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

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 

机构地区：[1]Department of Biodiversity,Laboratory of Phenology,São Paulo State University(UNESP),Av 24A 1515,13506-900,Rio Claro,São Paulo,Brazil [2]Instituto Tecnológico Vale(ITV),R.Boaventura da Silva,955,Belém,Pará,66055-090,Brazil [3]Laboratory of Evolutionary Ecology and Plant Genomics,Department of Plant Biology,Institute of Biology,University of Campinas,Brazil [4]Earth Observation and Geoinformatics Division,National Institute for Space Research(INPE),São Josédos Campos,Brazil [5]French National Institute for Agriculture,Food,and Environment(INRAE),UMR 1202 INRAE/Univ Bordeaux-BIOGECO,Paris,France

出　　处：《Journal of Mountain Science》2023年第7期1842-1853,共12页山地科学学报（英文）

基　　金：Sao Paulo Research Foundation(FAPESP)for financial support through the grants:#2009/54208-6;Fapesp-Microsoft Research Institute#2013/50155-0;Fapesp-Vale#2010/51307-0,#2021/10639-5 to LPCM;through fellowships FAPESP#2015/10754-8 to MGGC and#2019/09248-1 to ASS;Coordena??o de Aperfei?oamento de Pessoal de Nível Superior–(CAPES)for scholarships granted to MGGC(Process#88887.583309/2020-00);PPL(#88887.583146/2020-00);JSS(CAPES Finance Code 001);National Council for Scientific and Technological Development(CNPq)for the grants:CNPq-PVE#400717/2013-1 and PDJ#150404/2016-6 to SLS;for the productivity fellowship and grant#311820/2018-2,#306563/2022-3 to LPCM。

摘　　要：Despite the exceptional species richness and endemism,the environmental drivers of plant diversity along old tropical mountains remain underexplored.The respective importance of vegetation types,elevation,slope,and soil to drive diversity across life-forms is poorly addressed.Here,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 species.We sampled all Angiosperm species on 180 plots across five elevations,at the tropical old-mountain region of Serra do Cipó,South-eastern Brazil.We 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 relationships.Richness of graminoids and herbaceous species increased with greater elevation and more nutrient-impoverished soils,while woody richness showed the inverse pattern.Beta-diversity was primarily driven by species turnover,correlated with elevation and soil and higher in less dominant vegetation types,with unique species.Despite the limited elevational range in these old mountains,it still played an important role in filtering woody species,while fostering graminoid and herbaceous species.Conservation 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 

分 类 号：Q948[生物学—植物学]