Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ
Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with...
Ausführliche Beschreibung
Autor*in: |
Õunapuu, Eele [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
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2013transfer abstract |
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Umfang: |
7 |
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Übergeordnetes Werk: |
Enthalten in: Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations - Wang, Zhaoyang ELSEVIER, 2021, PPB : an official journal of the Federation of European Societies of Plant Physiology, Amsterdam [u.a.] |
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Übergeordnetes Werk: |
volume:68 ; year:2013 ; pages:104-110 ; extent:7 |
Links: |
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DOI / URN: |
10.1016/j.plaphy.2013.04.011 |
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Katalog-ID: |
ELV017032695 |
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245 | 1 | 0 | |a Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ |
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520 | |a Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. | ||
520 | |a Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. | ||
650 | 7 | |a Evaporative flux method |2 Elsevier | |
650 | 7 | |a Leaf water status |2 Elsevier | |
650 | 7 | |a Circadian regulation |2 Elsevier | |
650 | 7 | |a Environmental factors |2 Elsevier | |
650 | 7 | |a Plant water relations |2 Elsevier | |
650 | 7 | |a Diurnal variation |2 Elsevier | |
650 | 7 | |a Canopy position |2 Elsevier | |
700 | 1 | |a Sellin, Arne |4 oth | |
773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Wang, Zhaoyang ELSEVIER |t Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations |d 2021 |d PPB : an official journal of the Federation of European Societies of Plant Physiology |g Amsterdam [u.a.] |w (DE-627)ELV006529712 |
773 | 1 | 8 | |g volume:68 |g year:2013 |g pages:104-110 |g extent:7 |
856 | 4 | 0 | |u https://doi.org/10.1016/j.plaphy.2013.04.011 |3 Volltext |
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10.1016/j.plaphy.2013.04.011 doi GBVA2013016000020.pica (DE-627)ELV017032695 (ELSEVIER)S0981-9428(13)00146-0 DE-627 ger DE-627 rakwb eng 630 640 580 630 DE-600 640 DE-600 580 DE-600 690 620 VZ 50.03 bkl Õunapuu, Eele verfasserin aut Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ 2013transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Evaporative flux method Elsevier Leaf water status Elsevier Circadian regulation Elsevier Environmental factors Elsevier Plant water relations Elsevier Diurnal variation Elsevier Canopy position Elsevier Sellin, Arne oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:68 year:2013 pages:104-110 extent:7 https://doi.org/10.1016/j.plaphy.2013.04.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 68 2013 104-110 7 045F 630 |
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10.1016/j.plaphy.2013.04.011 doi GBVA2013016000020.pica (DE-627)ELV017032695 (ELSEVIER)S0981-9428(13)00146-0 DE-627 ger DE-627 rakwb eng 630 640 580 630 DE-600 640 DE-600 580 DE-600 690 620 VZ 50.03 bkl Õunapuu, Eele verfasserin aut Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ 2013transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Evaporative flux method Elsevier Leaf water status Elsevier Circadian regulation Elsevier Environmental factors Elsevier Plant water relations Elsevier Diurnal variation Elsevier Canopy position Elsevier Sellin, Arne oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:68 year:2013 pages:104-110 extent:7 https://doi.org/10.1016/j.plaphy.2013.04.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 68 2013 104-110 7 045F 630 |
allfields_unstemmed |
10.1016/j.plaphy.2013.04.011 doi GBVA2013016000020.pica (DE-627)ELV017032695 (ELSEVIER)S0981-9428(13)00146-0 DE-627 ger DE-627 rakwb eng 630 640 580 630 DE-600 640 DE-600 580 DE-600 690 620 VZ 50.03 bkl Õunapuu, Eele verfasserin aut Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ 2013transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Evaporative flux method Elsevier Leaf water status Elsevier Circadian regulation Elsevier Environmental factors Elsevier Plant water relations Elsevier Diurnal variation Elsevier Canopy position Elsevier Sellin, Arne oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:68 year:2013 pages:104-110 extent:7 https://doi.org/10.1016/j.plaphy.2013.04.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 68 2013 104-110 7 045F 630 |
allfieldsGer |
10.1016/j.plaphy.2013.04.011 doi GBVA2013016000020.pica (DE-627)ELV017032695 (ELSEVIER)S0981-9428(13)00146-0 DE-627 ger DE-627 rakwb eng 630 640 580 630 DE-600 640 DE-600 580 DE-600 690 620 VZ 50.03 bkl Õunapuu, Eele verfasserin aut Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ 2013transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Evaporative flux method Elsevier Leaf water status Elsevier Circadian regulation Elsevier Environmental factors Elsevier Plant water relations Elsevier Diurnal variation Elsevier Canopy position Elsevier Sellin, Arne oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:68 year:2013 pages:104-110 extent:7 https://doi.org/10.1016/j.plaphy.2013.04.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 68 2013 104-110 7 045F 630 |
allfieldsSound |
10.1016/j.plaphy.2013.04.011 doi GBVA2013016000020.pica (DE-627)ELV017032695 (ELSEVIER)S0981-9428(13)00146-0 DE-627 ger DE-627 rakwb eng 630 640 580 630 DE-600 640 DE-600 580 DE-600 690 620 VZ 50.03 bkl Õunapuu, Eele verfasserin aut Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ 2013transfer abstract 7 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. Evaporative flux method Elsevier Leaf water status Elsevier Circadian regulation Elsevier Environmental factors Elsevier Plant water relations Elsevier Diurnal variation Elsevier Canopy position Elsevier Sellin, Arne oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:68 year:2013 pages:104-110 extent:7 https://doi.org/10.1016/j.plaphy.2013.04.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 68 2013 104-110 7 045F 630 |
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daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (betula pendula) measured in situ |
title_auth |
Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ |
abstract |
Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. |
abstractGer |
Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. |
abstract_unstemmed |
Daily dynamics of leaf (K L) and soil-to-branch hydraulic conductance (K S–B) was investigated in silver birch (Betula pendula Roth.) using evaporative flux method in situ: water potential drop was measured with a pressure chamber and evaporative flux was estimated as sap flux density measured with sap flow gauges. Canopy position had a significant (P < 0.001) effect on both K L and K S – B. Upper-canopy leaves exhibited 1.7 and soil-to-branch pathway 2.3 times higher hydraulic efficiency than those for lower-canopy. K L varied significantly with time of day: K L for both upper- and lower-canopy leaves was lowest in the morning and rose gradually achieving maximal values in late afternoon (4.75 and 3.38 mmol m−2 s−1 MPa−1, respectively). Relevant environmental factors affecting K L were photosynthetic photon flux density (Q P), air relative humidity (RH) and air temperature (T A). K S – B started rising in the morning and reached maximum in the lower canopy (1.44 mmol m−2 s−1 MPa−1) at 1300 h and in the upper canopy (2.52 mmol m−2 s−1 MPa−1) at 1500 h, decreasing afterwards. Environmental factors controlling K S – B were Ψ S and Q P. The diurnal patterns of K L reflect a combination of environmental factors and endogenous rhythms. The temporal pattern of K S – B refers to daily up- and down-regulation of hydraulic conductance of water transport pathway from soil–root interface to leaves with respect to changing irradiance. |
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Daily dynamics of leaf and soil-to-branch hydraulic conductance in silver birch (Betula pendula) measured in situ |
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