The importance of species addition ‘versus’ replacement varies over succession in plant communities after glacier retreat - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Nature Plants Year : 2024

The importance of species addition ‘versus’ replacement varies over succession in plant communities after glacier retreat

Pritam Chand
Antoine Rabatel
Nurai Urseitova
  • Function : Author
Yan Yang
  • Function : Author
Vitalii Zaginaev
  • Function : Author
Andrea Zerboni
Anaïs Zimmer
Pierre Taberlet
  • Function : Author
Guglielmina Adele Diolaiuti
  • Function : Author
Jerome Poulenard
  • Function : Author
Wilfried Thuiller
  • Function : Author
Marco Caccianiga
Gentile Francesco Ficetola
  • Function : Author

Abstract

The mechanisms underlying plant succession remain highly debated. Due to the local scope of most studies, we lack a global quantification of the relative importance of species addition 'versus' replacement. We assessed the role of these processes in the variation (β-diversity) of plant communities colonizing the forelands of 46 retreating glaciers worldwide, using both environmental DNA and traditional surveys. Our findings indicate that addition and replacement concur in determining community changes in deglaciated sites, but their relative importance varied over time. Taxa addition dominated immediately after glacier retreat, as expected in harsh environments, while replacement became more important for late-successional communities. These changes were aligned with total β-diversity changes, which were more pronounced between early-successional communities than between late-successional communities (>50 yr since glacier retreat). Despite the complexity of community assembly during plant succession, the observed global pattern suggests a generalized shift from the dominance of facilitation and/or stochastic processes in early-successional communities to a predominance of competition later on.
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Dates and versions

hal-04411640 , version 1 (23-01-2024)

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Isabel Cantera, Alexis Carteron, Alessia Guerrieri, Silvio Marta, Aurélie Bonin, et al.. The importance of species addition ‘versus’ replacement varies over succession in plant communities after glacier retreat. Nature Plants, 2024, ⟨10.1038/s41477-023-01609-4⟩. ⟨hal-04411640⟩
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