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Research article - Peer-reviewed, 2022

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

del Rio, Miren; Pretzsch, Hans; Ruiz-Peinado, Ricardo; Jactel, Herve; Coll, Lluis; Lof, Magnus; Aldea, Jorge; Ammer, Christian; Avdagi, Admir; Barbeito, Ignacio; Bielak, Kamil; Bravo, Felipe; Brazaitis, Gediminas; Cerny, Jakub; Collet, Catherine; Condes, Sonia; Drossler, Lars; Fabrika, Marek; Heym, Michael; Holm, Stig-Olof;
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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.

Keywords

additive effect; climate effect; forest ecosystems productivity; mixed forests; overyielding; species asynchrony; temporal stability

Published in

Journal of Applied Ecology

2022, volume: 59, number: 11, pages: 2730-2741
Publisher: WILEY

Authors' information

del Rio, Miren
Consejo Superior de Investigaciones Cientificas (CSIC)
Pretzsch, Hans
Technical University of Munich
Ruiz-Peinado, Ricardo
Consejo Superior de Investigaciones Cientificas (CSIC)
Jactel, Herve
Universite de Bordeaux
Coll, Lluis
Universitat de Lleida
Swedish University of Agricultural Sciences, Southern Swedish Forest Research Centre
Swedish University of Agricultural Sciences, Southern Swedish Forest Research Centre
Ammer, Christian
University of Gottingen
Avdagic, Admir
University of Sarajevo
Barbeito, Ignacio
University of British Columbia
Bielak, Kamil
Warsaw University of Life Sciences
Bravo, Felipe
Universidad de Valladolid
Brazaitis, Gediminas
Vytautas Magnus University
Cerny, Jakub
Forestry and Game Management Research Institute
Collet, Catherine
INRAE
Condes, Sonia
Universidad Politecnica de Madrid
Drossler, Lars
Ilia State University
Fabrika, Marek
Technical University Zvolen
Heym, Michael
Technical University of Munich
Holm, Stig-Olof
Umea University
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UKÄ Subject classification

Forest Science
Ecology

Publication Identifiers

DOI: https://doi.org/10.1111/1365-2664.14267

URI (permanent link to this page)

https://res.slu.se/id/publ/118849