Functional and phylogenetic structure of mammals along elevational gradients in the Central and East Himalayas  

作　　者：Yiming Hu Zhifeng Ding Huijian Hu Luke Gibson Dan Liang Zhixin Zhou Jianchao Liang Brett R.Schefers 

机构地区：[1]Guangdong Key Laboratory of Animal Conservation and Resource Utilization,Institute of Zoology,Guangdong Academy of Sciences,Guangzhou,China [2]Department of Wildlife Ecology and Conservation,University of Florida,Gainesville,USA [3]School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,China [4]Princeton Schoolof Public and International Afairs,Princeton University,Princeton,NJ,USA

出　　处：《Ecological Processes》2024年第4期51-66,共16页生态过程(英文)

基　　金：National Natural Science Foundation of China(no.31901109);GDAS Special Project of Science and Technology Development(2022GDASZH-2022010105);the China Postdoctoral Foundation(2021M700891);the National Natural Science Foundation of China(no.32271736);Survey of Wildlife Resources in Key Areas of Tibet(ZL202203601).

摘　　要：Background Mountain ecosystems are critical hotspots of global biodiversity,yet the dynamics of community assembly along their elevational gradients are not well understood.This gap is primarily due to the complexity of environmental and biotic interactions that influence species distribution and community structure.Although extensive research has been conducted on certain taxa,such as small mammals and bats,comprehensive stud-ies encompassing entire mammal assemblages are lacking.Our research aims to bridge this gap by examining the taxonomic,phylogenetic,and functional diversity,as well as the assemblage structures of mammal communities across elevational gradients in the Central and East Himalayas,exploring how diverse ecological and evolutionary processes impact community assembly.Methods We analyzed mammal elevational diversity patterns using species richness,functional diversity(FD),and phylogenetic diversity(PD).We compared the observed values of community structure,such as mean pairwise phylogenetic distance(MPD)and mean pairwise functional distance(MFD),with null-model corrected effect sizes to identify patterns and processes of community assembly.Using structural equation modeling and hierarchical par-titioning,we investigated the relationships between climate,productivity,and various facets of diversity,describing the organization of each component across different elevations.Results Taxonomic,functional,and phylogenetic diversity generally decreased with elevation but showed var-ied patterns such as mid-elevation peaks,low-elevation plateaus,or monotonic declines across different regions.Richness-controlled functional diversity increased towards mid-low elevations and decreased at higher elevations in both regions,whereas richness-controlled phylogenetic diversity lacked consistent patterns.Phylogenetic struc-tures tended to cluster from mid to high elevations,indicating closer relationships than those observed in random communities,likely due to significant environmental turnover near tree lines.Func

关 键 词：Assemblage structure Functional diversity Himalaya mountains MAMMALS Phylogenetic diversity Species richness 

分 类 号：Q958.1[生物学—动物学]