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Are clonal traits and their response to defoliation good predictors of grazing resistance?

hal.structure.identifierStructure et Dynamique de la Diversité
dc.contributor.authorBENOT, Marie-Lise
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
dc.contributor.authorMONY, Cendrine
hal.structure.identifierFaculty of Biological Sciences
dc.contributor.authorLEPS, J.
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
hal.structure.identifierAgrosystèmes tropicaux [ASTRO]
dc.contributor.authorPENET, Laurent
hal.structure.identifierEcosystèmes, biodiversité, évolution [Rennes] [ECOBIO]
dc.contributor.authorBONIS, Anne
dc.date.issued2013
dc.identifier.issn1916-2790
dc.description.abstractEnGrazing resistance in plants, which can be defined as the ability to grow and reproduce under grazed conditions, is either associated to defoliation avoidance or tolerance. Clonal traits are often neglected when studying functional responses to grazing, despite frequent occurrence in grassland vegetation. We investigated whether clonal traits and response to defoliation were associated to increased grazing resistance. First, grazing resistance was estimated for eight clonal species using abundance patterns in a long-term field study. We then analysed its correlation with traits in undisturbed conditions and responses to defoliation in a garden experiment. A few traits were correlated to grazing resistance, though only one was a clonal trait (belowground clonal biomass). Grazing resistance was negatively correlated to shoot height and belowground clonal biomass and positively correlated to inflorescence biomass, suggesting that tall rhizomatous species investing little in sexual reproduction were at a disadvantage under grazed conditions. Both shoot height and belowground clonal biomass were negatively affected by defoliation but their decrease was significantly less for species that expressed the greatest grazing resistance in the field. Our findings show that incorporating clonal traits slightly improved predictions about field grazing resistance in the eight investigated species.
dc.language.isoen
dc.publisherNRC Research Press
dc.title.enAre clonal traits and their response to defoliation good predictors of grazing resistance?
dc.typeArticle de revue
dc.identifier.doi10.1139/cjb-2012-0100
dc.subject.halSciences de l'environnement/Biodiversité et Ecologie
bordeaux.journalBotany / Botanique
bordeaux.page62-68
bordeaux.volume91
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-00818392
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.itdefoliation avoidance
dc.subject.itdefoliation tolerance
dc.subject.itgraminoids
dc.subject.itgrasses
dc.subject.itspecies abundance patterns
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00818392v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Botany%20/%20Botanique&rft.date=2013&rft.volume=91&rft.issue=2&rft.spage=62-68&rft.epage=62-68&rft.eissn=1916-2790&rft.issn=1916-2790&rft.au=BENOT,%20Marie-Lise&MONY,%20Cendrine&LEPS,%20J.&PENET,%20Laurent&BONIS,%20Anne&rft.genre=article


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