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Facilitation displaces hot-spots of diversity and allows communities to persist in heavily stressed and disturbed environments

hal.structure.identifierLimnological Institute
hal.structure.identifierUniversité de Bordeaux [UB]
hal.structure.identifierDepartment of Botany
dc.contributor.authorLE BAGOUSSE-PINGUET, Yoann
hal.structure.identifierMOE Key Laboratory of Cell Activities and Stress Adaptations
dc.contributor.authorXIAO, Sa
hal.structure.identifierThe James Hutton Institute
dc.contributor.authorBROOKER, Rob W.
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
hal.structure.identifierCentre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
dc.contributor.authorGROSS, Nicolas
hal.structure.identifierDepartment of Biology
dc.contributor.authorLIANCOURT, Pierre
hal.structure.identifierLimnological Institute
dc.contributor.authorSTRAILE, Dietmar
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMICHALET, Richard
dc.date.issued2014
dc.identifier.issn1100-9233
dc.description.abstractEnQuestion What are the interacting effects of stress and disturbance on both competition and facilitation, and ultimately their impact on diversity and species ranges? Location Simulated data. Method We extended the spatially explicit model of Xiao et al. (Oikos, 118, 2009, 1343) to consider how stress and disturbance - operating alone or together - affect species distributions through varying biotic interactions. Results In the absence of facilitation, species ranges only occurred within the limits of a triangular zone, which can be considered equivalent to Grime's C-S-R triangle. Competitive species were distributed in low stress and disturbance conditions. Stress- and disturbance-tolerant species occurred in more stressed and disturbed environments. Species richness followed a hump-shaped relationship with a hotspot of diversity occurring close to the centre of the C-S-R triangle. In contrast, facilitation was able to dampen the negative impacts of stress and disturbance acting either solely or simultaneously, but this influence was not simply the sum of the effects of the processes operating independently on the two environmental gradients. Facilitation extended species distributions along both the stress and disturbance gradients and displaced the hotspot of diversity into the centre of the response surface. Conclusions Facilitation was able to promote the occurrence and persistence of communities in highly stressed and disturbed conditions, i.e. allowing a stable community to exist beyond the limits of the C-S-R triangle. We also showed that facilitation can be an important mechanism driving the displacement of hotspots of diversity from benign toward intermediate stressed and disturbed environments.
dc.language.isoen
dc.publisherWiley
dc.subject.enSimulation
dc.subject.enHotspots of diversity
dc.subject.enExpansion and extinction of communities
dc.subject.enFacilitation
dc.subject.enCommunity theory
dc.subject.enC-S-R triangle
dc.subject.enEnvironmental gradients
dc.subject.enSpecies distributions
dc.title.enFacilitation displaces hot-spots of diversity and allows communities to persist in heavily stressed and disturbed environments
dc.typeArticle de revue
dc.identifier.doi10.1111/jvs.12064
dc.subject.halSciences de l'environnement
bordeaux.journalJournal of Vegetation Science
bordeaux.page66-76
bordeaux.volume25
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-00796023
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00796023v1
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