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Cascade effects of crop species richness on the diversity of pest insects and their natural enemies

dc.contributor.authorShi, PeiJianen_ZA
dc.contributor.authorHui, Cangen_ZA
dc.contributor.authorMen, Xing Yuanen_ZA
dc.contributor.authorZhao, Zu Huaen_ZA
dc.contributor.authorOuyang, Fangen_ZA
dc.contributor.authorGe, Fengen_ZA
dc.contributor.authorJin, XianShien_ZA
dc.contributor.authorCao, HaiFengen_ZA
dc.contributor.authorLi, B. Larryen_ZA
dc.date.accessioned2016-07-12T10:27:23Z
dc.date.available2016-07-12T10:27:23Z
dc.date.issued2014
dc.identifier.citationShi, P. et al. 2014. Cascade effects of crop species richness on the diversity of pest insects and their natural enemies. Science China Life Sciences, 57(7): 718-725, doi:10.1007/s11427-014-4681-7.en_ZA
dc.identifier.issn1869-1889 (online)
dc.identifier.issn1674-7305 (print)
dc.identifier.otherdoi:10.1007/s11427-014-4681-7
dc.identifier.urihttp://hdl.handle.net/10019.1/99164
dc.descriptionCITATION: Shi, P. et al. 2014. Cascade effects of crop species richness on the diversity of pest insects and their natural enemies. Science China Life Sciences, 57(7): 718-725, doi:10.1007/s11427-014-4681-7.en_ZA
dc.descriptionThe original publication is available at http://link.springer.com/journal/11427en_ZA
dc.description.abstractUnderstanding how plant species richness influences the diversity of herbivorous and predatory/parasitic arthropods is central to community ecology. We explore the effects of crop species richness on the diversity of pest insects and their natural enemies. Using data from a four-year experiment with five levels of crop species richness, we found that crop species richness significantly affected the pest species richness, but there were no significant effects on richness of the pests’ natural enemies. In contrast, the species richness of pest insects significantly affected their natural enemies. These findings suggest a cascade effect where trophic interactions are strong between adjacent trophic levels, while the interactions between connected but nonadjacent trophic levels are weakened by the intermediate trophic level. High crop species richness resulted in a more stable arthropod community compared with communities in monoculture crops. Our results highlight the complicated cross-trophic interactions and the crucial role of crop diversity in the food webs of agro-ecosystemsen_ZA
dc.description.urihttp://link.springer.com/article/10.1007/s11427-014-4681-7
dc.format.extent8 pages : illustrationsen_ZA
dc.language.isoen_ZAen_ZA
dc.publisherSpringeren_ZA
dc.subjectCrop species richness -- Cascade effectsen_ZA
dc.subjectSpecies richness of pest insectsen_ZA
dc.subjectNatural enemies of pests insectsen_ZA
dc.subjectPest insects -- Diversityen_ZA
dc.titleCascade effects of crop species richness on the diversity of pest insects and their natural enemiesen_ZA
dc.typeArticleen_ZA
dc.description.versionPublisher's versionen_ZA
dc.rights.holderAuthors retain copyrighten_ZA


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