Optimal stomatal behaviour around the world [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Science, 2015. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 459-464 : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Stomatal conductance (g<sub>s</sub>) is a key land-surface attribute as it links transpiration, the dominant component of global land evapotranspiration, and photosynthesis, the driving force of the global carbon cycle. Despite the pivotal role of g<sub>s</sub> in predictions of global water and carbon cycle changes, a global-scale database and an associated globally applicable model of g<sub>s</sub> that allow predictions of stomatal behaviour are lacking. Here, we present a database of globally distributed g<sub>s</sub> obtained in the field for a wide range of plant functional types (PFTs) and biomes. We find that stomatal behaviour differs among PFTs according to their marginal carbon cost of water use, as predicted by the theory underpinning the optimal stomatal model<sup>1</sup> and the leaf and wood economics spectrum<sup>2,3</sup>. We also demonstrate a global relationship with climate. In conclusion, these findings provide a robust theoretical framework for understanding and predicting the behaviour of g<sub>s</sub> across biomes and across PFTs that can be applied to regional, continental and global-scale modelling of ecosystem productivity, energy balance and ecohydrological processes in a future changing climate.
- Published through SciTech Connect., 03/02/2015., Nature Climate Change 5 5 ISSN 1758-678X AM, and Yan-Shih Lin; Belinda E. Medlyn; Remko A. Duursma; I. Colin Prentice; Han Wang; Sofia Baig; Derek Eamus; Victor Resco de Dios; Patrick Mitchell; David S. Ellsworth; Maarten Op de Beeck; Göran Wallin; Johan Uddling; Lasse Tarvainen; Maj-Lena Linderson; Lucas A. Cernusak; Jesse B. Nippert; Troy W. Ocheltree; David T. Tissue; Nicolas K. Martin-StPaul; Alistair Rogers; Jeff M. Warren; Paolo De Angelis; Kouki Hikosaka; Qingmin Han; et al.
- Funding Information:
- AC05-00OR22725, AC02-98CH10886, and SD/AF/02
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