Species-specific stomatal response of trees to drought – a link to vegetation dynamics?
✍ Scribed by R. Zweifel; A. Rigling; M. Dobbertin
- Book ID
- 111277391
- Publisher
- Opulus Press
- Year
- 2009
- Tongue
- English
- Weight
- 776 KB
- Volume
- 20
- Category
- Article
- ISSN
- 1100-9233
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## Background: Stomata respond to vapour pressure deficit (d) - when d increases, stomata begin to close. closure is the result of a decline in guard cell turgor, but the link between d and turgor is poorly understood. we describe a model for stomatal responses to increasing d based upon cellular w
The gas exchange of 19 widely different warm climate species was observed at different leaf to air vapour pressure deficits (VPD). In all species stomata tended to close as VPD increased resulting in a decrease in net photosynthesis. The absolute reduction in leaf conductance per unit increase in VP