期刊
SCIENCE
卷 349, 期 6245, 页码 302-305出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aab3916
关键词
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资金
- Canada Research Chair Program
- Canadian Foundation for Innovation (CFI)
- Natural Sciences and Engineering Research Council Discovery Grant (NSERC-DG) of Canada
- Thompson Rivers University
- CFI
- NSERC-DG
- University of Tartu, Estonia
- European Regional Development Fund: Centre of Excellence FIBIR
- Hungarian National Science Foundation [OTKA K 105608]
- Taylor Family-Asia Foundation Endowed Chair in Ecology and Conservation Biology
- University of Mongolia's Support for High Impact Research program
- Rangeland Research Institute, University of Alberta, Canada
- CONICET
- Universidad Nacional de Cordoba
- FONCyT
- Inter-American Institute for Global Change Research
- NSF
- State Nature Reserve Montagna di Torricchio
- University of Camerino, Italy
- Hungarian University of Transylvania, Romania
- Fundacao Grupo Boticario, Brazil [0153_2011_PR]
- NSF [DEB-1021158, DEB-0950100, DEB 1149980, DEB 1355122]
- UHURU: NSERC
- University of Wyoming
- National Natural Science Foundation of China [41171417]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil [307719/2012-0]
- CNPq, Brazil [403750/2012-1, 307689/2014-0]
- University of Florida
- Princeton Environmental Institute
- CONYCIT Becas-Chile Scholarship
- Direct For Biological Sciences
- Division Of Environmental Biology [0950100, 1355122, 1021158] Funding Source: National Science Foundation
- Directorate For Geosciences [1138881] Funding Source: National Science Foundation
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.
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