Elevation patterns and critical environmental drivers of the taxonomic, functional, and phylogenetic diversity of small mammals in a karst mountain area. Issue 19 (9th September 2020)

• Record Type: Journal Article
• Authors: Sun, Jian; Wen, Zhixin; Feijó, Anderson; Cheng, Jilong; Wang, Yanqun; Li, Song; Ge, Deyan; Xia, Lin; Yang, Qisen
• Is Part Of: Ecology and evolution. Volume 10:Issue 19(2020)
• Page Start: 10899
• Page End: 10911
• Publication Date: 2020-09-09
• Subjects: biodiversity -- climate factors -- elevation gradient -- human influence; Ecology -- Periodicals; Evolution -- Periodicals; 577.05
• DOI: 10.1002/ece3.6750
• Languages: English
• ISSNs: 2045-7758

Abstract

Abstract: Understanding how biodiversity components are related under different environmental factors is a fundamental challenge for ecology studies, yet there is little knowledge of this interplay among the biotas, especially small mammals, in karst mountain areas. Here, we examine the elevation patterns of the taxonomic diversity (TD), phylogenetic diversity (PD), and functional diversity (FD) of small mammals in a karst mountain area, the Wuling Mountains, Southwest China, and compare these patterns between taxa (Rodentia and Eulipotyphla) and scales (broad‐ and narrow‐range species). We also disentangle the impacts of the human influence index, net primary productivity (NPP), normalized difference vegetation index (NDVI), annual precipitation (AP), and annual mean temperature (AMT) on these three facets of biodiversity by using structural equation modeling. We recorded a total of 39 small mammal species, including 26 rodents and 13 species of the order Eulipotyphla. Our study shows that the facets of biodiversity are spatially incongruent. Net primary productivity has a positive effect on the three facets for most groups, while the effect of the NDVI is negative for TD and PD in most groups. AMT temperature and AP have negative effects on FD and PD, whereas TD is dependent on the species range scale. The human influence index effect on TD and PD also depends on the species range scale. These findings provide robust evidence that the ecological drivers of biodiversity differ among different biotas and different range scales, and future research should use multifacet approach to determine biodiversity conservation strategies. Abstract : We investigate elevational patterns of three diversity metrics for small mammals and relate them to climate, productivity, vegetation, and human impact. We find ecological distinct groups of small mammals were unevenly affected by environmental and anthropogenic factors.