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Global amphibian population declines

Author

Listed:
  • Jeff. E. Houlahan

    (University of Ottawa)

  • C. Scott Findlay

    (Center for Research on Environment–Economy Interactions, University of Ottowa)

  • Andrea H. Meyer

    (Swiss Federal Statistical Office, Sektion Hochschulen und Wissenschaft)

  • Sergius L. Kuzmin

    (Institute of Ecology and Evolution, Russian Academy of Sciences)

  • Benedikt R. Schmidt

    (Zoologisches Institut, University of Zürich)

Abstract

Alford et al. address several questions related to the biological and statistical analysis of declines in global amphibian populations. They argue that, by emphasizing the global mean, we have masked spatial and temporal variation in amphibian population trends. Admittedly, information is lost when any summary statistic is used, but global amphibian declines should not be inferred by estimating missing values. Furthermore, they contend that we do not distinguish between a global decline with global causes and the cumulative effects of local declines with local causes. But we did not address the issue of causation: we reported widespread declines in extant, mostly lowland populations, whereas the recent focus has been on extinctions at high-altitude sites1,2.

Suggested Citation

  • Jeff. E. Houlahan & C. Scott Findlay & Andrea H. Meyer & Sergius L. Kuzmin & Benedikt R. Schmidt, 2001. "Global amphibian population declines," Nature, Nature, vol. 412(6846), pages 500-500, August.
    • Handle: RePEc:nat:nature:v:412:y:2001:i:6846:d:10.1038_35087661
    DOI: 10.1038/35087661
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