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Title: Optimal stomatal behaviour around the world

Stomatal conductance (gs) 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 gs in predictions of global water and carbon cycle changes, a global-scale database and an associated globally applicable model of gs that allow predictions of stomatal behaviour are lacking. Here, we present a database of globally distributed gs 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 model1 and the leaf and wood economics spectrum2,3. We also demonstrate a global relationship with climate. In conclusion, these findings provide a robust theoretical framework for understanding and predicting the behaviour of gs 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.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [4] ;  [5] ;  [6] ;  [2] ;  [7] ;  [8] ;  [8] ;  [9] ;  [10] ;  [11] ;  [12] ;  [13] ;  [2] ;  [14] more »;  [15] ;  [16] ;  [17] ;  [18] ;  [19] ;  [20] ;  [2] ;  [2] ;  [21] ;  [22] ;  [23] ;  [24] ;  [25] ;  [26] ;  [27] ;  [28] ;  [24] ;  [27] ;  [29] ;  [2] ;  [30] ;  [2] ;  [28] ;  [1] ;  [31] ;  [32] ;  [33] ;  [34] ;  [27] ;  [35] ;  [36] ;  [37] ;  [38] ;  [39] « less
  1. Macquari Univ., North Ryde, NSW (Australia)
  2. Univ. of Western Sydney, Penrith, NSW (Australia)
  3. Macquari Univ., North Ryde, NSW (Australia); Imperial College, Buckhurst Road, Ascot (United Kingdom)
  4. Univ. of Technology, Sydney, NSW (Australia)
  5. Univ. de Lleida, Lleida (Spain)
  6. Commonwealth Scientific and Industrial Research Organization (CSIRO), Sandy Bay, Tasmania (Australia). Ecosystem Sciences
  7. Univ. of Antwerp, Antwerp (Belgium)
  8. Univ. of Gothenburg (Sweden)
  9. Swedish Univ. of Agricultural Sciences (SLU), Umea (Sweden)
  10. Lund Univ. (Sweden)
  11. James Cook Univ., Cairns, QLD (Australia)
  12. Kansas State Univ., Manhattan, KS (United States)
  13. Colorado State Univ., Fort Collins, CO (United States)
  14. Univ. Paris-Sud, Orsay (France)
  15. Brookhaven National Lab. (BNL), Upton, NY (United States)
  16. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  17. Univ. of Tuscia, Viterbo (Italy)
  18. Tohoku Univ., Sendai (Japan)
  19. Forestry and Forest Products Research Institute (FFPRI),Toyohira, Sapporo, Hokkaido (Japan)
  20. Kyoto Univ. (Japan)
  21. Univ. of Exeter, Penryn (United Kingdom)
  22. Inst. National Agricultural Research (INRA), Champenoux (France)
  23. Inst. National Agricultural Research (INRA), Villenave d' Ornon (France); Bordeaux Sciences Agro, Gradignan (France)
  24. Univ. of Melbourne (Australia)
  25. Univ. of Auckland, AK (New Zealand)
  26. Consejo Superior de Investigaciones Cientificas (CSIC), Madrid (Spain). National Museum of Natural Sciences (MNCN)
  27. Univ. of Edinburgh, Scotland (United Kingdom)
  28. Charles Darwin Univ., NT (Australia)
  29. Forestry Commission England, Bristol (United Kingdom)
  30. Swedish Univ. of Agricultural Sciences, Uppsala (Sweden)
  31. Ishikawa Prefectural Univ., Ishikawa (Japan)
  32. Univ. of Helsinki (Finland)
  33. Ishikawa Prefectural Univ., Ishikawa (Japan); Obihiro Univ. of Agriculture and Veterinary Medicine, Obihiro, (Japan)
  34. Univ. of New Mexico, Albuquerque, NM (United States)
  35. Federal Univ. of Para, Belem (Brazil)
  36. Technical Univ. of Denmark, Roskilde (Denmark)
  37. Pontifical Catholic University of Peru (PUCP), Lima (Peru). Seccion Quimica; Univ. of Oxford (United Kingdom)
  38. Northeast Normal Univ., Changchun (China). Inst. of Grassland Science
  39. Inst. National Agricultural Research (INRA), Villenave d' Ornon (France)
Publication Date:
OSTI Identifier:
1261436
Grant/Contract Number:
AC05-00OR22725; AC02-98CH10886; SD/AF/02
Type:
Accepted Manuscript
Journal Name:
Nature Climate Change
Additional Journal Information:
Journal Volume: 5; Journal Issue: 5; Journal ID: ISSN 1758-678X
Publisher:
Nature Publishing Group
Research Org:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES