Stored water use and transpiration in Scots pine: a modeling analysis with ANAFORE

Verbeeck, Hans; Steppe, Kathy; Nadezhdina, N.; Beeck, Maarten Op de; Deckmyn, Gaby; Meiresonne, Linda; Lemeur, Raoul; Čermák, Jan; Ceulemans, R.; Janssens, Ivan A.

doi:10.1093/treephys/27.12.1671

Cited by 57 publications

(53 citation statements)

References 75 publications

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“…This response has been previously linked to soil moisture, VPD, and plant physiology Novick et al, 2014;Unsworth et al, 2004;Verbeeck et al, 2007b;Zhang et al, 2014]. Red oaks had the largest mean absolute hysteresis in the treatment plot, the second largest mean absolute hysteresis in the control plot, and the largest mean relative hysteresis in both plots.…”

Section: Red Oakmentioning

confidence: 55%

Species‐specific transpiration responses to intermediate disturbance in a northern hardwood forest

et al. 2014

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Intermediate disturbances shape forest structure and composition, which may in turn alter carbon, nitrogen, and water cycling. We used a large-scale experiment in a forest in northern lower Michigan where we prescribed an intermediate disturbance by stem girdling all canopy-dominant early successional trees to simulate an accelerated age-related senescence associated with natural succession. Using 3 years of eddy covariance and sap flux measurements in the disturbed area and an adjacent control plot, we analyzed disturbance-induced changes to plot level and species-specific transpiration and stomatal conductance. We found transpiration to be~15% lower in disturbed plots than in unmanipulated control plots. However, species-specific responses to changes in microclimate varied. While red oak and white pine showed increases in stomatal conductance during postdisturbance (62.5 and 132.2%, respectively), red maple reduced stomatal conductance by 36.8%. We used the hysteresis between sap flux and vapor pressure deficit to quantify diurnal hydraulic stress incurred by each species in both plots. Red oak, a ring porous anisohydric species, demonstrated the largest mean relative hysteresis, while red maple, bigtooth aspen, and paper birch, all diffuse porous species, had the lowest relative hysteresis. We employed the Penman-Monteith model for LE to demonstrate that these species-specific responses to disturbance are not well captured using current modeling strategies and that accounting for changes to leaf area index and plot microclimate are insufficient to fully describe the effects of disturbance on transpiration.

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Section: Red Oakmentioning

confidence: 55%

Species‐specific transpiration responses to intermediate disturbance in a northern hardwood forest

et al. 2014

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“…To model water fluxes, it integrates a dynamic water flow model in a process based transpiration model as described in a companion paper by Verbeeck et al (2007). Stomatal aperture, sap flow, photosynthesis (Farquhar et al, 1980) and transpiration (Penman, 1948;Monteith, 1965) are simulated on a half-hourly basis.…”

Section: Model Descriptionmentioning

confidence: 99%

“…Several authors found that the contribution of internal water to transpiration is not a constant in the water budget of trees (Loustau et al, 1996;Köstner et al, 1998;Zweifel et al, 2005;Verbeeck et al, 2007), but changes dynamically from day to day. To determine the complete water balance of a forest ecosystem and its dynamics, it is therefore important to know which factors influence the use of stored water.…”

Section: Introductionmentioning

confidence: 99%

“…This has been done by Lhomme et al (2001) using an empirical Jarvis-type stomatal model and a big leaf transpiration model, and by Verbeeck et al (2007) using the process-based ANAFORE model.…”

Section: Introductionmentioning

confidence: 99%

“…This model integrates a water flow and storage submodel in a process-based transpiration model (companion paper: Verbeeck et al, 2007). The goal of this study was to determine the atmospheric drivers of day-to-day and diurnal variation of storage water use.…”

Section: Introductionmentioning

confidence: 99%

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Model analysis of the effects of atmospheric drivers on storage water use in Scots pine

et al. 2007

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Abstract. Storage water use is an indirect consequence of the interplay between different meteorological drivers through their effect on water flow and water potential in trees. We studied these microclimatic drivers of storage water use in Scots pine (Pinus sylvestris L.) growing in a temperate climate. The storage water use was modeled using the ANAFORE model, integrating a dynamic water flow andstorage model with a process-based transpiration model. The model was calibrated and validated with sap flow measurements for the growing season of 2000 (26 May-18 October).Because there was no severe soil drought during the study period, we were able to study atmospheric effects. Incoming radiation and vapour pressure deficit (VPD) were the main atmospheric drivers of storage water use. The general trends of sap flow and storage water use are similar, and follow more or less the pattern of incoming radiation. Nevertheless, considerable differences in the day-to-day pattern of sap flow and storage water use were observed. VPD was determined to be one of the main drivers of these differences. During dry atmospheric conditions (high VPD) storage water use was reduced. This reduction was higher than the reduction in measured sap flow. Our results suggest that the trees did not rely more on storage water during periods of atmospheric drought, without severe soil drought. The daily minimum tree water content was lower in periods of high VPD, but the reserves were not completely depleted after the first day of high VPD, due to refilling during the night.Nevertheless, the tree water content deficit was a third important factor influencing storage water use. When storage compartments were depleted beyond a threshold, storage water use was limited due to the low water potential in the storCorrespondence to: H. Verbeek (hans.verbeeck@ua.ac.be) age compartments. The maximum relative contribution of storage water to daily transpiration was also constrained by an increasing tree water content deficit.

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Characterizing the diurnal patterns of errors in the prediction of evapotranspiration by several land‐surface models: An NACP analysis

et al. 2014

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Land-surface models use different formulations of stomatal conductance and plant hydraulics, and it is unclear which type of model best matches the observed surface-atmosphere water flux. We use the North American Carbon Program data set of latent heat flux (LE) measurements from 25 sites and predictions from 9 models to evaluate models' ability to resolve subdaily dynamics of transpiration. Despite overall good forecast at the seasonal scale, the models have difficulty resolving the dynamics of intradaily hysteresis. The majority of models tend to underestimate LE in the prenoon hours and overestimate in the evening. We hypothesize that this is a result of unresolved afternoon stomatal closure due to hydrodynamic stresses. Although no model or stomata parameterization was consistently best or worst in terms of ability to predict LE, errors in model-simulated LE were consistently largest and most variable when soil moisture was moderate and vapor pressure deficit was moderate to limiting. Nearly all models demonstrate a tendency to underestimate the degree of maximum hysteresis which, across all sites studied, is most pronounced during moisture-limited conditions. These diurnal error patterns are consistent with models' diminished ability to accurately simulate the natural hysteresis of transpiration. We propose that the lack of representation of plant hydrodynamics is, in part, responsible for these error patterns.

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Stored water use and transpiration in Scots pine: a modeling analysis with ANAFORE

Cited by 57 publications

References 75 publications

Species‐specific transpiration responses to intermediate disturbance in a northern hardwood forest

Species‐specific transpiration responses to intermediate disturbance in a northern hardwood forest

Model analysis of the effects of atmospheric drivers on storage water use in Scots pine

Characterizing the diurnal patterns of errors in the prediction of evapotranspiration by several land‐surface models: An NACP analysis

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