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Tree diversity limits the impact of an invasive forest pest

hal.structure.identifierDynamiques Forestières dans l'Espace Rural [DYNAFOR]
dc.contributor.authorGUYOT, Virginie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCASTAGNEYROL, Bastien
hal.structure.identifierDynamiques Forestières dans l'Espace Rural [DYNAFOR]
dc.contributor.authorVIALATTE, Aude
hal.structure.identifierDynamiques Forestières dans l'Espace Rural [DYNAFOR]
dc.contributor.authorDECONCHAT, Marc
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorSELVI, Federico
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorBUSSOTTI, Filippo
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorJACTEL, Hervé
dc.date.issued2015-09-11
dc.identifier.issn1932-6203
dc.description.abstractEnThe impact of invasive herbivore species may be lower in more diverse plant communities due to mechanisms of associational resistance. According to the “resource concentration hypothesis” the amount and accessibility of host plants is reduced in diverse plant communities, thus limiting the exploitation of resources by consumers. In addition, the “natural enemy hypothesis” suggests that richer plant assemblages provide natural enemies with more complementary resources and habitats, thus promoting top down regulation of herbivores. We tested these two hypotheses by comparing crown damage by the invasive Asian chestnut gall wasp (Dryocosmus kuriphilus) on chestnut trees (Castanea sativa) in pure and mixed stands in Italy. We estimated the defoliation on 70 chestnut trees in 15 mature stands sampled in the same region along a gradient of tree species richness ranging from one species (chestnut monocultures) to four species (mixtures of chestnut and three broadleaved species). Chestnut defoliation was significantly lower in stands with higher tree diversity. Damage on individual chestnut trees decreased with increasing height of neighboring, heterospecific trees. These results suggest that conservation biological control method based on tree species mixtures might help to reduce the impact of the Asian chestnut gall.
dc.language.isoen
dc.publisherPublic Library of Science
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enSweet chestnut (tree)
dc.subject.enComparative analysis
dc.subject.enLeaf removal
dc.title.enTree diversity limits the impact of an invasive forest pest
dc.typeArticle de revue
dc.identifier.doi10.1371/journal.pone.0136469
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Horticulture
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles/Sylviculture, foresterie
bordeaux.journalPLoS ONE
bordeaux.pagepp. 1-16
bordeaux.volumevol. 10
bordeaux.issuen° 9
bordeaux.peerReviewedoui
hal.identifierhal-01391246
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01391246v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=PLoS%20ONE&rft.date=2015-09-11&rft.volume=vol.%2010&rft.issue=n%C2%B0%209&rft.spage=pp.%201-16&rft.epage=pp.%201-16&rft.eissn=1932-6203&rft.issn=1932-6203&rft.au=GUYOT,%20Virginie&CASTAGNEYROL,%20Bastien&VIALATTE,%20Aude&DECONCHAT,%20Marc&SELVI,%20Federico&rft.genre=article


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