Isolated alpine habitats reveal disparate ecological drivers of taxonomic and functional beta-diversity of small mammal assemblages

	Isolated alpine habitats reveal disparate ecological drivers of taxonomic and functional beta-diversity of small mammal assemblages
	Song, Wen-Yu; Li, Xue-You; Chen, Zhong-Zheng; Li, Quan; Onditi, Kenneth Otieno; He, Shui-Wang; Jiang, Xue-Long
	2020
发表期刊	ZOOLOGICAL RESEARCH
ISSN	2095-8137
卷号	41 期号:6 页码:670
摘要	The interpretation of patterns of biodiversity requires the disentanglement of geographical and environmental variables. Disjunct alpine communities are geographically isolated from one another but experience similar environmental impacts. Isolated homogenous habitats may promote speciation but constrain functional trait variation. In this study, we examined the hypothesis that dispersal limitation promotes taxonomic divergence, whereas habitat similarity in alpine mountains leads to functional convergence. We performed standardized field investigation to sample non-volant small mammals from 18 prominent alpine sites in the Three Parallel Rivers area. We estimated indices quantifying taxonomic and functional alpha- and beta-diversity, as well as beta-diversity components. We then assessed the respective importance of geographical and environmental predictors in explaining taxonomic and functional compositions. No evidence was found to show that species were more functionally similar than expected in local assemblages. However, the taxonomic turnover components were higher than functional ones (0.471 +/- 0.230 vs. 0.243 +/- 0.215), with nestedness components showing the opposite pattern (0.063 +/- 0.054 vs. 0.269 +/- 0.225). This indicated that differences in taxonomic compositions between sites occurred from replacement of functionally similar species. Geographical barriers were the key factor influencing both taxonomic total dissimilarity and turnover components, whereas functional betadiversity was primarily explained by climatic factors such as minimum temperature of the coldest month. Our findings provide empirical evidence that taxonomic and functional diversity patterns can be independently driven by different ecological processes. Our results point to the importance of clarifying different components of beta-diversity to understand the underlying mechanisms of community assembly. These results also shed light on the assembly rules and ecological processes of terrestrial mammal communities in extreme environments.
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/12895
专题	科研部门_兽类生态与进化（蒋学龙）
推荐引用方式 GB/T 7714	Song, Wen-Yu,Li, Xue-You,Chen, Zhong-Zheng,et al. Isolated alpine habitats reveal disparate ecological drivers of taxonomic and functional beta-diversity of small mammal assemblages[J]. ZOOLOGICAL RESEARCH,2020,41(6):670.
APA	Song, Wen-Yu.,Li, Xue-You.,Chen, Zhong-Zheng.,Li, Quan.,Onditi, Kenneth Otieno.,...&Jiang, Xue-Long.(2020).Isolated alpine habitats reveal disparate ecological drivers of taxonomic and functional beta-diversity of small mammal assemblages.ZOOLOGICAL RESEARCH,41(6),670.
MLA	Song, Wen-Yu,et al."Isolated alpine habitats reveal disparate ecological drivers of taxonomic and functional beta-diversity of small mammal assemblages".ZOOLOGICAL RESEARCH 41.6(2020):670.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
2021110104.pdf（14891KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	请求全文