Tree Diversity Limits the Impact of an Invasive Forest Pest
| Autor: | Filippo Bussotti, Federico Selvi, Aude Vialatte, Hervé Jactel, Marc Deconchat, Bastien Castagneyrol, Virginie Guyot |
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| Přispěvatelé: | Institut National Polytechnique de Toulouse - INPT (FRANCE), Institut National de la Recherche Agronomique - INRA (FRANCE), Université de Bordeaux (FRANCE), Università degli Studi di Firenze (ITALY), Dynamiques Forestières dans l'Espace Rural (DYNAFOR), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure Agronomique de Toulouse-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Biodiversité, Gènes & Communautés (BioGeCo), Université de Bordeaux (UB)-Institut National de la Recherche Agronomique (INRA), Università degli Studi di Firenze [Firenze], Institut National de la Recherche Agronomique (INRA)-École nationale supérieure agronomique de Toulouse [ENSAT]-Institut National Polytechnique (Toulouse) (Toulouse INP), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), Università degli Studi di Firenze = University of Florence [Firenze] (UNIFI), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Insecta défoliation Biodiversity Leaf removal lcsh:Medicine Introduced species lutte biologique Forests 01 natural sciences Invasive species Trees communauté végétale forestière [SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture forestry arbre forestier feuillu [SDV.SA.HORT]Life Sciences [q-bio]/Agricultural sciences/Horticulture lcsh:Science Multidisciplinary mélange de variétés Ecology Comparative analysis Gall wasp Trees Chestnuts Species Diversity Shannon Index Invasive Species Forests Plant-Herbivore interactions Herbivory analyse comparative Italy Research Article herbivore Biology Horticulture 010603 evolutionary biology Sylviculture foresterie castanea sativa Animals Herbivory guêpe Sweet chestnut (tree) Herbivore lcsh:R Dryocosmus kuriphilus Species diversity 15. Life on land biology.organism_classification italie essence forestière lcsh:Q Species richness Introduced Species 010606 plant biology & botany |
| Zdroj: | PLoS ONE, Vol 10, Iss 9, p e0136469 (2015) PLoS ONE PLoS ONE, Public Library of Science, 2015, vol. 10 (n° 9), pp. 1-16. ⟨10.1371/journal.pone.0136469⟩ Plos One 9 (10), 16 p.. (2015) |
| ISSN: | 1932-6203 |
| Popis: | International audience; The 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. |
| Databáze: | OpenAIRE |
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