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Plant functional and phylogenetic turnover correlate with climate and land use in the Western Swiss Alps

Journal of Plant Ecology 2014年第5期7卷 439-450页

作者： charlotte ndiribe Loïc Pellissier Anne Dubuis Pascal Vittoz Nicolas Salamin Antoine Guisan Department of Ecology and Evolution University of LausanneBiophore BuildingUnil-SorgeVaudLausanne CH-1015Switzerland Swiss Institute of Bioinformatics GenopodeLausanne CH-1015Switzerland The Arctic Research Centre Department of BioscienceAarhus UniversityAarhusDenmark Institute of Earth Surface Dynamics GeopolisUniversity of LausanneLausanne CH-1015Switzerland

Aims Understanding the relative importance of historical and environ-mental processes in the structure and composition of communities is one of the longest quests in ecological ***,researchers are relying on the functional and phylogeneticβ-diversity of natural communities to provide concise explanations on the mechanistic basis of community assembly and the drivers of trait variation among *** present study investigated how plant functional and phylogeneticβ-diversity change along key environmental and spatial gradients in the Western Swiss *** Using the quadratic diversity measure based on six functional traits-specific leaf area,leaf dry matter content,plant height,leaf carbon content,leaf nitrogen content and leaf carbon to nitrogen content alongside a species-resolved phylogenetic tree-we relate variations in climate,spatial geographic,land use and soil gradients to plant functional and phylogenetic turnover in mountain commu-nities of the Western Swiss *** Findings Our study highlights two main ***,climate and land-use factors play an important role in mountain plant community ***,the overlap between plant functional and phy-logenetic turnover along these gradients correlates with the low phylogenetic signal in traits,suggesting that in mountain land-scapes,trait lability is likely an important factor in driving plant community ***,we demonstrate the importance of climate and land-use factors in plant functional and phyloge-netic community turnover and provide valuable complementary insights into understanding patterns ofβ-diversity along several ecological gradients.

关键词： ecological gradients functional and phylogeneticβ-diversity plant community turnover Rao’s quadratic entropy index(Q) Western Swiss Alps

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