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Shared-role of vegetation types,elevation and soil affecting plant diversity in an old-tropical mountain hotspot

Journal of Mountain Science 2023年第7期20卷 1842-1853页

作者： Priscilla P.LOIOLA Leonor Patrícia Cerdeira MORELLATO Maria Gabriela Gutierrez CAMARGO vitor a.kamimura Jacqueline S.MATTOS Annia Susin STREHER Soizig LE STRADIC Department of Biodiversity Laboratory of PhenologySão Paulo State University(UNESP)Av 24A 151513506-900Rio ClaroSão PauloBrazil Instituto Tecnológico Vale(ITV) R.Boaventura da Silva955BelémPará66055-090Brazil Laboratory of Evolutionary Ecology and Plant Genomics Department of Plant BiologyInstitute of BiologyUniversity of CampinasBrazil Earth Observation and Geoinformatics Division National Institute for Space Research(INPE)São Josédos CamposBrazil French National Institute for Agriculture Foodand Environment(INRAE)UMR 1202 INRAE/Univ Bordeaux-BIOGECOParisFrance

Despite the exceptional species richness and endemism,the environmental drivers of plant diversity along old tropical mountains remain *** respective importance of vegetation types,elevation,slope,and soil to drive diversity across life-forms is poorly ***,we tested whether environmental variables drove local and regional plant diversity along an old tropical mountain according to the three main life-forms:graminoids,herbaceous and woody *** sampled all Angiosperm species on 180 plots across five elevations,at the tropical old-mountain region of Serra do Cipó,South-eastern *** assessed soil,slope,and vegetation types,and calculated richness and beta-diversity,applying generalized least square models,linear mixed-models and partial Mantel tests to test for *** of graminoids and herbaceous species increased with greater elevation and more nutrient-impoverished soils,while woody richness showed the inverse ***-diversity was primarily driven by species turnover,correlated with elevation and soil and higher in less dominant vegetation types,with unique *** the limited elevational range in these old mountains,it still played an important role in filtering woody species,while fostering graminoid and herbaceous *** and restoration actions need to foster the high regional diversity supported by the old mountain heterogeneous landscape and the diversity of life-forms,especially the dominant and highly diverse grassy component.

关键词： Beta-diversity Campos rupestres Cerrado Grassland Herbaceous Species turnover

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