Scale effects and human impact on the elevational species richness gradients

D. Nogués-Bravo (), M. B. Araújo, T. Romdal and C. Rahbek
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D. Nogués-Bravo: National Museum of Natural Sciences, CSIC, C/ José Gutiérrez Abascal, 2, 28006 Madrid, Spain
M. B. Araújo: National Museum of Natural Sciences, CSIC, C/ José Gutiérrez Abascal, 2, 28006 Madrid, Spain
T. Romdal: Center for Macroecology, Institute of Biology, University of Copenhagen, Universitetsparken 15
C. Rahbek: Center for Macroecology, Institute of Biology, University of Copenhagen, Universitetsparken 15

Nature, 2008, vol. 453, issue 7192, 216-219

Abstract: Using a data set consisting of 400,000 records covering 3,000 Pyrenean species, it is shown that sampling and scale effects alone can give rise to many conflicting species-richness patterns. Rather than a monotonic decreasing pattern of richness with altitude, a hump-shaped pattern corresponding to a mid-altitudinal richness peak is identified. Apart from sampling issues, it is argued that global reduction in natural lowland habitats also hampers our ability to detect universal patterns in biodiversity.

Date: 2008
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DOI: 10.1038/nature06812

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