Get access

Climate and history explain the species richness peak at mid-elevation for Schizothorax fishes (Cypriniformes: Cyprinidae) distributed in the Tibetan Plateau and its adjacent regions

Authors

  • Jun Li,

    1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China,
    Search for more papers by this author
  • Qixin He,

    1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China,
    Search for more papers by this author
  • Xia Hua,

    1. Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794-5245, USA,
    Search for more papers by this author
  • Jie Zhou,

    1. Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
    Search for more papers by this author
  • Huidan Xu,

    1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China,
    Search for more papers by this author
  • Jiakuan Chen,

    1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China,
    Search for more papers by this author
  • Cuizhang Fu

    Corresponding author
    1. Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, and Institute of Biodiversity Science, Fudan University, Shanghai 200433, China,
      *Correspondence: Cuizhang Fu, Institute of Biodiversity Science, Fudan University, Shanghai 200433, China. E-mail: czfu@fudan.edu.cn
    Search for more papers by this author

*Correspondence: Cuizhang Fu, Institute of Biodiversity Science, Fudan University, Shanghai 200433, China. E-mail: czfu@fudan.edu.cn

ABSTRACT

Aim  We studied elevational species richness patterns of Schizothorax fishes and identified the roles of ecological and evolutionary factors in shaping the patterns of elevational diversity.

Location  The Tibetan Plateau and its adjacent regions.

Methods  We assembled distribution and altitude data for all Schizothorax species using the literature. We merged ecological and evolutionary approaches to test the relationships between species richness and ecological factors (climate, area, the mid-domain effect) or evolutionary factors (diversification rates and time of colonization).

Results  We found that species richness of Schizothorax fishes peaked at mid-elevations. Rainfall, area, the mid-domain effect and diversification rate were weak predictors of the richness pattern. Temperature showed a nonlinear relationship with species richness. Temperature and time of colonization were the most important variables in explaining the elevational diversity pattern.

Main conclusion  Our findings indicate that the time-for-speciation effect and niche conservatism play important roles in variation of species richness.

Get access to the full text of this article

Ancillary