Articles | Volume 20, issue 5
Hydrol. Earth Syst. Sci., 20, 2063–2083, 2016
https://doi.org/10.5194/hess-20-2063-2016
Hydrol. Earth Syst. Sci., 20, 2063–2083, 2016
https://doi.org/10.5194/hess-20-2063-2016

Research article 25 May 2016

Research article | 25 May 2016

Dominant controls of transpiration along a hillslope transect inferred from ecohydrological measurements and thermodynamic limits

Maik Renner et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (Editor review) (30 Mar 2016) by Thom Bogaard
AR by Maik Renner on behalf of the Authors (14 Apr 2016)  Author's response    Manuscript
ED: Publish subject to technical corrections (01 May 2016) by Thom Bogaard
AR by Maik Renner on behalf of the Authors (04 May 2016)  Author's response    Manuscript
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Short summary
We estimated forest transpiration (European beech) along a steep valley cross section. Atmospheric demand, obtained by the thermodynamic limit of maximum power, is the dominant control of transpiration at all sites. To our surprise we find that transpiration is rather similar across sites with different aspect (north vs. south) and different stand structure due to systematically varying sap velocities. Such a compensation effect is highly relevant for modeling and upscaling of transpiration.