Published in
American Association for the Advancement of Science, Science, 6245(349), p. 302-305, 2015
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- ORCID
- ORCID
- American Association for the Advancement of Science
- [dx.doi.org] | PDF
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- [hdl.handle.net]
- [acervodigital.unesp.br]
- [www.researchgate.net] | PDF
- [real.mtak.hu] | PDF
- [repository.up.ac.za] | PDF
Tools
Worldwide evidence of a unimodal relationship between productivity and plant species richness
,
Diana Askarizadeh,
Sandor Bartha,
Carl Beierkuhnlein,
Jonathan A. Bennett,
Alex Bittel,
Bazartseren Boldgiv ,
Ilsi I. Boldrini,
Edward Bork,
Leslie Brown,
Marcelo Cabido
and other authors.
Full text: Download
Abstract
Other ; The search for predictions of species diversity across environmental gradients has challenged ecologists for decades. The humped-back model (HBM) suggests that plant diversity peaks at intermediate productivity; at low productivity few species can tolerate the environmental stresses, and at high productivity a few highly competitive species dominate. Over time the HBM has become increasingly controversial, and recent studies claim to have refuted it. Here, by using data from coordinated surveys conducted throughout grasslands worldwide and comprising a wide range of site productivities, we provide evidence in support of the HBM pattern at both global and regional extents. The relationships described here provide a foundation for further research into the local, landscape, and historical factors that maintain biodiversity.