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Climatic drivers of plant-plant interactions and diversity in alpine communities

hal.structure.identifierThe University of Tokyo [UTokyo]
dc.contributor.authorKIKVIDZE, Zaal
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMICHALET, Richard
hal.structure.identifierMacaulay Land Use Research Institute
dc.contributor.authorBROOKER, Rob W.
hal.structure.identifierUniversidad de Concepción = University of Concepción [Chile] [UdeC]
dc.contributor.authorCAVIERES, Lohengrin A.
hal.structure.identifierYork University
dc.contributor.authorLORTIE, Christopher J.
hal.structure.identifierEstacion Experimental de Zonas Aridas
dc.contributor.authorPUGNAIRE, Francisco I.
hal.structure.identifierSchool of Biological Sciences [Univ California San Diego] [UC San Diego]
dc.contributor.authorCALLAWAY, Ragan M.
dc.date.issued2011
dc.identifier.issn1664-2201
dc.description.abstractEnAlpine plant communities are particularly amenable to experimentally test the stress-gradient hypothesis (SGH), which predicts that competitive interactions will be more frequent in relatively productive environments, whereas facilitation will be more common in severe systems. Experimental testing of the SGH along latitudinal and elevation gradients within and across continents indicated that particular climatic variables act as drivers of plant–plant interactions and community structure. However, the SGH in its current form remains a general framework that does not link explicitly climate variables such as temperature and precipitation to plant interactions or diversity. Here, we re-analyse our published data in order to explore whether climate can regulate biotic interactions and species diversity in alpine communities. We applied PCA to meteorological data, introduced latitude as a variable, and also used specially developed composite variables that combine temperature and precipitation during the growing season. The intensity of competitive interactions at low elevations decreased with increasing latitude, whereas the intensity of facilitative interactions at higher elevations did not vary with latitude. Micro-scale spatial patterns followed the same trend indicating that plant–plant interactions could generate these patterns. These findings specify the role of temperature in shifting the balance of plant interactions and can be readily incorporated in the SGH. We also found that species richness correlated positively with a composite climate variable, which is the product of maximum temperature and precipitation. Inclusion of this finding into the SGH will, however, need further studies focusing on the importance of water–energy relations for the dynamic balance of facilitation and competition.
dc.language.isoen
dc.publisherSpringer
dc.subjectFACILITATION
dc.subjectRICHESSE DES ESPÈCES
dc.subjectINTERACTION ENTRE PLANTE
dc.subjectCOMMUNAUTÉ ALPINE
dc.subject.enBIODIVERSITY DRIVERS
dc.subject.enCOMPETITION
dc.subject.enLATITUDINAL BIODIVERSITY GRADIENT
dc.subject.enSTRESS-GRADIENT HYPOTHESIS
dc.subject.enWATER–ENERGY BALANCE HYPOTHESIS
dc.title.enClimatic drivers of plant-plant interactions and diversity in alpine communities
dc.typeArticle de revue
dc.identifier.doi10.1007/s00035-010-0085-x
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalAlpine Botany
bordeaux.page63-70
bordeaux.volume121
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02651944
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02651944v1
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