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Direct and indirect facilitation affect community productivity through changes in functional diversity in an alpine system

dc.rights.licenseopenen_US
atmire.cua.enabled
dc.contributor.authorWANG, Xiangtai
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorMICHALET, Richard
dc.contributor.authorMENG, Lihua
dc.contributor.authorZHOU, Xianhui
dc.contributor.authorCHEN, Shuyan
dc.contributor.authorDU, Guozhen
dc.contributor.authorXIAO, Sa
dc.date.accessioned2024-02-26T09:54:55Z
dc.date.available2024-02-26T09:54:55Z
dc.date.issued2020-09-17
dc.identifier.issn0305-7364en_US
dc.identifier.urioai:crossref.org:10.1093/aob/mcaa170
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/188431
dc.description.abstractEnAbstract Background and Aims Facilitation is an important ecological process for plant community structure and functional composition. Although direct facilitation has accrued most of the evidence so far, indirect facilitation is ubiquitous in nature and it has an enormous potential to explain community structuring. In this study, we assess the effect of direct and indirect facilitation on community productivity via taxonomic and functional diversity. Methods In an alpine community on the Tibetan Plateau, we manipulated the presence of the shrub Dasiphora fruticosa and graminoids in a fenced meadow and a grazed meadow to quantify the effects of direct and indirect facilitation. We measured four plant traits: height, lateral spread, specific leaf area (SLA) and leaf dry matter content (LDMC) of forbs; calculated two metrics of functional diversity [range of trait and community-weighted mean (CWM) of trait]; and assessed the responses of functional diversity to shrub facilitation. We used structural equation modelling to explore how shrubs directly and indirectly drove community productivity via taxonomic diversity and functional diversity. Key Results We found stronger effects from herbivore-mediated indirect facilitation than direct facilitation on productivity and taxonomic diversity, regardless of the presence of graminoids. For functional diversity, the range and CWM of height and SLA, rather than lateral spread and LDMC, generally increased due to direct and indirect facilitation. Moreover, we found that the range of traits played a primary role over taxonomic diversity and CWM of traits in terms of shrub effects on community productivity. Conclusions Our study reveals that the mechanism of shrub direct and indirect facilitation of community productivity in this alpine community is expanding the realized niche (i.e. expanding range of traits). Our findings indicate that facilitators might increase trait dispersion in the local community, which could alleviate the effect of environmental filters on trait values in harsh environments, thereby contributing to ecosystem functioning.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enCommunity productivity
dc.subject.enCommunity-weighted mean
dc.subject.enDasiphora fruticosa
dc.subject.enDirect facilitation
dc.subject.enFunctional diversity
dc.subject.enIndirect facilitation
dc.subject.enTrait range
dc.title.enDirect and indirect facilitation affect community productivity through changes in functional diversity in an alpine system
dc.typeArticle de revueen_US
dc.identifier.doi10.1093/aob/mcaa170en_US
dc.subject.halSciences de l'environnementen_US
bordeaux.journalAnnals of Botanyen_US
bordeaux.page241-249en_US
bordeaux.volume127en_US
bordeaux.hal.laboratoriesEPOC : Environnements et Paléoenvironnements Océaniques et Continentaux - UMR 5805en_US
bordeaux.issue2en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.teamECOBIOC
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-04477250
hal.version1
hal.date.transferred2024-02-26T09:55:24Z
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Annals%20of%20Botany&rft.date=2020-09-17&rft.volume=127&rft.issue=2&rft.spage=241-249&rft.epage=241-249&rft.eissn=0305-7364&rft.issn=0305-7364&rft.au=WANG,%20Xiangtai&MICHALET,%20Richard&MENG,%20Lihua&ZHOU,%20Xianhui&CHEN,%20Shuyan&rft.genre=article


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