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Nitrogen deposition and climate change has increased vascular plant species richness and altered the composition of grazed subalpine grasslands

hal.structure.identifierEvolution et Diversité Biologique [EDB]
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorBOUTIN, Marion
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorCORCKET, Emmanuel
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorALARD, Didier
hal.structure.identifierInstituto Pirenaico de Ecologìa = Pyrenean Institute of Ecology [Zaragoza] [IPE - CSIC]
dc.contributor.authorVILLAR, Luis
hal.structure.identifierInstituto Pirenaico de Ecologìa = Pyrenean Institute of Ecology [Zaragoza] [IPE - CSIC]
dc.contributor.authorJIMÉNEZ, Juan-José
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierInstitute of Life Sciences
dc.contributor.authorBLAIX, Cian
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorLEMAIRE, Cedric
hal.structure.identifierConservatoire Botanique National Pyrénées Midi-Pyrénées
dc.contributor.authorCORRIOL, Gilles
hal.structure.identifierCentre d'études spatiales de la biosphère [CESBIO]
dc.contributor.authorLAMAZE, Thierry
hal.structure.identifierEvolution et Diversité Biologique [EDB]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
hal.structure.identifierEcole Nationale de Formation Agronomique de Toulouse [ENFA]
dc.contributor.authorPORNON, André
dc.date.issued2017
dc.identifier.issn0022-0477
dc.description.abstractEn1-Atmospheric nitrogen (N) deposition and climate warming are two major components of global change that drive species richness and composition in plant communities. However, their combined effects have been insufficiently investigated across large spatial and temporal scales particularly in high-elevation, nutrient-limited ecosystems.2-We examine whether and how N deposition and climate warming have altered the plant richness and the composition of subalpine semi-natural, extensively grazed grasslands of the Pyrenees, using two complementary approaches: i) analysis of 553 relevés to explore vegetation changes across large ecological gradients including temperature and N deposition (spatial approach) and ii) a resampling of a subset of 40 sites among the 553 sites to assess temporal changes over the past decades (temporal approach).3-Both approaches showed that the vascular plant species richness increased when temperature and cumulative N deposition increase, shifting of the species composition toward more thermophilic and eutrophic communities.4-Synthesis. We hypothesize that the release from abiotic constraints (milder temperature and higher N availability) due to global changes and long-standing extensive grazing counteracting the negative effects of N deposition have been responsible for the diversity and compositional changes of plant communities over the last decades in the Pyrenees. Thus, in contrast with other grasslands, high-elevation grazed grasslands may increase in species diversity with N deposition under climate warming.
dc.description.sponsorshipDispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux - ANR-11-LABX-0010
dc.language.isoen
dc.publisherWiley
dc.subjectprairie alpine
dc.subjectéchelle spatiale
dc.subjectécosystème
dc.subjectdépôt atmosphérique
dc.subjectazote atmosphérique
dc.subjectréchauffement climatique
dc.subjectcontrainte abiotique
dc.subjectcommunauté végétale
dc.subjectéchelle temporelle
dc.subjectpyrénées
dc.subject.enspatial scale
dc.subject.enalpine grasslands
dc.subject.enecosystem
dc.subject.enplant community
dc.title.enNitrogen deposition and climate change has increased vascular plant species richness and altered the composition of grazed subalpine grasslands
dc.typeArticle de revue
dc.identifier.doi10.1111/1365-2745.12743
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalJournal of Ecology
bordeaux.page1199-1209
bordeaux.volume105
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-01608704
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608704v1
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