Environmental constraints on transpiration and stomatal conductance in a Siberian Arctic boreal forest
نویسندگان
چکیده
منابع مشابه
Interspecific variation in nighttime transpiration and stomatal conductance in a mixed New England deciduous forest.
Transpiration is generally assumed to be insignificant at night when stomata close in response to the lack of photosynthetically active radiation. However, there is increasing evidence that the stomata of some species remain open at night, which would allow for nighttime transpiration if there were a sufficient environmental driving force. We examined nighttime water use in co-occurring species...
متن کاملUpdate on Nighttime Stomatal Conductance in Plants Nighttime Stomatal Conductance and Transpiration in C3 and C4 Plants 1[W]
Incomplete stomatal closure during the night is observed in a diverse range of C3 and C4 species (Fig. 1; Supplemental Table S1) and can lead to substantial nighttime transpirational water loss. Although water loss is an inevitable consequence of stomatal opening for photosynthetic carbon gain, nighttime stomatal opening is unexpected because carbon gain is not occurring and the need to cool le...
متن کاملEffects of stand age and tree species on canopy transpiration and average stomatal conductance of boreal forests
We quantified the effect of stand age and tree species composition on canopy transpiration ( E C ) by analysing transpiration per unit leaf area ( E L ) and canopy stomatal conductance ( G S ) for boreal trees comprising a five stand wildfire chronosequence. A total of 196 sap flux sensors were used on 90 trees consisting of Betula papyrifera Marsh (paper birch; present in the youngest stand), ...
متن کاملTranspiration of a boreal pine forest measured by branch bag,
transpiration of a boreal forest: the branch bag, sap flow and eddy covariance methods. The branch bag method encloses several thousand needles and gives a continuous record of branch transpiration. The sap flow method provides a continuous record of sap velocity and an estimate of tree transpiration. The eddy covariance method typically measures evaporation rates between a forest and the atmos...
متن کاملPhysiological and environmental regulation of stomatal conductance, photosynthesis and transpiration: a model that includes a laminar boundary layer*
Collatz, G.J., Ball, J.T., Grivet, C. and Berry, J.A., 1991. Physiological and environmental regulation of stomatal conductance, photosynthesis and transpiration: a model that includes a laminar boundary layer. Agric. For. Meteorol,, 54: 107-136. This paper presents a system of models for the simulation of gas and energy exchange of a leaf of a C3 plant in free air. The physiological processes ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Biogeosciences
سال: 2017
ISSN: 2169-8953,2169-8961
DOI: 10.1002/2016jg003709