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Journal Articles Journal of Applied Ecology Year : 2022

Emerging stability of forest productivity by mixing two species buffers temperature destabilizing effect

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Miren del Río
Hervé Jactel
Lluís Coll
Jorge Aldea
Jakub Cerný
Sonia Condés
Stig‐olof Holm
  • Function : Author
Gro Hylen
  • Function : Author
Aris Jansons
  • Function : Author
Viktor Kurylyak
  • Function : Author
Fabio Lombardi
Bratislav Matović
  • Function : Author
Marek Metslaid
Renzo Motta
Thomas Nord-Larsen
Arne Nothdurft
Jan den Ouden
  • Function : Author
Maciej Pach
Marta Pardos
Charlotte Poeydebat
  • Function : Author
Quentin Ponette
Tomas Pérot
Andrés Bravo-Oviedo
Ditlev Otto Juel Reventlow
  • Function : Author
Roman Sitko
  • Function : Author
Vit Sramek
Mathias Steckel
Miroslav Svoboda
  • Function : Author
Kris Verheyen
Sonja Vospernik
Barbara Wolff
  • Function : Author
Tzvetan Zlatanov

Abstract

The increasing disturbances in monocultures around the world are testimony to their instability under global change. Many studies have claimed that temporal stability of productivity increases with species richness, although the ecological fundamentals have mainly been investigated through diversity experiments. To adequately manage forest ecosystems, it is necessary to have a comprehensive understanding of the effect of mixing species on the temporal stability of productivity and the way in which it is influenced by climate conditions across large geographical areas. Here, we used a unique dataset of 261 stands combining pure and two-species mixtures of four relevant tree species over a wide range of climate conditions in Europe to examine the effect of species mixing on the level and temporal stability of productivity. Structural equation modelling was employed to further explore the direct and indirect influence of climate, overyielding, species asynchrony and additive effect (i.e. temporal stability expected from the species growth in monospecific stands) on temporal stability in mixed forests. We showed that by adding only one tree species to monocultures, the level (overyielding: +6%) and stability (temporal stability: +12%) of stand growth increased significantly. We identified the key effect of temperature on destabilizing stand growth, which may be mitigated by mixing species. We further confirmed asynchrony as the main driver of temporal stability in mixed stands, through both the additive effect and species interactions, which modify between-species asynchrony in mixtures in comparison to monocultures. Synthesis and applications. This study highlights the emergent properties associated with mixing two species, which result in resource efficient and temporally stable production systems. We reveal the negative impact of mean temperature on temporal stability of forest productivity and how the stabilizing effect of mixing two species can counterbalance this impact. The overyielding and temporal stability of growth addressed in this paper are essential for ecosystem services closely linked with the level and rhythm of forest growth. Our results underline that mixing two species can be a realistic and effective nature-based climate solution, which could contribute towards meeting EU climate target policies.
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Dates and versions

hal-03775583 , version 1 (12-09-2022)

Licence

Attribution - NonCommercial - CC BY 4.0

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Miren del Río, Hans Pretzsch, Ricardo Ruiz-Peinado, Hervé Jactel, Lluís Coll, et al.. Emerging stability of forest productivity by mixing two species buffers temperature destabilizing effect. Journal of Applied Ecology, 2022, pp.1-12. ⟨10.1111/1365-2664.14267⟩. ⟨hal-03775583⟩

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