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dc.contributor.authorSebastià, Ma. T.
dc.contributor.authorKirwan, Laura
dc.contributor.authorConnolly, John
dc.date.accessioned2016-12-12T11:12:00Z
dc.date.issued2008
dc.identifier.issn1100-9233
dc.identifier.urihttp://hdl.handle.net/10459.1/58795
dc.description.abstractQuestions: Is plant diversity in mesic grassland ecosystems vulnerable in the short-term to extreme climate change events? How rapidly can responses in vegetation composition occur in perennial grasslands? Are the expected compositional changes related to rare species losses or to shifts in the relative abundance of the dominants? Location: Subalpine mesic grasslands on limestone in the Pyrenees. Methods: Transplanting turves from the upland, with coldtemperate climate, to a lowland location, with continental Mediterranean climate. Results: Transplanting led to decreased biodiversity and strong shifts in vegetation composition. Results from both permutation tests and traditional multivariate analysis suggested different trajectories of vegetation depending on the initial species pool. Vegetation showed a tendency to converge in composition in the lowland over time, independently of initial differences. Estimated changes in relative biomass of the five most abundant species between the upland and the lowland ranged from –89 to +96 %. The ensemble of all other species was reduced by 80%. The most dominant species in the upland, Festuca nigrescens, reduced its abundance in the lowland, shifting from having mainly positive to mainly negative associations with other species. Conclusions: Mesic grassland ecosystems in the Pyrenees showed strong shifts in plant diversity and composition after a short period of warming and drought, as a consequence of acute vulnerability of some dominant grasses, losses of rare species, and aggregate and trigger effects of originally uncommon forb species.ca_ES
dc.description.sponsorshipThis work was partially supported by the Technological Forestry Centre of Catalonia, the Paeria de Lleida and a fellowship to MTS from the Catalan Government for a short-term visit to UCD.ca_ES
dc.language.isoengca_ES
dc.publisherWileyca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.3170/2008-8-18356ca_ES
dc.relation.ispartofJournal of Vegetation Science, 2008, vol. 19, núm. 3, p. 299-306ca_ES
dc.rights(c) IAVS; Opulus Press Uppsala, 2008ca_ES
dc.subjectBiodiversityca_ES
dc.subjectCompositional Data Analysisca_ES
dc.subjectDroughtca_ES
dc.subjectPermutation testca_ES
dc.titleStrong shifts in plant diversity and vegetation composition in grassland shortly after climatic changeca_ES
dc.typearticleca_ES
dc.identifier.idgrec014530
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.3170/2008-8-18356
dc.date.embargoEndDate2025-01-01


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