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Atmospheric drivers of storage water use in Scots pine

(2007) BIOGEOSCIENCES DISCUSSIONS. 4(1). p.615-650
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Abstract
In this study we determined the 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 and – storage 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 was the main driver 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, mainly driven by vapour pressure deficit (VPD). During dry atmospheric conditions (high VPD) storage water use was reduced. This reduction was disproportionally 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. A third important factor was the tree water deficit. When storage compartments were depleted beyond a threshold, storage water use was limited due to the low water potential in the storage compartments. The maximum relative contribution of storage water to daily transpiration was also constrained by an increasing tree water deficit.

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MLA
Verbeeck, Hans et al. “Atmospheric Drivers of Storage Water Use in Scots Pine.” BIOGEOSCIENCES DISCUSSIONS 4.1 (2007): 615–650. Print.
APA
Verbeeck, H., Steppe, K., Nadezhdina, N., Op de Beeck, M., Deckmyn, G., Meiresonne, L., Lemeur, R., et al. (2007). Atmospheric drivers of storage water use in Scots pine. BIOGEOSCIENCES DISCUSSIONS, 4(1), 615–650.
Chicago author-date
Verbeeck, Hans, Kathy Steppe, Nadja Nadezhdina, Maarten Op de Beeck, Gaby Deckmyn, Linda Meiresonne, Raoul Lemeur, Jan Cermak, R Ceulemans, and I Janssens. 2007. “Atmospheric Drivers of Storage Water Use in Scots Pine.” Biogeosciences Discussions 4 (1): 615–650.
Chicago author-date (all authors)
Verbeeck, Hans, Kathy Steppe, Nadja Nadezhdina, Maarten Op de Beeck, Gaby Deckmyn, Linda Meiresonne, Raoul Lemeur, Jan Cermak, R Ceulemans, and I Janssens. 2007. “Atmospheric Drivers of Storage Water Use in Scots Pine.” Biogeosciences Discussions 4 (1): 615–650.
Vancouver
1.
Verbeeck H, Steppe K, Nadezhdina N, Op de Beeck M, Deckmyn G, Meiresonne L, et al. Atmospheric drivers of storage water use in Scots pine. BIOGEOSCIENCES DISCUSSIONS. 2007;4(1):615–50.
IEEE
[1]
H. Verbeeck et al., “Atmospheric drivers of storage water use in Scots pine,” BIOGEOSCIENCES DISCUSSIONS, vol. 4, no. 1, pp. 615–650, 2007.
@article{423716,
  abstract     = {In this study we determined the 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 and – storage 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 was the main driver 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, mainly driven by vapour pressure deficit (VPD). During dry atmospheric conditions (high VPD) storage water use was reduced. This reduction was disproportionally 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. 
A third important factor was the tree water deficit. When storage compartments were depleted beyond a threshold, storage water use was limited due to the low water potential in the storage compartments. The maximum relative contribution of storage water to daily transpiration was also constrained by an increasing tree water deficit.},
  author       = {Verbeeck, Hans and Steppe, Kathy and Nadezhdina, Nadja and Op de Beeck, Maarten and Deckmyn, Gaby and Meiresonne, Linda and Lemeur, Raoul and Cermak, Jan and Ceulemans, R and Janssens, I},
  issn         = {1810-6277},
  journal      = {BIOGEOSCIENCES DISCUSSIONS},
  language     = {eng},
  number       = {1},
  pages        = {615--650},
  title        = {Atmospheric drivers of storage water use in Scots pine},
  url          = {http://www.biogeosciences-discuss.net/4/615/2007/},
  volume       = {4},
  year         = {2007},
}