globalchange  > 过去全球变化的重建
DOI: 10.1186/s12898-019-0234-z
WOS记录号: WOS:000466879100001
论文题名:
Amphibian community structure along elevation gradients in eastern Nepal Himalaya
作者: Khatiwada, Janak R.1,2,3; Zhao, Tian1,2; Chen, Youhua1,2; Wang, Bin1,2; Xie, Feng1,2; Cannatella, David C.4; Jiang, Jianping1,2
通讯作者: Zhao, Tian
刊名: BMC ECOLOGY
ISSN: 1472-6785
出版年: 2019
卷: 19
语种: 英语
英文关键词: Amphibians ; Community structure ; Environmental correlation ; Elevational diversity gradient ; Ecology of the Himalayas
WOS关键词: SPECIES RICHNESS PATTERNS ; BODY-SIZE ; BERGMANNS RULE ; GEOMETRIC CONSTRAINTS ; ENVIRONMENTAL HETEROGENEITY ; ALTITUDINAL RANGE ; EXTINCTION RISK ; SMALL MAMMALS ; DIVERSITY ; WATER
WOS学科分类: Ecology
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

BackgroundSpecies richness and composition pattern of amphibians along elevation gradients in eastern Nepal Himalaya are rarely investigated. This is a first ever study in the Himalayan elevation gradient, the world's highest mountain range and are highly sensitive to the effects of recent global changes. The aim of the present study was to assess amphibian community structure along elevation gradients and identify the potential drivers that regulate community structures. Amphibian assemblages were sampled within 3months in both 2014 and 2015 (from May to July) using nocturnal time constrained and acoustic aids visual encounter surveys. In total, 79 transects between 78 and 4200m asl were sampled within 2years field work. A combination of polynomial regression, generalized linear models, hierarchical partitioning and canonical correspondence analysis were used to determine the effects of elevation and environmental variables on species richness, abundance, and composition of amphibian communities.ResultsSpecies richness and abundance declined linearly with increasing elevation, which did not support the Mid-Domain Model. Among all the environmental variables, elevation, surface area and humidity were the best predictors of species richness, abundance and composition of amphibians. The majority of amphibian species had narrow elevation ranges. There was no significant correlation between species range size and elevation gradients. However, body size significantly increased along elevation gradients, indicating that Bergmann's rule is valid for amphibians in eastern Nepal Himalaya.ConclusionsThis study indicates that eastern Nepal Himalaya is a hotspot in amphibian diversity, and it should be served as a baseline for management and conservation activities.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/138086
Appears in Collections:过去全球变化的重建

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作者单位: 1.Chinese Acad Sci, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Ecol Restorat & Biodivers Conservat Key Lab Sichu, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Univ Texas Austin, Dept Integrat Biol, Austin, TX 78712 USA

Recommended Citation:
Khatiwada, Janak R.,Zhao, Tian,Chen, Youhua,et al. Amphibian community structure along elevation gradients in eastern Nepal Himalaya[J]. BMC ECOLOGY,2019-01-01,19
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