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Tree diversity reduces pest damage in mature forests across Europe

Guyot, Virginie and Castagneyrol, Bastien and Vialatte, Aude and Deconchat, Marc and Jactel, Hervé Tree diversity reduces pest damage in mature forests across Europe. (2016) Biology Letters, 12 (4). 1-5. ISSN 1744-9561

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Official URL: http://dx.doi.org/10.1098/rsbl.2015.1037

Abstract

Forest pest damage is expected to increase with global change. Tree diversity could mitigate this impact, but unambiguous demonstration of the diversity–resistance relationship is lacking in semi-natural mature forests. We used a network of 208 forest plots sampled along two orthogonal gradients of increasing tree species richness and latitudes to assess total tree defoliation in Europe. We found a positive relationship between tree species richness and resistance to insect herbivores: overall damage to broadleaved species significantly decreased with the number of tree species in mature forests. This pattern of associational resistance was frequently observed across tree species and countries, irrespective of their climate. These findings confirm the greater potential of mixed forests to face future biotic disturbances in a changing world.

Item Type:Article
Additional Information:Thanks to The Royal Society editor. The definitive version is available at https://royalsociety.org/ The original PDF of the article can be found at Biology Letters website : http://rsbl.royalsocietypublishing.org/
HAL Id:hal-01391249
ProdINRA Id:355659
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Université de Bordeaux (FRANCE)
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Deposited On:26 Oct 2016 12:56

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