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title: Elevational diversity gradients of Tibetan loaches: The relative roles of ecological and evolutionary processes
author: Feng, Chenguang;  Wu, Yongjie;  Tian, Fei;  Tong, Chao;  Tang, Yongtao;  Zhang, Renyi;  Li, Guogang;  Zhao, Kai
Issued Date: 2017
Abstract: It is widely believed that species richness patterns (SRPs) are shaped by both ecological and evolutionary processes. However, the relative roles of these processes remain unclear, especially for aquatic organisms. In this study, we integrated ecological and evolutionary measures to tease apart the relative influences of these factors on the SRP of Tibetan loaches along an extensive elevational gradient. We found that the Tibetan loaches displayed a richness pattern that peaked at midelevations. The mean annual temperature (MAT), mid-domain effect (MDE), and summed age of colonization (SAC, complex of colonization age and colonization frequency) were the main drivers, accounting for 85%, 51%, and 88% of the variations in the SRP, respectively. The three predictors had very high combined effects (MAT-MDE-SAC, MAT-SAC, and MDE-SAC were 44%, 38%, and 6%, respectively). Our analyses suggested that energy input, time-for-speciation, and species dispersal may directly guide the SRP or mediate it by geometric constraints. Conclusively, the SRP of the Tibetan loaches with elevation is the outcome of interactions between biogeographical processes and regional ecological conditions.
Source: ECOLOGY AND EVOLUTION
Related URLs: 10.1002/ece3.3504
Appears in Collections:其他_期刊论文

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Recommended Citation:
Feng, Chenguang,Wu, Yongjie,Tian, Fei,et al. Elevational Diversity Gradients Of Tibetan Loaches: The Relative Roles Of Ecological And Evolutionary Processes[J]. Ecology And Evolution,2017,7(23):9970-9977.

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