessment of <i>P. cerasifera</i>’s impact on understory diversity along its invasion gradient, enabling a comprehensive evaluation of invasion-driven effects on the functioning of forest ecosystems during the early stages of succession. Our findings are not only essential for formulating effective management and conservation strategies but also critical for guiding how invasive tree species can influence the trajectories and mechanisms of the secondary forest succession.</p>

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Invasive Prunus cerasifera alters understory diversity in the early successional oak-hornbeam forests

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月2日

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  • Patryk Czortek,
  • Wojciech Adamowski,
  • Marcin K. Dyderski

摘要

The number of naturalizing non-native species continues to increase in the Anthropocene, with numerous species becoming invasive even after prolonged lag phases. A notably overlooked group among invasive trees and shrubs is the Rosaceae family, with Prunus cerasifera emerging as one of the species whose effects on forest ecosystems remain poorly understood despite its wide occurrence across the introduced range. We aimed to evaluate how the invasion of P. cerasifera affects the taxonomical, functional, and phylogenetic diversity of the understory of the early successional stages of oak-hornbeam forests. Using the P. cerasifera invasion gradient, defined as increasing cover of this invasive tree, and implementing the ordination and linear regression methods, we found the prominent effects of P. cerasifera on all three examined metrics of plant species diversity. We revealed that increasing the cover of P. cerasifera not only increased species richness but also altered the phylogenetic structure of the understory by introducing new clades. Additionally, it influenced community assembly processes by reducing the importance of habitat filtering and strengthening the role of interspecific competition in shaping the community structure. Our study presents the first assessment of P. cerasifera’s impact on understory diversity along its invasion gradient, enabling a comprehensive evaluation of invasion-driven effects on the functioning of forest ecosystems during the early stages of succession. Our findings are not only essential for formulating effective management and conservation strategies but also critical for guiding how invasive tree species can influence the trajectories and mechanisms of the secondary forest succession.