Contrasting effects of tree species and genetic diversity on the leaf-miner communities associated with silver birch

Autor: Bastien Castagneyrol, Julia Koricheva, Walter Durka, Glenn R. Iason, Sandra Barantal, Simon Morath
Přispěvatelé: School of Biological Sciences, Royal Holloway [University of London] (RHUL), Écotron Européen de Montpellier, Centre National de la Recherche Scientifique (CNRS), Biodiversité, Gènes & Communautés (BioGeCo), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), The James Hutton Institute, Forest Research [Great Britain]
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Oecologia
Oecologia, Springer Verlag, 2019, 189 (3), pp.687-697. ⟨10.1007/s00442-019-04351-x⟩
ISSN: 0029-8549
1432-1939
Popis: Both species and genetic diversity of plant communities can affect insect herbivores, but a few studies have compared the effects of both diversity levels within the same experimental context. We compared the effects of tree species and genetic diversity on abundance, species richness, and β-diversity of leaf-miner communities associated with silver birch using two long-term forest diversity experiments in Finland where birch trees were planted in monocultures and mixtures of birch genotypes or other trees species. Although both abundance and species richness of leaf miners differed among birch genotypes at the tree level, birch genetic diversity had no significant effect on miner abundance and species richness at the plot level. Instead, birch genetic diversity affected leaf-miner β-diversity with species turnover being higher among trees within genotypic mixtures than among trees within monoclonal plots. In contrast, tree species diversity had a significant negative effect on both leaf-miner abundance and species richness at plot level, but no effect on miner β-diversity. Significant tree species diversity effects on leaf-miner abundance and species richness were found only in plots with high tree density. We have demonstrated that plant species and genetic diversity play important but contrasting roles in structuring associated herbivore communities. Tree species diversity largely affects miner abundance and species richness, whereas tree genetic diversity affects miner β-diversity. These results have important implications for conservation and management of woodlands. Electronic supplementary material The online version of this article (10.1007/s00442-019-04351-x) contains supplementary material, which is available to authorized users.
Databáze: OpenAIRE
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